Path Sum

Given the root of a binary tree and an integer targetSum, determine if the tree has a root-to-leaf path where the sum of the values equals targetSum. A leaf is a node with no children.

Constraints

  • The number of nodes in the tree is in the range [0, 5000].
  • -1000 <= Node.val <= 1000
  • -1000 <= targetSum <= 1000
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# Definition for a binary tree node.
# class TreeNode:
# def __init__(self, val=0, left=None, right=None):
# self.val = val
# self.left = left
# self.right = right

class Solution:
def hasPathSum(self, root: TreeNode, targetSum: int) -> bool:
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