【leetcode】1302. Deepest Leaves Sum
題目如下： Given a binary tree, return the sum of values of its deepest leaves. Example 1: Constraints: The number of nodes ...
原文：[LeetCode] Sum of Left Leaves 左子葉之和
Find the sum of all left leaves in a given binary tree. Example: 這道題讓我們求一棵二叉樹的所有左子葉的和，那么看到這道題我們知道這肯定是考二叉樹的遍歷問題，那么最簡潔的寫法肯定是用遞歸，由於我們只需要累加左子葉之和，那么我們在進入遞歸函數的時候需要知道當前結點是否是左子節點，如果是左子節點，而且該左子節點再沒有子節點了說明其是左子 ...
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