把一个英语句子中的单词次序颠倒后输出。例如输入“how are you”，输出“you are how”；

import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.regex.Pattern;

/**
 * @description: 把一个英语句子中的单词次序颠倒后输出
 * @author: yzk
 * @create: 2016-03-23
 **/

public class CharUtil {

 public static void main(String[] args) {
    String str = "how are you";
    String strs[] = str.split("\s+|[.]");
    List<String> list = Arrays.asList(strs);
    Collections.reverse(list);
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < list.size(); i++) {
        if (i > 0) {
            sb.append(" ");
        }
        sb.append(list.get(i));
    }
    System.out.println(sb.toString());
 }

}