missingintegers python personal notes


Of course, if you do it normally, it will be returned with N ** 2. So, it seems to be the usual way, but I will make a flag and set it cumulatively. And one lap + the last judgment (live in size (N))

def solution(A):
    A = sorted(A)
    B = [i for i in A if (0 < i) and (i <= len(A))]
    tester = [0] * len(A)
    for i in B:
        tester[i-1] +=1
        return tester.index(0) + 1
        return len(B)+1

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