private void button1_Click(object sender, EventArgs e)
        {
            int[] a = { 5, 7, 23, 37, 13, 83 };
            int[] b = GetFiveMax(a);
        }

        public int[] GetFiveMax(int[] array)
        {            
            Array.Sort<int>(array, new Comparison<int>(func));
            Array reArray = new int[5];
            Array.Copy(array, reArray, 5);
            return (int[])reArray;
        }

        public int func(int a, int b)
        {
            return b - a;
        }

------解决方案--------------------
冒泡能实现啊，而且不用全部排序，5次大循环就够了，也不麻烦。

------解决方案--------------------
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C# code
        private void button1_Click(object sender, EventArgs e)
        {
            int[] a = { 5, 7, 23, 37, 13, 83 };
            int[] b = GetFiveMax(a);
        }

        public int[] GetFiveMax(int[] array)
        {            
            Array.Sort<int>(array, new Comparison<int>(func));
            Array reArray = new int[5];
            Array.Copy(array, reArray, 5…