import 'package:test/test.dart';

List<int> sortedSquaredArray(List<int> array) {

int start = 0;

int end = array.length - 1;

int sortedIndex = array.length - 1;

List<int> answer = List.filled(array.length, 0);

while (end >= start) {

if (array[start].abs() > array[end].abs()) {

answer[sortedIndex] = array[start] * array[start];

start += 1;

} else {

answer[sortedIndex] = array[end] * array[end];

end -= 1;

}

sortedIndex -= 1;

}

return answer;

}

void main() {

test('test case 1', () {

expect(sortedSquaredArray([-1, -1, 2, 3, 3, 3, 4]), [1, 1, 4, 9, 9, 9, 16]);

});

test('test case 2', () {

expect(sortedSquaredArray([0]), [0]);

});

test('test case 2', () {

expect(sortedSquaredArray([-7, -6, -5, -4, -3, -2, -1]),

[1, 4, 9, 16, 25, 36, 49]);

});

test('test case 4', () {

expect(

sortedSquaredArray([1, 2, 3, 4, 5, 6, 7]), [1, 4, 9, 16, 25, 36, 49]);

});

}