From 44431beba42984033e546d1958cc117e3a60fdc0 Mon Sep 17 00:00:00 2001 From: Breno Baptista Date: Thu, 24 Jun 2021 21:43:46 -0300 Subject: [PATCH] Added English README for problem 617 --- .../0617.Merge-Two-Binary-Trees/README.md | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 leetcode/0617.Merge-Two-Binary-Trees/README.md diff --git a/leetcode/0617.Merge-Two-Binary-Trees/README.md b/leetcode/0617.Merge-Two-Binary-Trees/README.md new file mode 100644 index 00000000..ec7478b1 --- /dev/null +++ b/leetcode/0617.Merge-Two-Binary-Trees/README.md @@ -0,0 +1,30 @@ +# [617. Merge Two Binary Trees](https://leetcode.com/problems/merge-two-binary-trees/) + +## 题目 + +You are given two binary trees **root1** and **root2**. + +Imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are not. You need to merge the two trees into a new binary tree. The merge rule is that if two nodes overlap, then sum node values up as the new value of the merged node. Otherwise, the NOT null node will be used as the node of the new tree. + +Return the merged tree. + +**Note**: The merging process must start from the root nodes of both trees. + +**Example 1**: + +``` +Input: root1 = [1,3,2,5], root2 = [2,1,3,null,4,null,7] +Output: [3,4,5,5,4,null,7] +``` + +**Example 2**: + +``` +Input: root1 = [1], root2 = [1,2] +Output: [2,2] +``` + +**Constraints**: + +1. The number of nodes in both trees is in the range [0, 2000]. +2. -104 <= Node.val <= 104