0539-minimum-time-difference.rb

# frozen_string_literal: true

# 539. Minimum Time Difference
# https://leetcode.com/problems/minimum-time-difference
# Medium

=begin
Given a list of 24-hour clock time points in "HH:MM" format, return the minimum minutes difference between any two time-points in the list.

Example 1:
Input: timePoints = ["23:59","00:00"]
Output: 1

Example 2:
Input: timePoints = ["00:00","23:59","00:00"]
Output: 0


Constraints:
* 2 <= timePoints.length <= 2 * 104
* timePoints[i] is in the format "HH:MM".
=end


# @param {String[]} time_points
# @return {Integer}
deffind_min_difference(time_points)
return0iftime_points.size > 1440

time_points.map!{ |time| time.split(":").map(&:to_i).reduce(0){ |h,m| h * 60 + m}}.sort!
time_points << time_points[0] + 1440
time_points.each_cons(2).map{ |a,b| b - a}.min
end

# ********************#
# TEST #
# ********************#

require"test/unit"
classTest_find_min_difference < Test::Unit::TestCase
deftest_
assert_equal1,find_min_difference(["23:59","00:00"])
assert_equal0,find_min_difference(["00:00","23:59","00:00"])
end
end