[codility] PermCheck

app.codility.com/programmers/lessons/4-counting_elements/perm_check/

PermCheck coding task - Learn to Code - Codility

sorting해서 index와 value 비교

def solution(A):
    # write your code in Python 3.6

    a = sorted(A)
    for i,v in enumerate(a):
        if i+1 != v:
            return 0
    return 1