2017年3月24日
541. 反转字符串2 Reverse String II
摘要： Given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. If there are less than k characters left, reverse all of them... 阅读全文
posted @ 2017-03-24 22:36 xiejunzhao 阅读(207) 评论(0) 推荐(0)