A four-core chip is arranged as a 4 × 1 array of processors, where each processor is connected to its east and west neighbors. There are no connections on the ends of the array. The processors’ addresses start at 0 on the east most processor and go up by 1 to address 3 at the west-most processor. Given the current processor’s address and the address of a destination processor, how do you determine whether to go east or west to reach the destination processor?