HackerRank Python - Set Intersection Operation




.intersection()
The .intersection() operator returns the intersection of a set and the set of elements in an iterable.
Sometimes, the & operator is used in place of the .intersection() operator, but it only operates on the set of elements in set.
The set is immutable to the .intersection() operation (or & operation).



  1. # Enter your code here. Read input from STDIN. Print output to STDOUT
  2. e = int(input())
  3. eng = set(map(int,input().split()))
  4. f = int(input())
  5. fre = set(map(int,input().split()))
  6. print(len(eng & fre))
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