打印空心金字塔和菱形图案的程序-yiteyi-C++库

先决条件： 循环 , If-Else语句 1.空心金字塔/三角形图案 这个图案类似于金字塔图案。唯一的区别是，我们将用空格字符替换所有内部“#”字符，并在最后一行中使用2*N-1（N=模式中的行数）“#”字符。 例如：

null

Input rows: 6Output:     #    # #   #   #  #     # #       ##         ############

C++

                         // CPP program to print a hollow pyramid pattern                       
                         #include <iostream>                       
                         using                                     namespace                                     std;                       
                         void                                     printPattern(                                     int                                     );                       
                         int                                     main()                       
                         {                       
                                                 int                                     n = 6;                       
           
                                                 printPattern(n);                       
                         }                       
                         void                                     printPattern(                                     int                                     n)                       
                         {                       
                                                 int                                     i, j, k = 0;                       
                                                 for                                     (i = 1; i <= n; i++)                                     // row=6                       
                                                 {                       
                                                 // Print spaces                       
                                                 for                                     (j = i; j < n; j++) {                       
                                                 cout <<                                     " "                                     ;                       
                                                 }                       
                                                 // Print #                       
                                                 while                                     (k != (2 * i - 1)) {                       
                                                 if                                     (k == 0 || k == 2 * i - 2)                       
                                                 cout <<                                     "#"                                     ;                       
                                                 else                       
                                                 cout <<                                     " "                                     ;                       
                                                 k++;                       
                                                 ;                       
                                                 }                       
                                                 k = 0;                       
                                                 cout << endl;                                     // print next row                       
                                                 }                       
                                                 // print last row                       
                                                 for                                     (i = 0; i < 2 * n - 1; i++) {                       
                                                 cout <<                                     "#"                                     ;                       
                                                 }                       
                         }                       

JAVA

                         // JAVA program to print a hollow                       
                         // pyramid pattern                       
                         class                                     GFG{                       
                                   
                                                 public                                     static                                     void                                     main(String args[])                       
                                                 {                       
                                                 int                                     n =                                     6                                     ;                       
                                   
                                                 printPattern(n);                       
                                                 }                       
                                   
                                                 static                                     void                                     printPattern(                                     int                                     n)                       
                                                 {                       
                                                 int                                     i, j, k =                                     0                                     ;                       
                                                 for                                     (i =                                     1                                     ; i <= n; i++)                                     // row=6                       
                                                 {                       
                                                 // Print spaces                       
                                                 for                                     (j = i; j < n; j++) {                       
                                                 System.out.print(                                     " "                                     );                       
                                                 }                       
                                                 // Print #                       
                                                 while                                     (k != (                                     2                                     * i -                                     1                                     )) {                       
                                                 if                                     (k ==                                     0                                     || k ==                                     2                                     * i -                                     2                                     )                       
                                                 System.out.print(                                     "#"                                     );                       
                                                 else                       
                                                 System.out.print(                                     " "                                     );                       
                                                 k++;                       
                                                 ;                       
                                                 }                       
                                                 k =                                     0                                     ;                       
                                   
                                                 // print next row                       
                                                 System.out.println();                       
                                                 }                       
                                                 // print last row                       
                                                 for                                     (i =                                     0                                     ; i <                                     2                                     * n -                                     1                                     ; i++) {                       
                                                 System.out.print(                                     "#"                                     );                       
                                                 }                       
                                                 }                       
                         }                       
           
                         /*This code is contributed by Nikita Tiwari.*/                       

python

                         # Python program to print a hollow                       
                         # pyramid pattern                       
           
                         def                                     printPattern( n) :                       
                                                 k                                     =                                     0                       
                                                 for                                     i                                     in                                     range                                     (                                     1                                     ,n                                     +                                     1                                     ) :                                     #row 6                       
                                   
                                                 # Print spaces                       
                                                 for                                     j                                     in                                     range                                     (i,n) :                       
                                                 print                                     (                                     ' '                                     , end                                     =                                     '')                       
                                   
                                                 # Print #                       
                                                 while                                     (k !                                     =                                     (                                     2                                     *                                     i                                     -                                     1                                     )) :                       
                                                 if                                     (k                                     =                                     =                                     0                                     or                                     k                                     =                                     =                                     2                                     *                                     i                                     -                                     2                                     ) :                       
                                                 print                                     (                                     '#'                                     , end                                     =                                     '')                       
                                                 else                                     :                       
                                                 print                                     (                                     ' '                                     , end                                     =                                     '')                       
                                                 k                                     =                                     k                                     +                                     1                       
                                                 k                                     =                                     0                                     ;                       
                                                 print                                     ("")                                     # print next row                       
                                   
                                                 # print last row                       
                                                 for                                     i                                     in                                     range                                     (                                     0                                     ,                                     2                                     *                                     n                                     -                                     1                                     ) :                       
                                                 print                                     (                                     '#'                                     , end                                     =                                     '')                       
           
                         # Driver code                       
                         n                                     =                                     6                       
                         printPattern(n)                       
           
                         # This code is contributed by Nikita Tiwari.                       

PHP

                         <?php                       
                         // php program to print a                       
                         // hollow pyramid pattern                       
           
                         function                                     printPattern(                                     $n                                     )                       
                         {                       
                                                 $k                                     = 0;                       
                                   
                                                 // row=6                       
                                                 for                                     (                                     $i                                     = 1;                                     $i                                     <=                                     $n                                     ;                                     $i                                     ++)                       
                                                 {                       
                                   
                                                 // Print spaces                       
                                                 for                                     (                                     $j                                     =                                     $i                                     ;                                     $j                                     <                                     $n                                     ;                                     $j                                     ++)                       
                                                 {                       
                                                 echo                                     " "                                     ;                       
                                                 }                       
                                   
                                                 // Print #                       
                                                 while                                     (                                     $k                                     != (2 *                                     $i                                     - 1))                       
                                                 {                       
                                                 if                                     (                                     $k                                     == 0 ||                                     $k                                     == 2 *                       
                                                 $i                                     - 2)                       
                                                 echo                                     "#"                                     ;                       
                                                 else                       
                                                 echo                                     " "                                     ;                       
                                                 $k                                     ++;                       
                                                 }                       
                                                 $k                                     = 0;                       
                                   
                                                 // print next row                       
                                                 echo                                     ""                                     ;                       
                                                 }                       
                                   
                                                 // print last row                       
                                                 for                                     (                                     $i                                     = 0;                                     $i                                     < 2 *                                     $n                                     - 1;                                     $i                                     ++)                       
                                                 {                       
                                                 echo                                     "#"                                     ;                       
                                                 }                       
                         }                       
           
                         //Driver Code                       
                         $n                                     = 6;                       
                         printPattern(                                     $n                                     );                       
           
                         // This code is contributed by mits                       
                         ?>                       

Javascript

                         <script>                       
                                                 // JavaScript program to print a hollow pyramid pattern                       
                                                 var                                     n = 6;                       
                                                 printPattern(n);                       
                                                 function                                     printPattern(n)                       
                                                 {                       
                                                 var                                     i, j, k = 0;                       
                                                 for                                     (i = 1; i <= n; i++)                                     // row=6                       
                                                 {                       
                                                 // Print spaces                       
                                                 for                                     (j = i; j < n; j++)                       
                                                 {                       
                                                 document.write(                                     "  "                                     );                       
                                                 }                       
                                   
                                                 // Print #                       
                                                 while                                     (k != 2 * i - 1)                       
                                                 {                       
                                                 if                                     (k == 0 || k == 2 * i - 2)                       
                                                 document.write(                                     "#"                                     );                       
                                                 else                       
                                                 document.write(                                     "  "                                     );                       
                                                 k++;                       
                                                 }                       
                                                 k = 0;                       
                                                 document.write(                                     "<br>"                                     );                                     // print next row                       
                                                 }                       
                                   
                                                 // print last row                       
                                                 for                                     (i = 0; i < 2 * n - 1; i++)                       
                                                 {                       
                                                 document.write(                                     "#"                                     );                       
                                                 }                       
                                                 }                       
                                   
                                                 // This code is contributed by rdtank.                       
                                                 </script>                       

输出：

          #    # #   #   #  #     # #       ##         # #         #  #       #   #     #    #   #     # #      #

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