Watch 10 video solutions for Find Bottom Left Tree Value, a medium level problem involving Tree, Depth-First Search, Breadth-First Search. This walkthrough by NeetCode has 16,336 views views. Want to try solving it yourself? Practice on FleetCode or read the detailed text solution.
Given the root of a binary tree, return the leftmost value in the last row of the tree.
Example 1:
Input: root = [2,1,3] Output: 1
Example 2:
Input: root = [1,2,3,4,null,5,6,null,null,7] Output: 7
Constraints:
[1, 104].-231 <= Node.val <= 231 - 1