c# string split and combine

Question

i have a string that conatin 5 numbers like

'1,4,14,32,47'

i want to make from this string 5 strings of 4 number in each one

like :

 '1,4,14,32'
 '1,4,14,47'
 '1,4,32,47'
 '1,14,32,47'
 '4,14,32,47'

what is the simple/faster way to do it

is the way of convert this to array unset every time diffrent entery and combine them back to string ?

is there a simple way to do it ?

thanks

Answer 1

How about something like

string s = "1,4,14,32,47";
string r = String.Join(",", s.Split(',').Where((x, index) => index != 1).ToArray());

Answer 2

Using string.Split() you can create a string array. Loop through it, so that in each loop iteration you indicate which element should be skipped (on the first pass, ignore the first element, on the second pass, ignore the second element).

Inside that loop, create a new array that contains all elements but the one you want to skip, then use string.Join() to create each result.