- Difficulty: Medium
- Tags: LeetCode, Medium, Stack, Tree, Depth-First Search, Binary Search Tree, Two Pointers, Binary Search, Binary Tree, leetcode-1214, O(n), 🔒
Problem
Given the roots of two binary search trees, root1
and root2
, return true
if and only if there is a node in the first tree and a node in the second tree whose values sum up to a given integer target
.
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Example 1:
Input: root1 = [2,1,4], root2 = [1,0,3], target = 5 Output: true Explanation: 2 and 3 sum up to 5.
Example 2:
Input: root1 = [0,-10,10], root2 = [5,1,7,0,2], target = 18 Output: false
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Constraints:
- The number of nodes in each tree is in the range
[1, 5000]
. -109 <= Node.val, target <= 109