lowest_common_ancestor

  • 2022-12-14
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lowest_common_ancestor.go 源码

package main

//二叉树的最近公共祖先

func lowestCommonAncestor(root, p, q *TreeNode) *TreeNode {
	if root == nil || root == p || root == q {
		return root
	}

	left := lowestCommonAncestor(root.Left, p, q)
	right := lowestCommonAncestor(root.Right, p, q)
	if left != nil && right != nil {
		return root
	}
	if left != nil {
		return left
	}
	return right
}

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