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:** ![](https://assets.leetcode.com/uploads/2021/04/08/leftsum-tree.jpg) **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 Details

    • Solution

      public Solution()
  • Method Details

    • sumOfLeftLeaves

      public int sumOfLeftLeaves(TreeNode root)