public static int NumberOfLettersInSpelledNumbers(int from, int to)
{
int sum = 0;
for (int num = from; num <= to; num++)
{
sum += SpellNumbers
.Spell(num)
.Split(' ')
.Select(w => w.Length)
.Sum();
}
return(sum);
}
public void SpellNumbers_342()
{
Assert.Equal(
"three hundred and forty two",
SpellNumbers.Spell(342));
}
public void SpellNumbers_901()
{
Assert.Equal(
"nine hundred and one",
SpellNumbers.Spell(901));
}
public void SpellNumbers_115()
{
Assert.Equal(
"one hundred and fifteen",
SpellNumbers.Spell(115));
}
