PYTHON

Using Python Permutations function on a String with extra parameter

from itertools import permutations 
string="SOFT"
a=permutations(string,2) 
for i in list(a): 
   # join all the letters of the list to make a string 
   print("".join(i))

Using python permutations function on a list with extra function

from itertools import permutations
print(len(list(permutations([1,2,3,4],4))))