Java for Leetcode 151 Reverse Words in a String

Given an input string, reverse the string word by word.

For example,
Given s = " the sky is blue ",
Return " blue is sky the ".

Problem Solving Ideas:

A lot of methods, the simplest way to directly press "" Spilt can, Java implementation is as follows:

    Public String reversewords (string s) {if (s = = NULL | | s.length () = = 0) return s; string[] str = s.split (""); StringBuilder sb = new StringBuilder (); for (int i = str.length-1; I >= 0; i--) if (Str[i].length () >= 1) sb.append (s Tr[i] + ""); if (Sb.length () > 1) Sb.deletecharat (Sb.length ()-1); return sb.tostring ();    }

Java for Leetcode 151 Reverse Words in a String