C# Accepted solution

  • 0
    public bool IsSameTree(TreeNode p, TreeNode q) 
            if (p == null && q == null) return true;
            if ((p == null && q != null) || (p != null && q == null)) return false;
            if (p.val != q.val) return false;
            if (!IsSameTree(p.left, q.left)) return false;
            return IsSameTree(p.right, q.right);

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