摘要：【LeetCode】Minimum Depth of Binary TreeGiven a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path fro... 阅读全文

摘要：在Path SUm 1中（http://www.cnblogs.com/hitkb/p/4242822.html）我们采用栈的形式保存路径，每当找到符合的叶子节点，就将栈内元素输出。注意存在多条路径的情况。 public List> pathSum(TreeNode root, int sum) {... 阅读全文

摘要：Path Sum Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the giv... 阅读全文

摘要：随笔一记，留做重温！Flatten Binary Tree to Linked ListGiven a binary tree, flatten it to a linked list in-place. For example,Given 1 / \ 2 ... 阅读全文