Recursion Solution

num = [1, 5, 7, 12, 5, 7, 2, 0]

def find_duplicates(input_list):
    seen = set()
    duplicates = []

    for num in input_list:
        if num in seen:
            duplicates.append(num)
        else:
            seen.add(num)

    return duplicates

duplicates = find_duplicates(num)

if duplicates:
    print("The repeated numbers are:", duplicates)
else:
    print("No repeated numbers found.")