#pseudo code

function(string):
 words <- [] # holds found words
    word  <- "" # finds words
 
    for i from 0 to length of str:
     if str[i] is not " ":
         append str[i] to word
         if i is equal to length of str:
             append word to words
        else
         append word to words
            word <- ""
     result <- ""
     for i from length of words to 0:
      append words[i] to result
     return result