求一个数组相邻数的最大和，并且得到开始编号和结束编号（原创）

代码如下：

 

        static void GetMax()
        {
            int[] items = new int[] { 31, -41, 59, 26, -53, 58, 97, -93, -23, 84 };

            //int[] items = new int[] { 31, -41, -59, -26};

            //int[] items = new int[] { -10,20,-5};

            int beginIndex = 0;
            int? maxTotal = null;
            int endIndex = 0;

            int itemsLength = items.Length;
            if (itemsLength == 1)
            {
                //只有一个元素
                maxTotal = items[0];
                beginIndex = 1;
                endIndex = 1;
            }
            else if (itemsLength == 2)
            {
                //只有二个元素
                if (items[0] > items[1])
                {
                    maxTotal = items[0];
                    beginIndex = 1;
                    endIndex = 1;
                }
                else
                {
                    maxTotal = items[1];
                    beginIndex = 2;
                    endIndex = 2;
                }
                if ((items[0] + items[1]) > maxTotal)
                {
                    maxTotal = items[0] + items[1];
                    beginIndex = 1;
                    endIndex = 2;
                }
            }
            else
            {
                for (int i = 0; i < itemsLength; i++)
                {
                    for (int j = i + 1; j < itemsLength; j++)
                    {
                        int tempMax = items[i];
                        for (int k = (i + 1); k <= j; k++)
                        {
                            tempMax += items[k];
                        }
                        if (!maxTotal.HasValue || tempMax > maxTotal)
                        {
                            beginIndex = i + 1;
                            endIndex = j + 1;
                            maxTotal = tempMax;
                        }
                    }
                }
            }
            Console.WriteLine("最大值：" + maxTotal);
            Console.WriteLine("开始编号为：" + beginIndex);
            Console.WriteLine("结束编号为：" + endIndex);
            Console.ReadKey();
        }

 

等待更新...