Write program code for below input to get required output

Question

Write program/code for below input to get the required output

Input

str1= abcde

str2= abret

Output: "rcdt"

Please help me to solve this

Answer 1

That is a "set subtraction" operation. Use the set data structure for that.

Str1 = {a,b,c,d,e}
Str2 = {a,b,r,e,t}
print Str1 - Str2

Output:

>>> print Str1 - Str2
set([r,c,d,t])