Medial number



Problem to find medial number from list.



Example-1:


Input    : l = [ 1, 2, 3, 4, 5]
Output   : 3   


Example-2:


Input    : l = [ 1, 2, 3, 4]
Output   : Null  







Solution





l = [ 1, 2, 3, 4, 5]

if(len(l) % 2 == 0):

    print("Null")

else:

    a = len(l)//2

    print(l[a])



Output



3