Password.cpp

#include "Password.h"
#include <string>

using std::string;

/*
  The function receives a string counts how many times the same character 
  occurs at the beginning of the string, before any other characters (or the
  end of the string). The function is case-sensitive so 'Z' is different than
  'z' and any ASCII characters are allowed.
*/
int Password::count_leading_characters(string phrase){
  int repetition = 1;
  int index = 0;
  while( index < phrase.length()-1 && phrase[index] == phrase[index+1] ){
    repetition++;
    index++;
  }
  return repetition;
}

/*
  receives a string and returns whether it has both at least one upper-case
  letter and at least one lower-case letter
*/
#include <cctype>
bool Password::has_mixed_case(string str)
{
  int count_lower = 0;
  for (int i = 0; i < str.length(); i++)
  {
    if (str[i] >= 'a' && str[i] <= 'z')
    {
      count_lower++;
    }
  }
  return count_lower > 0 && count_lower < str.length();
}

// x13 - get unique characters
#include <vector>
int Password::get_unique_chars(string word) {
  std::vector<char> unique_chars;

  // check word chars
  for(int i = 0; i < word.length(); i++){
    char c = word[i];
    bool unique = true;
    
    // check unique chars
    for (int j = 0; j < unique_chars.size(); j++){
      if(c == unique_chars[j]){
        unique = false;
      }
    }

    // update unique chars
    if(unique){
      unique_chars.push_back(c);
    }
  }

  // return 'n' characters
  return unique_chars.size();
}