打印梯形图案的程序-yiteyi-C++库

给定表示行数的“num”。这项任务是打印一个梯形图案的num行。 例如：

null

Input  : 4 Output :1*2*3*4*17*18*19*20  5*6*7*14*15*16    8*9*12*13      10*11Input : 2Output :1*2*5*6  3*4

算法：第一步。读取指示行数的num。第二步。我们将图案分为两部分，即左半部和右半部。例：当num=2时 LHS- 1*2* 3* RHS- 5*6 4. 第三步。结合LHS和RHS，我们得到了完整的模式。

C++

                         // CPP program to print Trapezium Pattern                       
                         #include <iostream>                       
           
                         using                                     namespace                                     std;                       
           
                         int                                     main()                       
                         {                       
           
                                                 int                                     num = 3;                       
                                                 int                                     space;                       
           
                                                 int                                     i, j, lterm, rterm;                       
           
                                                 // The terms on the LHS of the pattern                       
                                                 lterm = 1;                       
           
                                                 // The terms on the RHS of the pattern                       
                                                 rterm = num * num + 1;                       
           
                                                 for                                     (i = num; i > 0; i--) {                       
           
                                                 // To print number of spaces                       
                                                 for                                     (space = num; space > i; space--)                       
                                                 cout <<                                     " "                                     ;                       
           
                                                 for                                     (j = 1; j <= i; j++) {                       
                                                 cout << lterm;                       
                                                 cout <<                                     "*"                                     ;                       
                                                 lterm++;                       
                                                 }                       
                                                 for                                     (j = 1; j <= i; j++) {                       
                                                 cout << rterm;                       
                                                 if                                     (j < i)                       
                                                 printf                                     (                                     "*"                                     );                       
                                                 rterm++;                       
                                                 }                       
           
                                                 // To get the next term on RHS of the Pattern                       
                                                 rterm = rterm - (i - 1) * 2 - 1;                       
                                                 cout << endl;                       
                                                 }                       
                         }                       

JAVA

                         // Java program to print Trapezium Pattern                       
                         public                                     class                                     HelloWorld {                       
           
                                                 public                                     static                                     void                                     trapeziumPattern(                                     int                                     num)                       
                                                 {                       
           
                                                 int                                     firsthalf =                                     1                                     ;                       
                                                 int                                     secondhalf = (num * num) +                                     1                                     ;                       
                                                 int                                     numOfSpaces =                                     0                                     ;                       
           
                                                 // numOfLines is the line number                       
                                                 for                                     (                                     int                                     numOfLines = num; numOfLines >=                                     1                                     ;                       
                                                 numOfLines--) {                       
           
                                                 // Prints the spaces for each line                       
                                                 for                                     (                                     int                                     numOfSpacesCounter = numOfSpaces;                       
                                                 numOfSpacesCounter >=                                     1                                     ;                       
                                                 numOfSpacesCounter--) {                       
                                                 System.out.print(                                     " "                                     );                       
                                                 }                       
           
                                                 // Prints the first half of the trapezium                       
                                                 for                                     (                                     int                                     firstHalfCounter =                                     1                                     ;                       
                                                 firstHalfCounter <= numOfLines;                       
                                                 firstHalfCounter++) {                       
           
                                                 // If it is the last number for a line then                       
                                                 // we don't print '*'                       
                                                 if                                     (firstHalfCounter == numOfLines)                       
                                                 System.out.print((firsthalf++));                       
           
                                                 else                       
                                                 System.out.print((firsthalf++) +                                     "*"                                     );                       
                                                 }                       
           
                                                 // Prints the second half of the trapezium                       
                                                 for                                     (                                     int                                     secondHalfCounter =                                     1                                     ;                       
                                                 secondHalfCounter <= numOfLines;                       
                                                 secondHalfCounter++) {                       
                                                 System.out.print(                                     "*"                                     + (secondhalf++));                       
                                                 }                       
           
                                                 System.out.println();                       
           
                                                 // Calculates the number of Spaces for the next                       
                                                 // line                       
                                                 numOfSpaces +=                                     2                                     ;                       
           
                                                 // Calculates the first number of the                       
                                                 // second half for the next iteration/line                       
                                                 secondhalf                       
                                                 = (secondhalf -                                     1                                     ) - ((numOfLines -                                     1                                     ) *                                     2                                     );                       
                                                 }                       
                                                 }                       
           
                                                 public                                     static                                     void                                     main(String[] args)                       
                                                 {                       
                                                 trapeziumPattern(                       
                                                 4                                     );                                     // Passing the integer as the argument to                       
                                                 // print trapezium pattern                       
                                                 }                       
                         }                       

Python 3

                         # Python 3 program to print                       
                         # Trapezium Pattern                       
                                   
                         if                                     __name__                                     =                                     =                                     "__main__"                                     :                       
                                                 num                                     =                                     3                       
                                   
                                                 # The terms on the LHS                       
                                                 # of the pattern                       
                                                 lterm                                     =                                     1                       
                                   
                                                 # The terms on the RHS                       
                                                 # of the pattern                       
                                                 rterm                                     =                                     num                                     *                                     num                                     +                                     1                       
                                   
                                                 for                                     i                                     in                                     range                                     (num,                                     -                                     1                                     ,                                     -                                     1                                     ):                       
                                   
                                                 # To print number of spaces                       
                                                 for                                     space                                     in                                     range                                     (num, i                                     -                                     1                                     ,                                     -                                     1                                     ):                       
                                                 print                                     (                                     " "                                     , end                                     =                                     "")                       
                                   
                                                 for                                     j                                     in                                     range                                     (                                     1                                     , i                                     +                                     1                                     ):                       
                                                 print                                     (                                     str                                     (lterm)                                     +                                     "*"                                     , end                                     =                                     "")                       
                                                 lterm                                     +                                     =                                     1                       
           
                                                 for                                     j                                     in                                     range                                     (                                     1                                     , i                                     +                                     1                                     ):                       
                                                 print                                     (rterm, end                                     =                                     "")                       
                                                 if                                     j < i:                       
                                                 print                                     (                                     "*"                                     , end                                     =                                     "")                       
                                                 rterm                                     +                                     =                                     1                       
                                   
                                                 # To get the next term on RHS of the Pattern                       
                                                 rterm                                     =                                     rterm                                     -                                     (i                                     -                                     1                                     )                                     *                                     2                                     -                                     1                       
                                                 print                                     ()                       
           
                         # This code is contributed by ChitraNayal                       

C#

                         // C# program to print Trapezium Pattern                       
                         using                                     System;                       
           
                         public                                     class                                     HelloWorld {                       
           
                                                 public                                     static                                     void                                     Main(String[] args)                       
                                                 {                       
           
                                                 // Scanner scn = new Scanner(System.in);                       
                                                 int                                     num = 3;                       
                                                 int                                     space;                       
                                                 // System.out.println("Enter number of lines : ");                       
                                                 // num = scn.nextInt();                       
           
                                                 int                                     i, j, lterm, rterm;                       
           
                                                 lterm = 1;                                     // The terms on the LHS of the pattern                       
           
                                                 // The terms on the RHS of the pattern                       
                                                 rterm = num * num + 1;                       
           
                                                 for                                     (i = num; i > 0; i--) {                       
           
                                                 // To print number of spaces                       
                                                 for                                     (space = num; space > i; space--)                       
                                                 Console.Write(                                     " "                                     );                       
           
                                                 for                                     (j = 1; j <= i; j++) {                       
                                                 Console.Write(lterm);                       
                                                 Console.Write(                                     "*"                                     );                       
                                                 lterm++;                       
                                                 }                       
                                                 for                                     (j = 1; j <= i; j++) {                       
                                                 Console.Write(rterm);                       
                                                 if                                     (j < i)                       
                                                 Console.Write(                                     "*"                                     );                       
                                                 rterm++;                       
                                                 }                       
           
                                                 // To get the next term on RHS of the Pattern                       
                                                 rterm = rterm - (i - 1) * 2 - 1;                       
                                                 Console.WriteLine();                       
                                                 }                       
                                                 }                       
                         }                       
           
                         // This code is contributed by ankita_saini                       

PHP

                         <?php                       
                         // PHP program to print                       
                         // Trapezium Pattern                       
                         $num                                     = 3;                       
                         $space                                     ;                       
           
                         $i                                     ;                                     $j                                     ;                                     $lterm                                     ;                                     $rterm                                     ;                       
           
                         // The terms on the LHS                       
                         // of the pattern                       
                         $lterm                                     = 1;                       
           
                         // The terms on the                       
                         // RHS of the pattern                       
                         $rterm                                     =                                     $num                                     *                                     $num                                     + 1;                       
           
                         for                                     (                                     $i                                     =                                     $num                                     ;                                     $i                                     > 0;                                     $i                                     --)                       
                         {                       
           
                                                 // To print number of spaces                       
                                                 for                                     (                                     $space                                     =                                     $num                                     ;                       
                                                 $space                                     >                                     $i                                     ;                                     $space                                     --)                       
                                                 echo                                     " "                                     ;                       
           
                                                 for                                     (                                     $j                                     = 1;                                     $j                                     <=                                     $i                                     ;                                     $j                                     ++)                       
                                                 {                       
                                                 echo                                     $lterm                                     ;                       
                                                 echo                                     "*"                                     ;                       
                                                 $lterm                                     ++;                       
                                                 }                       
                                                 for                                     (                                     $j                                     = 1;                                     $j                                     <=                                     $i                                     ;                                     $j                                     ++)                       
                                                 {                       
                                                 echo                                     $rterm                                     ;                       
                                                 if                                     (                                     $j                                     <                                     $i                                     )                       
                                                 echo                                     "*"                                     ;                       
                                                 $rterm                                     ++;                       
                                                 }                       
           
                                                 // To get the next term                       
                                                 // on RHS of the Pattern                       
                                                 $rterm                                     =                                     $rterm                                     - (                                     $i                                     - 1) * 2 - 1;                       
                                                 echo                                     ""                                     ;                       
                         }                       
           
                         // This code is contributed                       
                         // by Akanksha Rai(Abby_akku)                       
                         ?>                       

Javascript

                         <script>                       
           
                                                 // JavaScript program to print Trapezium Pattern                       
                                                 var                                     num = 3;                       
                                                 var                                     space;                       
           
                                                 var                                     i, j, lterm, rterm;                       
           
                                                 // The terms on the LHS of the pattern                       
                                                 lterm = 1;                       
           
                                                 // The terms on the RHS of the pattern                       
                                                 rterm = num * num + 1;                       
           
                                                 for                                     (i = num; i > 0; i--) {                       
                                                 // To print number of spaces                       
                                                 for                                     (space = num; space > i; space--)                       
                                                 document.write(                                     "  "                                     );                       
           
                                                 for                                     (j = 1; j <= i; j++) {                       
                                                 document.write(lterm);                       
                                                 document.write(                                     "*"                                     );                       
                                                 lterm++;                       
                                                 }                       
                                                 for                                     (j = 1; j <= i; j++) {                       
                                                 document.write(rterm);                       
                                                 if                                     (j < i) document.write(                                     "*"                                     );                       
                                                 rterm++;                       
                                                 }                       
           
                                                 // To get the next term on RHS of the Pattern                       
                                                 rterm = rterm - (i - 1) * 2 - 1;                       
                                                 document.write(                                     "<br>"                                     );                       
                                                 }                       
                                   
                         </script>                       

输出：

Enter number of lines : 31*2*3*10*11*12  4*5*8*9    6*7

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