leetcode-go/leetcode/easy/700.search-in-a-binary-search-tree.go

/**
 * Definition for a binary tree node.
 * type TreeNode struct {
 *     Val int
 *     Left *TreeNode
 *     Right *TreeNode
 * }
 */
func searchBST(root *TreeNode, val int) *TreeNode {
	if root == nil || root.Val == val {
		return root
	}
	if val < root.Val {
		return searchBST(root.Left, val)
	} else {
		return searchBST(root.Right, val)
	}
}