Leetcode: Reverse String - Qiita

require 'minitest/autorun' require 'pry' class ReverseString < Minitest::Test def test_run input = ["h", "e", "l", "l", "o"] output = ["o", "l", "l", "e", "h"] assert_equal(output, reverse_string(input)) end def reverse_string(s, index = 0) return s if index == s.size / 2 first_char = s[index] last_char = s[s.size - 1 - index] s[index] = last_char s[s.size - 1 - index] = first_char index += 1 reve