Java Challenge - frontBack

Given a string, return a new string where the first and last chars have been exchanged.

frontBack("code") → "eodc"
frontBack("a") → "a"
frontBack("ab") → "ba"

My Solution :

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public String frontBack(String str) { if (str.length() == 0 || str.length() == 1) return str; char temp1 = str.charAt(0); char temp2 = str.charAt(str.length()-1); String temp3 = str.substring(1, str.length()-1); String result = temp2+temp3+temp1; return result; }

CodingBat's Solution :

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public String frontBack(String str) { if (str.length() <= 1) return str; String mid = str.substring(1, str.length()-1); // last + mid + first return str.charAt(str.length()-1) + mid + str.charAt(0); }

Weeew... My solution looks so bad... :v :v :v
But it doesn't matter, I'm just getting started... B-)