public void KClosest_1()
        {
            var solution = new _0973_KClosestPointsToOrigin();
            var result   = solution.KClosest(
                new int[][]
            {
                new int[] { 1, 3 },
                new int[] { -2, 2 }
            }, 1);

            AssertHelper.AssertArray(
                new int[][]
            {
                new int[] { -2, 2 }
            }, result);
        }
        public void KClosest_2()
        {
            var solution = new _0973_KClosestPointsToOrigin();
            var result   = solution.KClosest(
                new int[][]
            {
                new int[] { 3, 3 },
                new int[] { 5, -1 },
                new int[] { -2, 4 },
            }, 2);

            AssertHelper.AssertArray(
                new int[][]
            {
                new int[] { 3, 3 },
                new int[] { -2, 4 }
            }, result);
        }