Day 18 二叉树 - 找树左下角的值
513. 找树左下角的值
function findBottomLeftValue(root: TreeNode | null): number {
let res = 0;
let queue = [root];
while (queue.length) {
const length = queue.length;
let curRes = [];
for (let i = 0; i < length; i++) {
...
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