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  1. #include <stdio.h>
  2.  
  3. #define DISKS 4 // 10 max
  4. int stacks[3][DISKS];
  5. int sps[3];
  6.  
  7. void init(int from)
  8. {
  9.   int i;
  10.   sps[2] = sps[1] = sps[0] = 0;
  11.   for (i = 0; i < DISKS; i++)
  12.     stacks[from][i] = DISKS - i; // disk radius
  13.   sps[from] = DISKS;
  14. }
  15.  
  16. void print(void)
  17. {
  18.   int i, j, k;
  19.   for (i = DISKS - 1; i >= 0; i--)
  20.   {
  21.     for (j = 0; j < 3; j++)
  22.     {
  23.       if (sps[j] > i)
  24.       {
  25.         for (k = 0; k < 10 - stacks[j][i]; k++)
  26.           printf(" ");
  27.         for (k = 0; k < 2 * stacks[j][i]; k++)
  28.           printf("x");
  29.         for (k = 0; k < 10 - stacks[j][i]; k++)
  30.           printf(" ");
  31.       }
  32.       else
  33.       {
  34.         printf("                    "); // 10 * 2
  35.       }
  36.       printf("  ");
  37.     }
  38.     printf("\n");
  39.   }
  40.   printf("_________/\\_________  _________/\\_________  _________/\\_________\n\n");
  41. }
  42.  
  43. void solve(int to, int from, int cnt)
  44. {
  45.   int other = from ^ to ^ 3;
  46.  
  47.   if (!cnt) return;
  48.  
  49.   solve(other, from, cnt - 1);
  50.  
  51.   stacks[to][sps[to]++] = stacks[from][--sps[from]];
  52.   print();
  53.  
  54.   solve(to, other, cnt - 1);
  55. }
  56.  
  57. int main(void)
  58. {
  59.   init(0);
  60.   print();
  61.   solve(2, 0, DISKS);
  62.   return 0;
  63. }
  64.  
Success #stdin #stdout 0s 1832KB
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stdin
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stdout
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         xx                                                       
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_________/\_________  _________/\_________  _________/\_________

                                                                  
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_________/\_________  _________/\_________  _________/\_________

                                                                  
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_________/\_________  _________/\_________  _________/\_________
https://ideone.com/yb2aFf
language:
C99 (gcc 8.3)
created:
12 years ago
visibility:
public

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