递归 字符串翻转

/**
 *  递归实现 字符串翻转
 * */
class A
{
	public static String reverse(String originStr)
	{
		if(originStr == null || originStr.length() <= 1)
		{
			return originStr;
		}
		return reverse(originStr.substring(1)) + originStr.charAt(0);
	}
}