LeetCode.872-叶子值相等的树(Leaf-Similar Trees) 这是悦乐书的第334次更新,第358篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第204题(顺位题号是872)。考虑二叉树的所有叶子,从左到右的顺序,这些叶子的值形成叶子值序列。 例如,在上面给定的树中,叶子值序列是(6,7,4,9,8)。 如果两...
Consider all the leaves of a binary tree. From left to right order, the values of those leaves form a leaf value sequence. Two binary trees are considered leaf-similar if their leaf value sequence is the same. Returntrueif and only if the two given trees with head nodesroot1androot2are ...
*/classSolution{publicbooleanleafSimilar(TreeNoderoot1,TreeNoderoot2){StringBuildersb=newStringBuilder();StringBuildersb2=newStringBuilder();getLeafValue(root1,sb);getLeafValue(root2,sb2);returnsb.toString().equals(sb2.toString());}publicvoidgetLeafValue(TreeNoderoot,StringBuildersb){if(root!=null)...
Two binary trees are considered leaf-similar if their leaf value sequence is the same. Return true if and only if the two given trees with head nodes root1 and root2 are leaf-similar. Note: Both of the given trees will have between 1 and 100 nodes. 题意:给定两棵树,每棵树的叶子序列...
一、Description A full binary tree is a binary tree where each node has exactly 0 or 2 children. Return a list of all possible full binary trees with N nodes. Each element... leetcode951. Flip Equivalent Binary Trees 题目链接 题目:给出两棵树,问能不能通过翻转(互换)左右孩子节点而互相转...
LeetCode-872. Leaf-Similar Trees Consider all the leaves of a binary tree. From left to right order, the values of those leaves form aleaf value sequence. For example, in the given tree above, the leaf value sequence is (6, 7, 4, 9, 8)....
Two binary trees are consideredleaf-similarif their leaf value sequence is the same. Returntrueif and only if the two given trees are leaf-similar. Example 1: Input: root1"xyz"/ \"abcd""aabc"root2"xy"/ \"abc""daabc"Output:trueExplanation: (a, b,c, d, a, a, b,c) = (a, ...
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Leetcode872.Leaf-Similar Trees叶子相似的树 请考虑一颗二叉树上所有的叶子,这些叶子的值按从左到右的顺序排列形成一个 叶值序列 。 举个例子,如上图所示,给定一颗叶值序列为 (6, 7, 4, 9, 8) 的树。 如果有两颗二叉树的叶值序列是相同,那么我们就认为它们是 叶相似 的。
Returntrueif and only if the two given trees with head nodesroot1androot2are leaf-similar. 这道题定义了一种叶相似树,就是说若两棵树的叶结点按照从左向右的顺序取出来排成序列,若两个序列相同,则说明二者是叶结点相似树。其实本质就是按从左到右的顺序打印二叉树的叶结点呗,那么根据这种顺序,我们采用...