LeetCode 617 by Swift — iOSHenry Huang·FollowPublished in66henry 程式筆記·1 min read·Aug 7, 2019--Sharehttps://leetcode.com/problems/merge-two-binary-trees/二元樹題目條件將兩個二元樹各節點相加得到一個新的二元樹解法