2017年7月6日
LeetCode 404. Sum of Left Leaves （左子叶之和）
摘要： Find the sum of all left leaves in a given binary tree. Example: 3 / \ 9 20 / \ 15 7 There are two left leaves in the binary tree, with values 9 and 1 阅读全文
posted @ 2017-07-06 23:51 Jimmy_Cheng 阅读(277) 评论(0) 推荐(0)