title: Return the difference between the largest and smallest values
body: <p>Given an array length 1 or more of ints, return the difference between the largest and smallest values in the list. Note: I don't want to use min and max function.. [10,3,5,6] - 7 , [7,2,10,9] - 8 </p>
  
  <pre><code>our_list = []
  numbers=int(input("enter numbers").strip()) 
  our_list.append(numbers) 
  our_list.sort() 
  print (our_list)  
  </code></pre>
  
  <p>Here is my logic, first I will display the list of the inputted value and then I will use sort method to sort the list to find the min and max number from the list and then I will deduct from the max to min number but I am not able to achieve the result, Here is my code so far.. </p>
  
  <p>The above code is not even sorting the numbers thus not able to move ahead,  please help. </p>