I want to sort an array something like this.
Suppose I have 4 users they log into their device like this
User 1 device (user id's 1,2,3,4)
User 2 device (user id's 1,2,3,4)
User 3 device (user id's 1,2,3,4)
User 4 device (user id's 1,2,3,4)
Now I want them to be sorted like this in each of their devices like clockwise.
User 1 device (user id's 1,2,3,4)
User 2 device (user id's 2,3,4,1)
User 3 device (user id's 3,4,1,2)
User 4 device (user id's 4,1,2,3)
Does someone knows any algorithm to achieve this?
You might be able to remove the first item of the array and then add it to the end and continue until the the user see's their username/id. This may work because as you remove the first item they are all shifted down to the first spot.
while([[array objectAtIndex:0] id] != [user id])
{
id temp = [[array objectAtIndex:0] retain];
[array removeObjectAtIndex:0]; //may cause a deallocation of "temp" if it weren't retained
[array addObject:temp];
[temp release];
}