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Given the root
of a binary tree and an integer targetSum
, return all root-to-leaf paths where each path's sum equals targetSum
.
A leaf is a node with no children.
Example 1:
Input: root = [5,4,8,11,null,13,4,7,2,null,null,5,1], targetSum = 22
Output: [[5,4,11,2],[5,8,4,5]]
Example 2:
Input: root = [1,2,3], targetSum = 5
Output: []
Example 3:
Input: root = [1,2], targetSum = 0
Output: []
Constraints:
- The number of nodes in the tree is in the range
[0, 5000]
.
-1000 <= Node.val <= 1000
-1000 <= targetSum <= 1000
[Tree]
[Depth-first Search]
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