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westdabestdb/DifferenceOfSquares.dart

Created June 16, 2019 19:07
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DifferenceOfSquares
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DifferenceOfSquares.dart
import 'dart:math';
void main() {
var d = DifferenceOfSquares();
var sum = d.differenceOfSquares(10);
print(sum);
}
class DifferenceOfSquares {
int sumOfSquares(int inputInt) => List<int>.generate(inputInt, (i) => i + 1)
.map((x) => x * x)
.reduce((a, b) => a + b);
int squareOfSum(int inputInt) => pow(
List<int>.generate(inputInt, (i) => i + 1).reduce((a, b) => a + b), 2);
int differenceOfSquares(int inputInt) =>
squareOfSum(inputInt) - sumOfSquares(inputInt);
}
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