c# solution


  • 0
    M

    public bool IsSameTree(TreeNode p, TreeNode q)
    {
    if (p == null && q == null) return true;
    if ((p == null && q != null) || (p != null && q == null) || (p.val != q.val)) return false;

            return IsSameTree(p.left, q.left) && IsSameTree(p.right, q.right);
        }

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