string[] a=new  string[10];
                string[] b = new string[4];
                for (int i = 0; i < a.Length; i++)
                {
                    int b_index = i % b.Length;
                    switch (b_index)
                    {
                        case 0:
                            //b[b_index]=b[0]
                            //a[i]操作
                            break;
                        case 1:
                            break;
                        case 2:
                            break;
                        case 3:
                            break;
                        default:
                            break;
                    }
                }

------解决方案--------------------
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C# code

string[] a=new  string[10];
                string[] b = new string[4];
                for (int i = 0; i < a.Length; i++)
                {
                    int b_index = i % b.Leng……