| about | help | code help+videos | done | prefs | 
| Given a string, return a new string where the first and last chars have been exchanged. front_back('code') → 'eodc' front_back('a') → 'a' front_back('ab') → 'ba' ...Save, Compile, Run (ctrl-enter) | 
Progress graphs: 
 Your progress graph for this problem
 Random user progress graph for this problem 
 Random Epic Progress Graph
Difficulty: 133.0
Copyright Nick Parlante 2017 - privacy