Password.cpp

#include "Password.h"
#include <string>
#include <cctype> // For isupper() and islower()

using std::string;

/*
 The function receives a string and 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.
*/
bool Password::has_mixed_case(string pass) {
 bool has_upper = false;
 bool has_lower = false;

 for (char ch : pass) {
 if (isupper(ch)) {
 has_upper = true;
 } else if (islower(ch)) {
 has_lower = true;
 }

 // If both upper and lower cases are found, we can return true
 if (has_upper && has_lower) {
 return true;
 }
 }

 // Return false if either uppercase or lowercase is missing
 return false;
}