def linear_search_count(val, A):
    count = 0
    N = len(A)
    for i in range(N):
        count = count + 1
        if val == A[i]:
            print("発見!", count)
            return True
    print("未発見", count)
    return False

A = [3,7,2,9,1,5,8,4,6,10]
linear_search_count(1, A)
linear_search_count(10, A)
linear_search_count(11, A)
