Language: Haskell Write a function time2Str that returns a string representation of timestamp in the form HH:MM:SS. (Hint: look up and use the built-in function show as well as ++.) Add leading zeros if necessary, such that the hours, minutes, and seconds are always two digits. (Assume that hours in the timestamp argument will never be three digits.) Use the following definition and type which represents the format (Hour, Mins, Seconds)
type TimeStamp = (Int, Int, Int)
time2Str :: TimeStamp -> String