public IEnumerable <int[]> GetAdjacentIntegers(GridAdjacentIntegerWindow gridWindow)
{
ArgumentCheck.IsNull(gridWindow, nameof(gridWindow));
int[] current = new int[gridWindow.WindowSize];
for (int i = 0; i < gridWindow.WindowSize; i++)
{
current[i] = gridWindow.GridData[gridWindow.MinY + i][gridWindow.MaxX - i];
}
yield return(current);
}
public void Should_return_max_product_of_3_ints_When_the_max_product_is_right_down()
{
var gridWindow = new GridAdjacentIntegerWindow(new int[][]
{
new int[] { 7, 2, 3 },
new int[] { 4, 8, 6 },
new int[] { 1, 5, 9 },
}, 0, 0, 3);
var expectedCount = 504;
productGridVisitor.VisitGridWindow(gridWindow);
Assert.AreEqual(expectedCount, productGridVisitor.LargestProduct);
}
public void Should_return_count_of_16_for_adjacent_ints_When_all_values_are_distinct_in_3x3()
{
var gridWindow = new GridAdjacentIntegerWindow(new int[][]
{
new int[] { 1, 2, 3 },
new int[] { 4, 5, 6 },
new int[] { 7, 8, 9 },
}, 0, 0, 3);
var expectedCount = 16;
distinctAdjacentGridVisitor.VisitGridWindow(gridWindow);
Assert.AreEqual(expectedCount, distinctAdjacentGridVisitor.GetDistinctCount());
}
public void Should_return_count_of_one_for_adjacent_ints_When_all_values_are_same()
{
var gridWindow = new GridAdjacentIntegerWindow(new int[][]
{
new int[] { 1, 1, 1 },
new int[] { 1, 1, 1 },
new int[] { 1, 1, 1 },
}, 0, 0, 3);
var expectedCount = 1;
distinctAdjacentGridVisitor.VisitGridWindow(gridWindow);
Assert.AreEqual(expectedCount, distinctAdjacentGridVisitor.GetDistinctCount());
}
public void VisitGridWindow(GridAdjacentIntegerWindow gridWindow)
{
ArgumentCheck.IsNull(gridWindow, nameof(gridWindow));
var max = _upAdjacentGridIntegers.GetAdjacentIntegers(gridWindow)
.Concat(_rightAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Concat(_rightUpAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Concat(_rightDownAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Select(Product)
.Max();
if (max > LargestProduct)
{
LargestProduct = max;
}
}
public void VisitGridWindow(GridAdjacentIntegerWindow gridWindow)
{
ArgumentCheck.IsNull(gridWindow, nameof(gridWindow));
var distinct = _upAdjacentGridIntegers.GetAdjacentIntegers(gridWindow)
.Concat(_downAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Concat(_leftAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Concat(_rightAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Concat(_leftUpAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Concat(_leftDownAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Concat(_rightUpAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Concat(_rightDownAdjacentGridIntegers.GetAdjacentIntegers(gridWindow))
.Select(a => Tuple.Create(a[0], a[1], a[2]))
.Distinct();
_distinct3Adjacent.AddRange(distinct);
}
public void Should_return_all_right_up_adjacent_integers_When_iterated_with_max_width()
{
var gridwindow = new GridAdjacentIntegerWindow(new int[][]
{
new int[] { 1, 2, 3 },
new int[] { 4, 5, 6 },
new int[] { 7, 8, 9 },
}, 0, 0, 3);
var expectedAdjacentValues = new int[][]
{
new int[] { 7, 5, 3 },
};
var actualAdjacentValues = rightUpAdjacentGridIntegers
.GetAdjacentIntegers(gridwindow)
.ToArray();
AssertEx.AreEqual(expectedAdjacentValues, actualAdjacentValues);
}
public void Should_return_all_left_down_adjacent_integers_When_iterated()
{
var gridwindow = new GridAdjacentIntegerWindow(new int[][]
{
new int[] { 1, 2, 3 },
new int[] { 4, 5, 6 },
new int[] { 7, 8, 9 },
}, 0, 0, 3);
var expectedAdjacentValues = new int[][]
{
new int[] { 3, 5, 7 },
};
var actualAdjacentValues = leftDownAdjacentGridIntegers
.GetAdjacentIntegers(gridwindow)
.ToArray();
AssertEx.AreEqual(expectedAdjacentValues, actualAdjacentValues);
}
