Remove all duplicates from the input string. | GeeksforGeeks

char *removeDups(char *str)

{

  bool bin_hash[NO_OF_CHARS] = {0};

  int ip_ind = 0, res_ind = 0;

  char temp;   

  /* In place removal of duplicate characters*/ 

  while(*(str + ip_ind))

  {

    temp = *(str + ip_ind);

    if(bin_hash[temp] == 0)

    {

        bin_hash[temp] = 1;

        *(str + res_ind) = *(str + ip_ind);

        res_ind++;        

    }

    ip_ind++;

  }     

  /* After above step string is stringiittg.

     Removing extra iittg after string*/       

  *(str+res_ind) = '\0';  

  return str;

}

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