Contents

import "dart:math" show pow;

class DifferenceOfSquares {
  int squareOfSum(int input) => pow(_sum(input), 2);

  int sumOfSquare(int input) => _range(input).map((i) => pow(i, 2)).reduce((r, i) => r + i);

  int differenceOfSquares(int input) => squareOfSum(input) - sumOfSquare(input);

  int _sum(int input) => input * (input + 1) ~/ 2;

  List<int> _range(int length) => new List<int>.generate(length, (i) => i + 1);
}

Version data entries

66 entries across 66 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.179	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.178	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.177	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.176	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.175	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.174	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.173	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.172	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.171	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.170	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.169	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.167	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.166	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.165	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.164	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.163	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.162	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.161	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.160	tracks/dart/exercises/difference-of-squares/lib/example.dart