钟形玻璃图案-yiteyi-C++库

给定正整数n，以沙漏的形式打印数字图案。 例如：

null

Input : rows_no = 7Output :1 2 3 4 5 6 7 2 3 4 5 6 7  3 4 5 6 7   4 5 6 7    5 6 7     6 7       7     6 7    5 6 7   4 5 6 7  3 4 5 6 7 2 3 4 5 6 71 2 3 4 5 6 7

推荐：请尝试你的方法 {IDE} 首先，在进入解决方案之前。

C++

                         // CPP code for hour glass                       
                         // pattern.                       
                         #include <iostream>                       
                         using                                     namespace                                     std;                       
           
                         // Function definition                       
                         void                                     pattern(                                     int                                     rows_no)                       
                         {                       
                                                 int                                     i, j, k;                       
           
                                                 // for loop for printing                       
                                                 // upper half                       
                                                 for                                     (i = 1; i <= rows_no; i++) {                       
           
                                                 // printing i spaces at                       
                                                 // the beginning of each row                       
                                                 for                                     (k = 1; k < i; k++)                       
                                                 cout <<                                     " "                                     ;                       
                                   
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (j = i; j <= rows_no; j++)                       
                                                 cout << j <<                                     " "                                     ;                       
           
                                                 cout << endl;                       
                                                 }                       
           
                                                 // for loop for printing lower half                       
                                                 for                                     (i = rows_no - 1; i >= 1; i--) {                       
           
                                                 // printing i spaces at the                       
                                                 // beginning of each row                       
                                                 for                                     (k = 1; k < i; k++)                       
                                                 cout <<                                     " "                                     ;                       
                                   
           
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (j = i; j <= rows_no; j++)                       
                                                 cout << j <<                                     " "                                     ;                       
           
                                                 cout << endl;                       
                                                 }                       
                         }                       
           
                         // Driver code                       
                         int                                     main()                       
                         {                       
                                                 // taking rows value from the user                       
                                                 int                                     rows_no = 7;                       
           
                                                 pattern(rows_no);                       
                                                 return                                     0;                       
                         }                       

JAVA

                         // Java code for hour glass                       
                         // pattern.                       
                         import                                     java.io.*;                       
           
                         class                                     GFG                       
                         {                       
                                                 // Function definition                       
                                                 static                                     void                                     pattern(                                     int                                     rows_no)                       
                                                 {                       
                                                 int                                     i, j, k;                       
                                   
                                                 // for loop for printing                       
                                                 // upper half                       
                                                 for                                     (i =                                     1                                     ; i <= rows_no; i++) {                       
                                   
                                                 // printing i spaces at                       
                                                 // the beginning of each row                       
                                                 for                                     (k =                                     1                                     ; k < i; k++)                       
                                                 System.out.print(                                     " "                                     );                       
                                   
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (j = i; j <= rows_no; j++)                       
                                                 System.out.print(j +                                     " "                                     );                       
                                   
                                                 System.out.println();                       
                                                 }                       
                                   
                                                 // for loop for printing lower half                       
                                                 for                                     (i = rows_no -                                     1                                     ; i >=                                     1                                     ; i--)                       
                                                 {                       
                                                 // printing i spaces at the                       
                                                 // beginning of each row                       
                                                 for                                     (k =                                     1                                     ; k < i; k++)                       
                                                 System.out.print(                                     " "                                     );                       
                                   
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (j = i; j <= rows_no; j++)                       
                                                 System.out.print(j +                                     " "                                     );                       
                                   
                                                 System.out.println();                       
                                                 }                       
                                                 }                       
                                   
                                                 // Driver code                       
                                                 public                                     static                                     void                                     main (String[] args)                       
                                                 {                       
                                                 // taking rows value from the user                       
                                                 int                                     rows_no =                                     7                                     ;                       
                                   
                                                 pattern(rows_no);                       
                                   
                                                 }                       
                         }                       
           
                         // This code is contributed by vt_m.                       

Python3

                         # Python3 code for hour glass pattern                       
           
                         # Function definition                       
                         def                                     pattern(rows_no):                       
           
                                                 # for loop for printing upper half                       
                                                 for                                     i                                     in                                     range                                     (                                     1                                     , rows_no                                     +                                     1                                     ):                       
           
                                                 # printing i spaces at the                       
                                                 # beginning of each row                       
                                                 for                                     k                                     in                                     range                                     (                                     1                                     , i):                       
                                                 print                                     (                                     " "                                     , end                                     =                                     "")                       
                                   
                                                 # printing i to rows value                       
                                                 # at the end of each row                       
                                                 for                                     j                                     in                                     range                                     (i, rows_no                                     +                                     1                                     ):                       
                                                 print                                     (j, end                                     =                                     " "                                     )                       
           
                                                 print                                     ()                       
                                   
                                                 # for loop for printing lower half                       
                                                 for                                     i                                     in                                     range                                     (rows_no                                     -                                     1                                     ,                                     0                                     ,                                     -                                     1                                     ):                       
           
                                                 # printing i spaces at the                       
                                                 # beginning of each row                       
                                                 for                                     k                                     in                                     range                                     (                                     1                                     , i):                       
                                                 print                                     (                                     " "                                     , end                                     =                                     "")                       
                                   
                                                 # printing i to rows value                       
                                                 # at the end of each row                       
                                                 for                                     j                                     in                                     range                                     (i, rows_no                                     +                                     1                                     ):                       
                                                 print                                     (j, end                                     =                                     " "                                     )                       
           
                                                 print                                     ()                       
                                   
                         # Driver code                       
           
                         # taking rows value from the user                       
                         rows_no                                     =                                     7                       
           
                         pattern(rows_no)                       
           
                         # This code is contributed                       
                         # by ihritik                       

C#

                         // C# code for hour glass                       
                         // pattern.                       
                         using                                     System;                       
                         class                                     GFG                       
                         {                       
                                                 // Function definition                       
                                                 static                                     void                                     pattern(                                     int                                     rows_no)                       
                                                 {                       
                                                 int                                     i, j, k;                       
                                   
                                                 // for loop for printing                       
                                                 // upper half                       
                                                 for                                     (i = 1; i <= rows_no; i++) {                       
                                   
                                                 // printing i spaces at                       
                                                 // the beginning of each row                       
                                                 for                                     (k = 1; k < i; k++)                       
                                                 Console.Write(                                     " "                                     );                       
                                   
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (j = i; j <= rows_no; j++)                       
                                                 Console.Write(j +                                     " "                                     );                       
                                   
                                                 Console.WriteLine();                       
                                                 }                       
                                   
                                                 // for loop for printing lower half                       
                                                 for                                     (i = rows_no - 1; i >= 1; i--)                       
                                                 {                       
                                                 // printing i spaces at the                       
                                                 // beginning of each row                       
                                                 for                                     (k = 1; k < i; k++)                       
                                                 Console.Write(                                     " "                                     );                       
                                   
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (j = i; j <= rows_no; j++)                       
                                                 Console.Write(j +                                     " "                                     );                       
                                   
                                                 Console.WriteLine();                       
                                                 }                       
                                                 }                       
                                   
                                                 // Driver code                       
                                                 public                                     static                                     void                                     Main ()                       
                                                 {                       
                                                 // taking rows value from the user                       
                                                 int                                     rows_no = 7;                       
                                   
                                                 pattern(rows_no);                       
                                   
                                                 }                       
                         }                       
           
                         // This code is contributed by vt_m.                       

PHP

                         <?php                       
                         // PHP code for hour glass pattern                       
                         // Function definition                       
                         function                                     pattern(                                     $rows_no                                     )                       
                         {                       
                                                 // for loop for printing                       
                                                 // upper half                       
                                                 for                                     (                                     $i                                     = 1;                                     $i                                     <=                                     $rows_no                                     ;                                     $i                                     ++)                       
                                                 {                       
           
                                                 // printing i spaces at                       
                                                 // the beginning of each row                       
                                                 for                                     (                                     $k                                     = 1;                                     $k                                     <                                     $i                                     ;                                     $k                                     ++)                       
                                                 echo                                     " "                                     ;                       
                                   
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (                                     $j                                     =                                     $i                                     ;                                     $j                                     <=                                     $rows_no                                     ;                                     $j                                     ++)                       
                                                 echo                                     $j                                     .                                     " "                                     ;                       
           
                                                 echo                                     ""                                     ;                       
                                                 }                       
           
                                                 // for loop for printing lower half                       
                                                 for                                     (                                     $i                                     =                                     $rows_no                                     - 1;                                     $i                                     >= 1;                                     $i                                     --)                       
                                                 {                       
           
                                                 // printing i spaces at the                       
                                                 // beginning of each row                       
                                                 for                                     (                                     $k                                     = 1;                                     $k                                     <                                     $i                                     ;                                     $k                                     ++)                       
                                                 echo                                     " "                                     ;                       
                                   
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (                                     $j                                     =                                     $i                                     ;                                     $j                                     <=                                     $rows_no                                     ;                                     $j                                     ++)                       
                                                 echo                                     $j                                     .                                     " "                                     ;                       
           
                                                 echo                                     ""                                     ;                       
                                                 }                       
                         }                       
           
                         // Driver code                       
                         $rows_no                                     = 7;                       
                         pattern(                                     $rows_no                                     );                       
           
                         // This code is contributed by mits                       
                         ?>                       

Javascript

                         <script>                       
                         // Javascript code for hour glass                       
                         // pattern.                       
           
                                                 // Function definition                       
                                                 function                                     pattern( rows_no)                       
                                                 {                       
                                                 let i, j, k;                       
           
                                                 // for loop for printing                       
                                                 // upper half                       
                                                 for                                     (i = 1; i <= rows_no; i++)                       
                                                 {                       
           
                                                 // printing i spaces at                       
                                                 // the beginning of each row                       
                                                 for                                     (k = 1; k < i; k++)                       
                                                 document.write(                                     " "                                     );                       
           
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (j = i; j <= rows_no; j++)                       
                                                 document.write(j +                                     " "                                     );                       
           
                                                 document.write(                                     "<br/>"                                     );                       
                                                 }                       
           
                                                 // for loop for printing lower half                       
                                                 for                                     (i = rows_no - 1; i >= 1; i--)                       
                                                 {                       
                                   
                                                 // printing i spaces at the                       
                                                 // beginning of each row                       
                                                 for                                     (k = 1; k < i; k++)                       
                                                 document.write(                                     " "                                     );                       
           
                                                 // printing i to rows value                       
                                                 // at the end of each row                       
                                                 for                                     (j = i; j <= rows_no; j++)                       
                                                 document.write(j +                                     " "                                     );                       
           
                                                 document.write(                                     "<br/>"                                     );                       
                                                 }                       
                                                 }                       
           
                                                 // Driver code                       
                                   
                                                 // taking rows value from the user                       
                                                 let rows_no = 7;                       
                                                 pattern(rows_no);                       
           
                         // This code is contributed by gauravrajput1                       
                         </script>                       

输出：

1 2 3 4 5 6 7 2 3 4 5 6 7  3 4 5 6 7   4 5 6 7    5 6 7     6 7       7     6 7    5 6 7   4 5 6 7  3 4 5 6 7 2 3 4 5 6 71 2 3 4 5 6 7

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