public void GetNNumbersWithSumEqualTo(int n, int result)
{
var numbers = Program.ReadInput(Program.InputTxt);
var p = new ExpandedSolver(numbers).GetNNumbersWithSumEqualTo(n, Program.SumToFind);
p.Aggregate((x, y) => x * y).Should().Be(result);
}
public long GetFirstNumberNotEqualToNPrecedent(int key)
{
for (var i = key; i < _numbers.Count; i++)
{
var lastNNumbers = _numbers.Skip(i - key).Take(key);
var twoNumbersWithSumEqualTo2 = new ExpandedSolver(lastNNumbers).GetNNumbersWithSumEqualTo(2, _numbers[i]);
if (!twoNumbersWithSumEqualTo2.Any())
{
return(_numbers[i]);
}
}
throw new InvalidOperationException("No such number");
}
public void Generate2UpletsTest()
{
var numbers = new long[] { 1, 2, 3 };
var expected = new[]
{
new[] { 1, 1 },
new[] { 1, 2 },
new[] { 1, 3 },
new[] { 2, 1 },
new[] { 2, 2 },
new[] { 2, 3 },
new[] { 3, 1 },
new[] { 3, 2 },
new[] { 3, 3 }
};
var result = new ExpandedSolver(numbers).GenerateNUplets(2).ToList();
result.Should().BeEquivalentTo(expected);
}
