摘要: Invert a binary tree. 4 / \ 2 7 / \ / \1 3 6 9to 4 / \ 7 2 / \ / \9 6 3 1Trivia:This problem was inspired bythis... 阅读全文
posted @ 2015-10-06 18:53 六层楼 阅读(160) 评论(0) 推荐(0)