#include <iostream>
#include <string>
#include "chapter1.hpp"

/* Prompt
   Check Permutation: Given two strings, write a method to decide if
   one is a permutation of the other.
 */

bool CheckPermutation(const char* s1, const char* s2,
                      size_t s1_len, size_t s2_len){

  int letters1[255] = {};
  int letters2[255] = {};
  long unsigned int indx = 0;

  if(s1_len != s2_len){
    return false;
  }

  for(indx = 0; indx < s1_len; ++indx){
    int li1 = static_cast<int>(s1[indx]);
    int li2 = static_cast<int>(s2[indx]);
    letters1[li1] += 1;
    letters2[li2] += 1;
  }

  for(indx = 0; indx < 255; ++indx){
    if (letters1[indx] != letters2[indx]){
      return false;
    }
  }

  return true;
}