private static ProductAndFactors GetLargestProductFromUpperLeftHalfOfMatrix(List <List <int> > numberGrid, int countOfAdjacentNumbers)
{
var result = new ProductAndFactors();
for (var i = numberGrid.Count - 1; i >= countOfAdjacentNumbers - 1; i--)
{
var startingPointRow = i;
var startingPointColumn = 0;
var series = new List <int>();
for (var j = 0; j <= i; j++)
{
series.Add(numberGrid[startingPointRow - j][startingPointColumn + j]);
}
var currentColumn = ProductInSeries.GetLargestProductInASeries(series, countOfAdjacentNumbers);
if (currentColumn.Product <= result.Product)
{
continue;
}
result.Product = currentColumn.Product;
result.Factors.Clear();
result.Factors = currentColumn.Factors;
}
return(result);
}
public void GivenNumberInput_WhenConvertingStringToIntArray_ThenGetCorrectArray()
{
var result = ProductInSeries.ConvertStringToIntArray("02358");
Assert.AreEqual(5, result.Count);
Assert.AreEqual(0, result[0]);
Assert.AreEqual(2, result[1]);
Assert.AreEqual(3, result[2]);
Assert.AreEqual(5, result[3]);
Assert.AreEqual(8, result[4]);
}
public void WhenSeriesIsLongerThanAmountOfAdjacentDigits_ThenReturnCorrectResult()
{
var series = new List <int> {
1, 9, 5, 7, 3, 8, 4, 9
};
var result = ProductInSeries.GetLargestProductInASeries(series, 5);
Assert.AreEqual(7560, result.Product);
Assert.AreEqual(9, result.Factors[0]);
Assert.AreEqual(5, result.Factors[1]);
Assert.AreEqual(7, result.Factors[2]);
Assert.AreEqual(3, result.Factors[3]);
Assert.AreEqual(8, result.Factors[4]);
}
private static ProductAndFactors GetLargestProductHorizontally(List <List <int> > numberGrid, int countOfAdjacentNumbers)
{
var result = new ProductAndFactors();
foreach (var row in numberGrid)
{
var currentRow = ProductInSeries.GetLargestProductInASeries(row, countOfAdjacentNumbers);
if (currentRow.Product <= result.Product)
{
continue;
}
result.Product = currentRow.Product;
result.Factors.Clear();
result.Factors = currentRow.Factors;
}
return(result);
}
private static ProductAndFactors GetLargestProductVertically(List <List <int> > numberGrid, int countOfAdjacentNumbers)
{
var result = new ProductAndFactors();
for (var i = 0; i < numberGrid.Count; i++)
{
var series = new List <int>();
foreach (var row in numberGrid)
{
series.Add(row[i]);
}
var currentColumn = ProductInSeries.GetLargestProductInASeries(series, countOfAdjacentNumbers);
if (currentColumn.Product <= result.Product)
{
continue;
}
result.Product = currentColumn.Product;
result.Factors.Clear();
result.Factors = currentColumn.Factors;
}
return(result);
}
public void WhenSeriesIsShorterThanAmountOfAdjacentDigits_ThenThrowError()
{
var series = new List <int>();
ProductInSeries.GetLargestProductInASeries(series, 5);
}
public void GivenLettersInInput_WhenConvertingStringToIntArray_ThenThrowError()
{
ProductInSeries.ConvertStringToIntArray("1234086532t324");
}