C語言經典算法 - 三色河內塔

#include <stdio.h>
void hanoi(int disks, char source, char temp, char target)
{
  if (disks == 1)
  {
    printf("move disk from %c to %c\n", source, target);
    printf("move disk from %c to %c\n", source, target);
    printf("move disk from %c to %c\n", source, target);
  }
  else
  {
    hanoi(disks - 1, source, target, temp);
    hanoi(1, source, temp, target);
    hanoi(disks - 1, temp, source, target);
  }
}

void hanoi3colors(int disks)
{
  char source = 'A';
  char temp = 'B';
  char target = 'C';
  int i;
  if (disks == 3)
  {
    printf("move disk from %c to %c\n", source, temp);
    printf("move disk from %c to %c\n", source, temp);
    printf("move disk from %c to %c\n", source, target);
    printf("move disk from %c to %c\n", temp, target);
    printf("move disk from %c to %c\n", temp, source);
    printf("move disk from %c to %c\n", target, temp);
    ;
  }
  else
  {
    hanoi(disks / 3-1, source, temp, target);
    printf("move disk from %c to %c\n", source, temp);
    printf("move disk from %c to %c\n", source, temp);
    printf("move disk from %c to %c\n", source, temp);
    hanoi(disks / 3-1, target, temp, source);
    printf("move disk from %c to %c\n", temp, target);
    printf("move disk from %c to %c\n", temp, target);
    printf("move disk from %c to %c\n", temp, target);
    hanoi(disks / 3-1, source, target, temp);
    printf("move disk from %c to %c\n", target, source);
    printf("move disk from %c to %c\n", target, source);
    hanoi(disks / 3-1, temp, source, target);
    printf("move disk from %c to %c\n", source, temp);
    for (i = disks / 3-1; i > 0; i--)
    {
      if (i > 1)
      {
        hanoi(i - 1, target, source, temp);
      }
      printf("move disk from %c to %c\n", target, source);
      printf("move disk from %c to %c\n", target, source);
      if (i > 1)
      {
        hanoi(i - 1, temp, source, target);
      }
      printf("move disk from %c to %c\n", source, temp);
    }
  }
}
int main()
{
  int n;
  printf("請輸入盤數：");
  scanf("%d", &n);
  hanoi3colors(n);
  return 0;
}</pre>