programming logic O

Question

I am inside script task of SSIS. Need to do following transformations:

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 


}

Is it possible to build a good loop around all this and getting the same result? Need help with the logic of this

This is what I could come up with

case: 7

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