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rhysm94/daysInMonth.swift

Created May 16, 2017 11:25
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daysInMonth.swift
func daysInMonth(year: Int, month: Int) -> Int {
switch (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0), month) {
case (true, 2):
return 29
case (false, 2):
return 28
case (_, 1), (_, 3), (_, 5), (_, 7), (_, 8), (_, 10), (_, 12):
return 31
default:
return 30
}
}
print(daysInMonth(year: 2017, month: 1)) // 31
print(daysInMonth(year: 2000, month: 2)) // 29
print(daysInMonth(year: 1700, month: 2)) // 28
print(daysInMonth(year: 2017, month: 2)) // 29
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