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29 lines
467 B
Markdown
Executable File
29 lines
467 B
Markdown
Executable File
# [404. Sum of Left Leaves](https://leetcode.com/problems/sum-of-left-leaves/)
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## 题目
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Find the sum of all left leaves in a given binary tree.
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**Example:**
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3
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/ \
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9 20
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/ \
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15 7
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There are two left leaves in the binary tree, with values 9 and 15 respectively. Return 24.
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## 题目大意
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计算给定二叉树的所有左叶子之和。
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## 解题思路
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- 这一题是微软的面试题。递归求解即可
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