初次尝试mac下markdown 免费写作工具-Writed

感觉效果很好， 输入文字和代码都很方便，专注于写作，是写博客的好助手。 推荐大家试用。

Writed was created by Stahl Labs AB to

provide the best distraction free

writing tool for Mac.

*
This program  is used to reverse the string.
*/
// reverse string

import java.util.*;

public class  ReverseStr{
	public static void main(String[] args) {
	  		String[] strArr = { "hello world", "", "iammai" };

			for( String str: strArr)
 			System.out.println(String.format(" %s -> %s ", str, reverseStr(str)));

	}

	public static String reverseStr( String str) {
		String res = "";
		if (str.length() == 0 || str == null) return str;

		for(int i= str.length()-1;  i>= 0 ;  i--) {
			res += str.charAt(i);
		}
		return res;
	}