编程逻辑！ ：O

Question

因为想要看似合理的编程逻辑而难以忍受。

在SSIS的脚本任务中。需要做一些数据转换..以下..

switch(LeadTime) 
{ 

case: 1 

WM1 = DAY1 
WM2 = DAY2 
WM3 = DAY3 
WM4 = DAY4 
WM5 = DAY5 
WM6 = DAY6 
WM7 = DAY7 


case: 2 

WM1 = DAY1 + DAY2 
WM2 = DAY2 + DAY3 
WM3 = DAY3 + DAY4 
WM4 = DAY4 + DAY5 
WM5 = DAY5 + DAY6 
WM6 = DAY6 + DAY7 
WM7 = DAY7 + DAY1 


case: 3 


WM1 = DAY1 + DAY2 + DAY3 
WM2 = DAY2 + DAY3 + DAY4 
WM3 = DAY3 + DAY4 + DAY5 
WM4 = DAY4 + DAY5 + DAY6 
WM5 = DAY5 + DAY6 + DAY7 
WM6 = DAY6 + DAY7 + DAY1 
WM7 = DAY7 + DAY1 + DAY2 


.................. 

case: 7 

WM1 = DAY1 + DAY2 + DAY3 + DAY4 + DAY5 + DAY6 + DAY7 
WM2 = DAY2 + DAY3 + DAY4 + DAY5 + DAY6 + DAY7 + DAY1 
WM3 = DAY3 + DAY4 + DAY5 + DAY6 + DAY7 + DAY1 + DAY2 
WM4 = DAY4 + DAY5 + DAY6 + DAY7 + DAY1 + DAY2 + DAY3 
WM5 = DAY5 + DAY6 + DAY7 + DAY1 + DAY2 + DAY3 + DAY4 
WM6 = DAY6 + DAY7 + DAY1 + DAY2 + DAY3 + DAY4 + DAY5 
WM7 = DAY7 + DAY1 + DAY2 + DAY3 + DAY4 + DAY5 + DAY6 


} 

我怎样才能建立一个循环，使其良好的编程？我在亏损，因为它在中间价值后从两端增加..

这是我所能做的！ ：O

case: 7 

for(int i=0;i<LeadTime;i++) 
{ 
WM1 += Array[i]; 
WM2 += Array[i]; 
... 
WM7 += Array[i]; 
} 

Answer 1

像这样的东西应该为所有情况下工作（假设数组是从零开始）：

for(int i=0;i<LeadTime;i++) 
{ 
    WM1 += Array[(0+i)%7]; 
    WM2 += Array[(1+i)%7]; 
    ... 
    WM7 += Array[(6+i)%7]; 
} 

Answer 2

您可以使用模数进行换行。这应该为所有工作：

WM = new int[7]; 
for (int i = 0; i < LeadTime; i++) { 
    for (int j = 0; j < WM.Length; j++) { 
    WM[j] += Array[(i + j) % 7]; 
    } 
} 

Answer 3

你想要做的是创造，你可以调用一个函数不同的情况。

function foo(int LeadTime) { 
    for(int i=0; i < LeadTime; i++){ 
     int k = i; 
     for (int j = 0; j < LeadTime; j++){ 
      if (k > 7) { k = 1; } 
      wm[i] += day[k]; 
      k++; 
     } 
    } 
} 

Answer 4

我很快想出了这段代码。 Bascially你将不得不做一个嵌套循环

string[] days = new string[] { "DAY1", "DAY2", "DAY3", "DAY4", "DAY5", "DAY6", "DAY7" }; 

      List<string> res = new List<string>(); 
      res.Add(string.Empty); 

      int Leadtime = 7; 

      for (int i = 1; i <= Leadtime; i++) 
      { 
       res.Add(string.Empty); 
       int tmp = i + Leadtime - 1; 

       for (int x = i; x <= tmp; x++) 
       { 
        if (x > Leadtime) { x = 1; tmp = i-1; } 
        res[i] += " " + days[x-1]; 
       } 

      } 

      foreach (string s in res) 
      { 
       Console.WriteLine(s); 
      } 

      Console.ReadKey(); 

结果：

DAY1 DAY2 DAY3 DAY4 DAY5 DAY6 DAY7 
DAY2 DAY3 DAY4 DAY5 DAY6 DAY7 DAY1 
DAY3 DAY4 DAY5 DAY6 DAY7 DAY1 DAY2 
DAY4 DAY5 DAY6 DAY7 DAY1 DAY2 DAY3 
DAY5 DAY6 DAY7 DAY1 DAY2 DAY3 DAY4 
DAY6 DAY7 DAY1 DAY2 DAY3 DAY4 DAY5 
DAY7 DAY1 DAY2 DAY3 DAY4 DAY5 DAY6