imk0tter

Untitled

Jul 20th, 2011
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  1. void permute(char * input, char * next);
  2. void remove(char * destination, char * source, int position);
  3.  
  4. void permute(char * input) {
  5. char buffer[] = { 0 };
  6. permute(input,buffer);
  7. }
  8. void permute(char * input, char * next) {
  9. if (!input[0]) printf("%s\n",next);
  10. for (int i = 0; *(input+i); ++i) {
  11. char buff[128];
  12. char _buff[128];
  13.  
  14. remove(buff,input,i);
  15.  
  16. int len = strlen(next);
  17.  
  18. memcpy(_buff,input+i,1);
  19. memcpy(_buff+1,next,len+1);
  20.  
  21. permute(buff, _buff);
  22. }
  23. }
  24. void remove(char * output, char * input, int pos) {
  25. int length = strlen(input), posi = 0;
  26. for (int i = 0; i <= length; ++i)
  27. if (pos != i) output[posi++] = *(input+i);
  28. }
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