MIPS help please

1. Create an array of 21 INTEGERS, you can put whatever you want in it, but they shouldnt be sorted. Without using recursion:
   1. Create a procedure to find the largest called findLargest
   2. Create a procedure to find the smallest called findSmallest.
   3. Create procedure called range, which is the difference between largest and smallest (range should call findLargest and findSmallest)