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[코딜리티(Codility)/Lesson4/파이썬3(python3)] MissingInteger 문제 This is a demo task.Write a function: def solution(A) that, given an array A of N integers, returns the smallest positive integer (greater than 0) that does not occur in A.For example, given A = [1, 3, 6, 4, 1, 2], the function should return 5.Given A = [1, 2, 3], the function should return 4.Given A = [−1, −3], the function should return ..