Another update from ingydotnet^djgoku

Task/Substring-Top-and-tail/Erlang/substring-top-and-tail.erl

@@ -1,6 +1,8 @@
-% Implemented by Arjun Sunel
-string:left("Hello", length("Hello")-1,$.). 	% To strip the word from the right by 1
-
-string:right("Hello", length("Hello")-1,$.).		% To strip the word from the left by 1
-
-string:left(string:right("Hello", length("Hello")-1,$.), length("Hello")-2,$.).  %To strip the word from both sides by 1.
+1> Str = "Hello".
+"Hello"
+2> string:sub_string(Str, 2).                   % To strip the string from the right by 1
+"ello"
+3> string:sub_string(Str, 1, length(Str)-1).    % To strip the string from the left by 1
+"Hell"
+4> string:sub_string(Str, 2, length(Str)-1).    % To strip the string from both sides by 1
+"ell"