Package g0401_0500.s0404_sum_of_left_leaves

Class Solution

java.lang.Object

g0401_0500.s0404_sum_of_left_leaves.Solution

public class Solution
extends Object

404 - Sum of Left Leaves.<p>Easy</p> <p>Given the <code>root</code> of a binary tree, return the sum of all left leaves.</p> <p><strong>Example 1:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2021/04/08/leftsum-tree.jpg" alt="" /></p> <p><strong>Input:</strong> root = [3,9,20,null,null,15,7]</p> <p><strong>Output:</strong> 24</p> <p><strong>Explanation:</strong> There are two left leaves in the binary tree, with values 9 and 15 respectively.</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> root = [1]</p> <p><strong>Output:</strong> 0</p> <p><strong>Constraints:</strong></p> <ul> <li>The number of nodes in the tree is in the range <code>[1, 1000]</code>.</li> <li><code>-1000 <= Node.val <= 1000</code></li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	sumOfLeftLeaves(TreeNode root)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

sumOfLeftLeaves

public int sumOfLeftLeaves(TreeNode root)