Write a Python algorithm as a function that takes two lists as input arguments and returns a boolean value indicating whether or not they have at least one common element.
def has_common_element(list1, list2): """ Check if two lists have at least one common element. """ for item1 in list1: for item2 in list2: if item1 == item2: return True return False # You can call this function with two lists, for example: list1 = [1, 2, 3, 4, 5] list2 = [5, 6, 7, 8, 9] print(has_common_element(list1, list2)) # prints True list3 = [10, 11, 12] list4 = [13, 14, 15] print(has_common_element(list3, list4)) # prints False
- This function iterates through each item: n the first list and compares it with every item in the second list.
- If a match is found: it returns True.
- If the function found no match: after has checked all pairs of items, the function returns False.
- In the first example: the function returns True because both lists have the common value 5.
- In the second example: the function returns False because there are no common values between the two lists.