Question

nonPrime_lst(L) accepts a list L of integers ( >1 ) and returns a list that contains all the Nonprime numbers picked from L. For example, nonPrime_lst([2,4,5,7,10,11,12,15,19] should return [4,10,12,15]).
in Python

Answer 1

Solution:

def nonPrime_lst(L):
    nonprimes = []
    for i in L:
        n = i
        count = 0
        for j in range(1, n + 1):
            if n % j == 0:
                count = count + 1
        if count != 2:
            nonprimes.append(n)
    return nonprimes


print("List of non prime numbers is", nonPrime_lst([2, 4, 5, 7, 10, 11, 12, 15, 19]))

Output: