谷歌案例-yiteyi-C++库

给出一个句子，任务是重写谷歌案例。这是一种书写方式，我们将所有小写字母替换为大写字母，留下所有单词的首字母。

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例如：

Input : gEEks fOr GeeKsOutput : gEEKS fOR gEEKS Input : I got intern at geeksforgeeksOutput : i gOT iNTERN aT gEEKSFORGEEKS

推荐：请尝试你的方法 {IDE} 首先，在进入解决方案之前。

A. 简单解决方案 就是将整个字符串转换成一个大写字母，然后遍历给定的字符串，同时遍历我们将所有单词的首字母替换为小写。

C++

                         // C++ program to convert a                       
                         // sentence to gOOGLE cASE.                       
                         #include <bits/stdc++.h>                       
                         using                                     namespace                                     std;                       
           
                         string convert(string str)                       
                         {                       
                                   
                                                 // Empty strings                       
                                                 string w =                                     ""                                     , z =                                     ""                                     ;                       
           
                                                 // Convert input string to upper case                       
                                                 transform(str.begin(), str.end(),                       
                                                 str.begin(), ::                                     toupper                                     );                       
                                                 str +=                                     " "                                     ;                       
                                                 for                                     (                                     int                                     i = 0; i < str.length(); i++)                       
                                                 {                       
                                   
                                                 // Check if character is not a space                       
                                                 // and adding it to string w                       
                                                 char                                     ch = str[i];                       
                                                 if                                     (ch !=                                     ' '                                     )                       
                                                 {                       
                                                 w = w + ch;                       
                                                 }                       
                                                 else                       
                                                 {                       
                                   
                                                 // Converting first character                       
                                                 // to lower case and subsequent                       
                                                 // initial letter of another                       
                                                 // word to lower case                       
                                                 z = z +                                     char                                     (                                     tolower                                     (w[0])) +                       
                                                 w.substr(1) +                                     " "                                     ;                       
                                                 w =                                     ""                                     ;                       
                                                 }                       
                                                 }                       
                                                 return                                     z;                       
                         }                       
           
                         // Driver code                       
                         int                                     main()                       
                         {                       
                                                 string str =                                     "I got intern at geeksforgeeks"                                     ;                       
                                   
                                                 cout << convert(str) << endl;                       
                                                 return                                     0;                       
                         }                       
           
                         // This code is contributed by rutvik_56                       

JAVA

                         // Java program to convert a                       
                         // sentence to gOOGLE cASE.                       
           
                         class                                     GFG                       
                         {                       
                                                 static                                     String convert(String str)                       
                                                 {                       
                                                 // empty strings                       
                                                 String w =                                     ""                                     , z =                                     ""                                     ;                       
           
                                                 // convert input string to upper case                       
                                                 str = str.toUpperCase() +                                     " "                                     ;                       
           
                                                 for                                     (                                     int                                     i =                                     0                                     ; i < str.length(); i++)                       
                                                 {                       
           
                                                 // checki if character is not a space                       
                                                 // and adding it to string w                       
                                                 char                                     ch = str.charAt(i);                       
                                                 if                                     (ch !=                                     ' '                                     )                       
                                                 w = w + ch;                       
                                                 else                                     {                       
           
                                                 // converting first character to lower                       
                                                 // case and subsequent initial                       
                                                 // letter of another word to lower case                       
                                                 z = z + (Character.toLowerCase(w.charAt(                                     0                                     ))) +                       
                                                 w.substring(                                     1                                     ) +                                     " "                                     ;                       
                                                 w =                                     ""                                     ;                       
                                                 }                       
                                                 }                       
           
                                                 return                                     z;                       
                                                 }                       
                                   
                                                 // Driver code                       
                                                 public                                     static                                     void                                     main(String[] args)                       
                                                 {                       
                                   
                                                 String str =                                     "I got intern at geeksforgeeks"                                     ;                       
                                                 System.out.println(convert(str));                       
                                                 }                       
                         }                       

Python3

                         # Python3 program to convert a                       
                         # sentence to gOOGLE cASE.                       
                         def                                     convert(                                     str                                     ):                       
                                   
                                                 # empty strings                       
                                                 w                                     =                                     ""                       
                                                 z                                     =                                     "";                       
           
                                                 # convert input string                       
                                                 # to upper case                       
                                                 str                                     =                                     str                                     .upper()                                     +                                     " "                                     ;                       
           
                                                 for                                     i                                     in                                     range                                     (                                     len                                     (                                     str                                     )):                       
           
                                                 # checki if character is not                       
                                                 # a space and adding it to                       
                                                 # string w                       
                                                 ch                                     =                                     str                                     [i];                       
                                                 if                                     (ch !                                     =                                     ' '                                     ):                       
                                                 w                                     =                                     w                                     +                                     ch;                       
                                                 else                                     :                       
           
                                                 # converting first character                       
                                                 # to lower case and subsequent                       
                                                 # initial letter of another                       
                                                 # word to lower case                       
                                                 z                                     =                                     (z                                     +                                     (w[                                     0                                     ]).lower()                                     +                       
                                                 w[                                     1                                     :                                     len                                     (w)]                                     +                                     " "                                     );                       
                                                 w                                     =                                     "";                       
           
                                                 return                                     z;                       
           
                         # Driver code                       
                         if                                     __name__                                     =                                     =                                     '__main__'                                     :                       
                                   
                                                 str                                     =                                     "I got intern at geeksforgeeks"                                     ;                       
                                                 print                                     (convert(                                     str                                     ));                       
           
                         # This code is contributed by 29AjayKumar                       

C#

                         // C# program to convert a                       
                         // sentence to gOOGLE cASE.                       
                         using                                     System;                       
           
                         class                                     GFG                       
                         {                       
                                                 static                                     string                                     convert(                                     string                                     str)                       
                                                 {                       
                                                 // empty strings                       
                                                 string                                     w =                                     ""                                     , z =                                     ""                                     ;                       
           
                                                 // convert input string                       
                                                 // to upper case                       
                                                 str = str.ToUpper() +                                     " "                                     ;                       
           
                                                 for                                     (                                     int                                     i = 0;                       
                                                 i < str.Length; i++)                       
                                                 {                       
           
                                                 // checki if character is                       
                                                 // not a space and adding                       
                                                 // it to string w                       
                                                 char                                     ch = str[i];                       
                                                 if                                     (ch !=                                     ' '                                     )                       
                                                 w = w + ch;                       
                                                 else                       
                                                 {                       
           
                                                 // converting first character                       
                                                 // to lower case and subsequent                       
                                                 // initial letter of another                       
                                                 // word to lower case                       
                                                 z = z + (Char.ToLower(w[0])) +                       
                                                 w.Substring(1) +                                     " "                                     ;                       
                                                 w =                                     ""                                     ;                       
                                                 }                       
                                                 }                       
                                                 return                                     z;                       
                                                 }                       
                                   
                                                 // Driver code                       
                                                 static                                     void                                     Main()                       
                                                 {                       
                                                 string                                     str =                                     "I got intern at geeksforgeeks"                                     ;                       
                                                 Console.WriteLine(convert(str));                       
                                                 }                       
                         }                       
           
                         // This code is contributed by                       
                         // Manish Shaw(manishshaw1)                       

PHP

                         <?php                       
                         // PHP program to convert a                       
                         // sentence to gOOGLE cASE.                       
           
                         function                                     convert(                                     $str                                     )                       
                         {                       
                                                 // empty strings                       
                                                 $w                                     =                                     ""                                     ;                                     $z                                     =                                     ""                                     ;                       
           
                                                 // convert input                       
                                                 // to upper case                       
                                                 $str                                     =                                     strtoupper                                     (                                     $str                                     ) .                                     " "                                     ;                       
           
                                                 for                                     (                                     $i                                     = 0;                       
                                                 $i                                     <                                     strlen                                     (                                     $str                                     );                                     $i                                     ++)                       
                                                 {                       
           
                                                 // checki if character                       
                                                 // is not a space                       
                                                 // and adding it to $w                       
                                                 $ch                                     =                                     $str                                     [                                     $i                                     ];                       
                                                 if                                     (                                     $ch                                     !=                                     ' '                                     )                       
                                                 $w                                     =                                     $w                                     .                                     $ch                                     ;                       
                                                 else                       
                                                 {                       
           
                                                 // converting first character                       
                                                 // to lower case and subsequent                       
                                                 // initial letter of another                       
                                                 // word to lower case                       
                                                 $z                                     =                                     $z                                     .                                     strtolower                                     (                                     $w                                     [0]) .                       
                                                 substr                                     (                                     $w                                     , 1) .                                     " "                                     ;                       
                                                 $w                                     =                                     ""                                     ;                       
                                                 }                       
                                                 }                       
                                                 return                                     $z                                     ;                       
                         }                       
           
                         // Driver code                       
                         $str                                     =                                     "I got intern at geeksforgeeks"                                     ;                       
                         echo                                     (convert(                                     $str                                     ));                       
           
                         // This code is contributed by                       
                         // Manish Shaw(manishshaw1)                       
                         ?>                       

Javascript

                         <script>                       
                         // javascript program to convert a                       
                         // sentence to gOOGLE cASE                       
                         function                                     convert( str)                       
                         {                       
           
                                                 // empty strings                       
                                                 var                                     w =                                     ""                                     , z =                                     ""                                     ;                       
           
                                                 // convert input string to upper case                       
                                                 str = str.toUpperCase() +                                     " "                                     ;                       
           
                                                 for                                     (i = 0; i < str.length; i++) {                       
           
                                                 // checki if character is not a space                       
                                                 // and adding it to string w                       
                                                 var                                     ch = str[i];                       
                                                 if                                     (ch !=                                     ' '                                     )                       
                                                 w = w + ch;                       
                                                 else                                     {                       
           
                                                 // converting first character to lower                       
                                                 // case and subsequent initial                       
                                                 // letter of another word to lower case                       
                                                 z = z + (w[0].toLowerCase()) + w.substring(1) +                                     " "                                     ;                       
                                                 w =                                     ""                                     ;                       
                                                 }                       
                                                 }                       
           
                                                 return                                     z;                       
                                                 }                       
           
                                                 // Driver code                       
                                                 var                                     str =                                     "I got intern at geeksforgeeks"                                     ;                       
                                                 document.write(convert(str));                       
           
                         // This code is contributed by todaysgaurav                       
                         </script>                       

输出：

i gOT iNTERN aT gEEKSFORGEEKS

上述解决方案需要两次字符串遍历。一 有效解决方案 是在一次遍历中完成的。这样做的目的是跟踪空间。在每个空格后，将字符打印到下方，否则打印到上方。

C++

                         // CPP program to convert given                       
                         // sentence to camel case.                       
                         #include <bits/stdc++.h>                       
                         using                                     namespace                                     std;                       
           
                         // Function to remove spaces and                       
                         // convert into camel case                       
                         string convert(string s)                       
                         {                       
                                                 int                                     n = s.length();                       
                                                 s[0] =                                     tolower                                     (s[0]);                       
           
                                                 for                                     (                                     int                                     i = 1; i < n; i++)                       
                                                 {                       
           
                                                 // check for spaces in the sentence                       
                                                 if                                     (s[i] ==                                     ' '                                     && i < n)                       
                                                 {                       
           
                                                 // conversion into upper case                       
                                                 s[i + 1] =                                     tolower                                     (s[i + 1]);                       
                                                 i++;                       
                                                 }                       
           
                                                 // If not space, copy character                       
                                                 else                       
                                                 s[i] =                                     toupper                                     (s[i]);                       
                                                 }                       
           
                                                 // return string to main                       
                                                 return                                     s;                       
                         }                       
           
                         // Driver Code                       
                         int                                     main()                       
                         {                       
                                                 string str =                                     "I get intern at geeksforgeeks"                                     ;                       
                                                 cout << convert(str);                       
                                                 return                                     0;                       
                         }                       

JAVA

                         // Java program to convert given                       
                         // sentence to camel case.                       
                         import                                     java.io.*;                       
           
                         class                                     GFG                       
                         {                       
                                                 // Function to remove spaces                       
                                                 // and convert into camel case                       
                                                 static                                     String convert(String s)                       
                                                 {                       
                                                 int                                     n = s.length();                       
                                                 String s1 =                                     ""                                     ;                       
                                                 s1 = s1 + Character.toLowerCase(s.charAt(                                     0                                     ));                       
           
                                                 for                                     (                                     int                                     i =                                     1                                     ; i < n; i++)                       
                                                 {                       
                                                 // check for spaces in the sentence                       
                                                 if                                     (s.charAt(i) ==                                     ' '                                     && i < n)                       
                                                 {                       
                                                 // conversion into upper case                       
                                                 s1 = s1 +                                     " "                                     + Character.toLowerCase                       
                                                 (s.charAt(i +                                     1                                     ));                       
                                                 i++;                       
                                   
                                                 }                       
                                   
                                                 // If not space, copy character                       
                                                 else                       
                                                 s1= s1 + Character.toUpperCase(s.charAt(i));                       
                                   
                                                 }                       
           
                                                 // return string to main                       
                                                 return                                     s1;                       
                                   
                                                 }                       
                                   
                                                 // Driver code                       
                                                 public                                     static                                     void                                     main (String[] args)                       
                                                 {                       
                                                 String str =                                     "I get intern at geeksforgeeks"                                     ;                       
                                                 System.out.println(convert(str));                       
                                                 }                       
                         }                       
           
                         // This code is contributed by Gitanjali.                       

Python3

                         # Python program to convert given                       
                         # sentence to camel case.                       
                         import                                     math                       
           
                         # Function to remove spaces                       
                         # and convert into camel case                       
                         def                                     convert( s):                       
           
                                                 n                                     =                                     len                                     (s)                       
                                                 s1                                     =                                     ""                       
                                                 s1                                     =                                     s1                                     +                                     s[                                     0                                     ].lower()                       
                                                 i                                     =                                     1                       
                                                 while                                     i < n:                       
                                                 # check for spaces in the sentence                       
                                                 if                                     (s[i]                                     =                                     =                                     ' '                                     and                                     i <                                     =                                     n):                       
                                   
                                                 # conversion into upper case                       
                                                 s1                                     =                                     s1                                     +                                     " "                                     +                                     (s[i                                     +                                     1                                     ]).lower()                       
                                                 i                                     =                                     i                                     +                                     1                       
                                   
                                                 # If not space, copy character                       
                                                 else                                     :                       
                                                 s1                                     =                                     s1                                     +                                     (s[i]).upper()                       
                                   
                                                 # increase index of string by s1                       
                                                 i                                     =                                     i                                     +                                     1                       
                                   
                                                 # return string to main                       
                                                 return                                     s1                       
                                   
                         # Driver code                       
                         str                                     =                                     "I get intern at geeksforgeeks"                       
                         print                                     (convert(                                     str                                     ))                       
           
                         # This code is contributed by Gitanjali.                       

C#

                         // C# program to convert given                       
                         // sentence to camel case.                       
                         using                                     System;                       
           
                         class                                     GFG                       
                         {                       
                                                 // Function to remove spaces                       
                                                 // and convert into camel case                       
                                                 static                                     String convert(String s)                       
                                                 {                       
                                                 int                                     n = s.Length;                       
                                                 String s1 =                                     ""                                     ;                       
                                                 s1 = s1 + Char.ToLower(s[0]);                       
           
                                                 for                                     (                                     int                                     i = 1; i < n; i++)                       
                                                 {                       
                                                 // check for spaces in the sentence                       
                                                 if                                     (s[i] ==                                     ' '                                     && i < n)                       
                                                 {                       
                                                 // conversion into upper case                       
                                                 s1 = s1 +                                     " "                                     + Char.ToLower                       
                                                 (s[i + 1]);                       
                                                 i++;                       
                                   
                                                 }                       
                                   
                                                 // If not space, copy character                       
                                                 else                       
                                                 s1= s1 + Char.ToUpper(s[i]);                       
                                   
                                                 }                       
           
                                                 // return string to main                       
                                                 return                                     s1;                       
                                   
                                                 }                       
                                   
                                                 // Driver code                       
                                                 public                                     static                                     void                                     Main ()                       
                                                 {                       
                                                 String str =                                     "I get intern at geeksforgeeks"                                     ;                       
                                                 Console.Write(convert(str));                       
                                                 }                       
                         }                       
           
                         // This code is contributed by nitin mittal                       

PHP

                         <?php                       
                         // PHP program to convert given                       
                         // sentence to camel case.                       
           
                         // Function to remove spaces and                       
                         // convert into camel case                       
                         function                                     convert(                                     $s                                     )                       
                         {                       
                                                 $n                                     =                                     strlen                                     (                                     $s                                     );                       
                                                 $s                                     [0] =                                     strtolower                                     (                                     $s                                     [0]);                       
           
                                                 for                                     (                                     $i                                     = 1;                                     $i                                     <                                     $n                                     ;                                     $i                                     ++)                       
                                                 {                       
           
                                                 // check for spaces                       
                                                 // in the sentence                       
                                                 if                                     (                                     $s                                     [                                     $i                                     ] ==                                     ' '                                     &&                                     $i                                     <                                     $n                                     )                       
                                                 {                       
           
                                                 // conversion into                       
                                                 // upper case                       
                                                 $s                                     [                                     $i                                     + 1] =                                     strtolower                                     (                                     $s                                     [                                     $i                                     + 1]);                       
                                                 $i                                     ++;                       
                                                 }                       
           
                                                 // If not space,                       
                                                 // copy character                       
                                                 else                       
                                                 $s                                     [                                     $i                                     ] =                                     strtoupper                                     (                                     $s                                     [                                     $i                                     ]);                       
                                                 }                       
                                   
                                                 // return string to main                       
                                                 return                                     $s                                     ;                       
                         }                       
           
                         // Driver Code                       
                         $str                                     =                                     "I get intern at geeksforgeeks"                                     ;                       
                         echo                                     (convert(                                     $str                                     ));                       
           
                         // This code is contributed by                       
                         // Manish Shaw(manishshaw1)                       
                         ?>                       

Javascript

                         <script>                       
           
                         // javascript program to convert given                       
                         // sentence to camel case.                       
           
                                                 // Function to remove spaces                       
                                                 // and convert into camel case                       
                                                 function                                     convert( s) {                       
                                                 var                                     n = s.length;                       
                                                 var                                     s1 =                                     ""                                     ;                       
                                                 s1 = s1 + s.charAt(0).toLowerCase();                       
           
                                                 for                                     (i = 1; i < n; i++) {                       
                                                 // check for spaces in the sentence                       
                                                 if                                     (s.charAt(i) ==                                     ' '                                     && i < n) {                       
                                                 // conversion into upper case                       
                                                 s1 = s1 +                                     " "                                     + s.charAt(i+1).toLowerCase();                       
                                                 i++;                       
           
                                                 }                       
           
                                                 // If not space, copy character                       
                                                 else                       
                                                 s1 = s1 + s.charAt(i).toUpperCase();                       
           
                                                 }                       
           
                                                 // return string to main                       
                                                 return                                     s1;                       
           
                                                 }                       
           
                                                 // Driver code                       
                                   
                                                 var                                     str =                                     "I get intern at geeksforgeeks"                                     ;                       
                                                 document.write(convert(str));                       
           
                         // This code is contributed by aashish1995                       
           
                         </script>                       

输出：

i gET iNTERN aT gEEKSFORGEEKS

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