Open Zheaoli opened 2 years ago
/*
* @lc app=leetcode id=94 lang=typescript
*
* [94] Binary Tree Inorder Traversal
*/
// @lc code=start
/**
* Definition for a binary tree node.
* class TreeNode {
* val: number
* left: TreeNode | null
* right: TreeNode | null
* constructor(val?: number, left?: TreeNode | null, right?: TreeNode | null) {
* this.val = (val===undefined ? 0 : val)
* this.left = (left===undefined ? null : left)
* this.right = (right===undefined ? null : right)
* }
* }
*/
function inorderTraversal(root: TreeNode | null): number[] {
const inorder = [];
const walk = (node: TreeNode | null) => {
if (!node) return;
if (node.left) {
walk(node.left);
}
inorder.push(node.val);
if (node.right) {
walk(node.right);
}
}
walk(root);
return inorder;
};
// @lc code=end
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2022-09-28