Contents

import "dart:math" show pow;

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

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

  int difference(int input) => squareOfSums(input) - sumOfSquares(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

127 entries across 127 versions & 1 rubygems

Version	Path
trackler-2.2.1.12	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.11	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.10	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.9	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.8	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.7	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.6	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.5	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.4	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.3	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.2	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.1	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.1.0	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.0.6	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.0.5	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.0.4	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.0.3	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.0.2	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.0.1	tracks/dart/exercises/difference-of-squares/lib/example.dart
trackler-2.2.0.0	tracks/dart/exercises/difference-of-squares/lib/example.dart