input: Write a function to randomize a list of given integers using an optimized Fisher-Yates algorithm.
  using random
  def randomized_list(num_list):
      for i in range(len(num_list)-1,0,-1):
          j = random.randint(0,i)
          num_list[i],num_list[j] = num_list[j],num_list[i]
output: 
  import random
  def randomized_list(num_list):
      for i in range(len(num_list)-1,0,-1):
          j = random.randint(0,i)
          num_list[i],num_list[j] = num_list[j],num_list[i]
  