exampleSort.dart

// Сортировка по образцу
// Напиши функцию, которая сортирует массив по каталогу. В каталоге есть все элементы из входного массива, но во входном массиве необязательно есть все элементы из каталога.

// Пример:
// Входной массив: [1,3,4,4,4,4,5]
// Каталог: [4,1,2,3,5]
// Результат: [4,4,4,4,1,3,5]

Iterable<int> exampleSort(Iterable<int> array, Iterable<int> catalog) {
  return [1, 2, 3];
}































































































bool hasErrors = false;
List<String> messages = [];

void main() {
  test('should work with empty array and catalog', () {
    expect(exampleSort([], []), equals([]));
  });
  test('should work with empty array', () {
    expect(exampleSort([], [1, 2, 3]), equals(<int>[]));
  });
  test('should work with example', () {
    expect(exampleSort([1, 3, 4, 4, 4, 4, 5], [4, 1, 2, 3, 5]), equals([4, 4, 4, 4, 1, 3, 5]));
  });
  test('should work with different array size', () {
    expect(exampleSort([1, 2, 0, 3], [0, 1]), equals([0, 1]));
    expect(exampleSort([1, 2, 0, 3], [3]), equals([3]));
  });
  test('should work with equal array size', () {
    expect(exampleSort([1, 2, 3, 4, 5], [2, 3, 4, 1, 5]), equals([2, 3, 4, 1, 5]));
  });
  test('should work with repeated values', () {
    expect(exampleSort([1, 2, 3, 3, 3, 4, 5], [2, 3, 4, 1, 5]), equals([2, 3, 3, 3, 4, 1, 5]));
    expect(exampleSort([1, 2, 3, 3, 3, 5], [2, 3, 4, 1, 5]), equals([2, 3, 3, 3, 1, 5]));
    expect(exampleSort([1, 2, 3, 3, 3, 5], [3, 4, 5, 6, 9, 11, 12, 13, 1, 7, 8, 2, 10]), equals([3, 3, 3, 5, 1, 2]));
    expect(exampleSort([1, 1, 1, 5, 1, 7], [1, 7, 4, 5]), equals([1, 1, 1, 1, 7, 5])); 
  });
  
  _exampleSort([], []);
  
  if(!hasErrors ){
     print('💪Tests are passed! \n\n');
  } else {
     print('💩 Tests aren\'t passed! \n\n');
  }
  print(messages.join('\n'));
}

typedef bool Checker(dynamic input);

Checker equals(dynamic input) {
  return (dynamic internalInput) {
    input.toString() == internalInput.toString()
        ? true
        : throw AssertionError('value: $input is not equal: $internalInput');
  };
}

void test(String name, Function input) {
  try {
    input();
    messages.add('✓   $name');
  } catch (e) {
    hasErrors = true;
    if (e is AssertionError) {
      messages.add('✗   $test failed \n      name: $name\n      exception: ${e.message}');
    }
  }
}

void expect(dynamic input, bool validator(dynamic validatorInput)) {
  validator(input);
}






























































Iterable<int> _exampleSort(Iterable<int> array, Iterable<int> catalog) {
  if (array == null) return null;
  if (catalog == null) return null;

  final tmpMap = <int, int>{};
  array.forEach((value) {
    tmpMap.containsKey(value) ? tmpMap[value] ++ : tmpMap[value] = 1;
  });

  final result = <int>[];
  catalog.forEach((value) {
    if (tmpMap.containsKey(value)) {
      result.addAll(List.filled(tmpMap[value], value));
    }
  });

  return result;
}