无聊 学下java

ubuntu上装了eclipse.java环境都装好了,不过从来没写过java代码.

刚才浏览一个专门讲解leetcode的站点,上面用java讲解题目,就跟着码起来了:

那道翻转子单词的题,java是酱紫写的:

public class ReverseWord {/** * @param args */public static String reverseWords(String s){if (null == s || s.length() == 0){return "";}String [] arr = s.split(" ");StringBuilder sb = new StringBuilder();for (int i = arr.length-1; i >= 0; --i){if (!arr[i].equals("")){sb.append(arr[i]).append(" ");}}return sb.length() == 0 ? "" : sb.substring(0, sb.length()-1);}public static void main(String[] args) {// TODO Auto-generated method stubSystem.out.print(reverseWords("hello world !"));}}

话说这时博客上第一次写java吧,纪念下.