Measure passwords strength task of flutter sessions at Roqay

passwordStrengthTask.dart

import 'dart:convert';
import 'dart:io';

void main() {
  var pass = stdin.readLineSync(encoding: utf8) ?? "";
  getPasswordStrength(pass);
}

void getPasswordStrength(String pass) {
  
  /// My Solution (session solution uses multiple vars instead of list)
  List<String> chars = pass.trim().split("");
  int numberIndex = 0, specialIndex = 1, upperIndex = 2, lowerIndex = 3;
  List<int> checks = [0, 0, 0, 0];

  chars.forEach((c) {
    if (int.tryParse(c) != null) {
      checks[numberIndex] = 1; // has numberIndex
    } else {
      if (c == c.toLowerCase() && c == c.toUpperCase()) {
        checks[specialIndex] = 1; // has specialIndex
      } else if (c == c.toUpperCase()) {
        checks[upperIndex] = 1; // has upperIndex
      } else if (c == c.toLowerCase()) {
        checks[lowerIndex] = 1; // has lowerIndex
      }
    }
  });

  int result = 0;
  checks.forEach((element) {
    result += element;
  });

  switch (result) {
    case 0:
      print("Invalid!");
      break;
    case 1:
      print("Very Weak!");
      break;
    case 2:
      print("Weak!");
      break;
    case 3:
      print("Medium!");
      break;
    case 4:
      print("Strong!");
      break;
  }
}