public void TestStringify()
{
var dict = new Dictionary <int, int>
{
{ 1, 3 },
{ 2, 3 },
{ 3, 5 },
{ 4, 4 },
{ 5, 4 },
{ 6, 3 },
{ 7, 5 },
{ 8, 5 },
{ 9, 4 },
{ 10, 3 },
{ 11, 6 },
{ 12, 6 },
{ 13, 8 },
{ 14, 8 },
{ 15, 7 },
{ 16, 7 },
{ 17, 9 },
{ 18, 8 },//eighteen
{ 19, 8 },
{ 20, 6 },
{ 21, 9 },
{ 32, 9 },
{ 43, 10 },
{ 54, 9 },
{ 65, 9 },
{ 76, 10 },
{ 87, 11 },
{ 98, 11 },
{ 100, 10 },
{ 101, 13 + 3 },
{ 115, 13 + 7 },
{ 164, 13 + 9 },
{ 181, 13 + 6 + 3 },
{ 212, 13 + 6 },
{ 250, 13 + 5 },
{ 287, 13 + 6 + 5 },
{ 320, 15 + 6 },
{ 342, 23 },
{ 400, 4 + 7 },
{ 499, 14 + 6 + 4 },
{ 513, 4 + 7 + 3 + 8 },
{ 1000, 3 + 8 },
};
//Act
foreach (var entry in dict)
{
var res = NumberLetterCounts.Stringify(entry.Key);
//Assert
Assert.AreEqual(entry.Value, res, $"Testing {entry.Key}. Expected: <{entry.Value}>. Actual: <{res}>");
}
}
public void TestMethod2()
{
//Arrange
int n = 1000;
int expected = 21124;
//Act
var res = NumberLetterCounts.Solve(n);
//Assert
Assert.AreEqual(expected, res);
}
public void Count_GivenANumber_ReturnsNumberOfLetterUsedToWriteFromOneToThatNumber(
int number,
int expectedCount)
{
// arrange
var sut = new NumberLetterCounts();
// act
var count = sut.Count(number);
// assert
Assert.Equal(expectedCount, count);
}
static void Main(string[] args)
{
var numberLetterCounts = new NumberLetterCounts();
for (var i = 1; i <= 1000; i++)
{
var numberToLetters = numberLetterCounts.ToString(i);
var letterCounts = Regex.Replace(numberToLetters, @"[\s-]", "");
Console.WriteLine(i + " is " + numberToLetters + " has " + letterCounts.Count() + " letters.");
}
Console.Read();
}