text: #include "LongestCommonPrefix.hpp"
  
  string LongestCommonPrefix::longestCommonPrefix(vector<string> &strs) {
      if (strs.empty())
          return "";
  
      for (int idx = 0; idx < strs[0].size(); ++idx) {
          for (int i = 1; i < strs.size(); ++i) {
              if (strs[i][idx] != strs[0][idx])
                  return strs[0].substr(0, idx);
          }
      }
  
      return strs[0];
  }
  