input: Write a function to find the minimum difference between elements of two lists.
  assert minimize_difference([1, 3, 5, 11], [9, 8, 12, 15]) == 1
  assert minimize_difference([20, 14, 7, 8], [13, 10, 25, 30]) == 2
  assert minimize_difference([4, 17, 27, 36], [5, 20, 29, 38]) == 1
output: def minimize_difference(list1, list2):
      list1.sort()
      list2.sort()
      i, j = 0, 0
      min_diff = float('inf')
      
      while i < list1.size() and j < list2.size():
          min_diff = min(min_diff, abs(list1[i] - list2[j]))
          if list1[i] < list2[j]:
              i += 1
          else:
              j += 1
              
      return min_diff