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.

Easy

Given the root of a binary tree, return the sum of all left leaves.

Example 1:

Input: root = [3,9,20,null,null,15,7]

Output: 24

Explanation: There are two left leaves in the binary tree, with values 9 and 15 respectively.

Example 2:

Input: root = [1]

Output: 0

Constraints:

• The number of nodes in the tree is in the range [1, 1000].
• -1000 <= Node.val <= 1000

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
int	sumOfLeftLeaves(TreeNode root)

Methods inherited from class java.lang.Object

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

Constructor Detail

Solution

public Solution()

Method Detail

sumOfLeftLeaves

public int sumOfLeftLeaves(TreeNode root)