#!/usr/bin/env lua

--[[
Challenge 096

TASK #1 > Reverse Words
Submitted by: Mohammad S Anwar
You are given a string $S.

Write a script to reverse the order of words in the given string. The string
may contain leading/trailing spaces. The string may have more than one space
between words in the string. Print the result without leading/trailing spaces
and there should be only one space between words.

Example 1:
Input: $S = "The Weekly Challenge"
Output: "Challenge Weekly The"
--]]

-- concatenate all words (to be able to split multiple spaces)
text = ""
for i=1,#arg do text = text..arg[i].." "; end

-- spit by spaces, store in reverse order
words = {}
for word in string.gmatch(text, "([^%s]+)") do
    table.insert(words, 1, word)
end

io.write(table.concat(words, " "), "\n")