day014 相同的树

链接

function isSameTree(p: TreeNode | null, q: TreeNode | null): boolean {
  if (p === null && q === null) return true
  if (p === null) return false;
  if (q === null) return false;
  if (p.val == q.val) {
    return isSameTree(p.left, q.left) && isSameTree(p.right, q.right)
  }else return  false
};