513. Find Bottom Left Tree Value LeetCode Solution | Easy Approach

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Find Bottom Left Tree Value 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:

  • The number of nodes in the tree is in the range [1, 104].
  • -231 <= Node.val <= 231 - 1

Find Bottom Left Tree Value Solutions

Time: O(n)
Space: O(n)

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