#Ava Smith
#smi01868
#CSCI 1133H section: 001
#Assignment 3

#================
#Purpose: To iterate through a list of lists and find strings found in all lists
#Input paramaters: names, a lits containing lists containing strings of names
#Return: New list, a list of names that appear in every sublist in the list names. Can be any length including an empty list
#==================

def busybody(names):
    new_list = []
    counter = 0
    if len(names) >= 1 and isinstance(names[0], list):
       
        for x in range(0, len(names[0])):
            counter = 0
            for y in range(1, len(names)):
                if names[y].count(names[0][x]) == 1:
                    counter +=1
                if counter == len(names)-1:
                    new_list.append(names[0][x])
                    
    if isinstance(names[0], str):
        return names
    if len(names) == 0:
        return []
            

    return new_list
if __name__ == "__main__":
    print("Pine", busybody([["Evans", "Hemsworth", "Pine", "Pratt", "Rock"],
                            ["Ebla", "Hemsworth", "Pine", "Quinto", "Salandra"],
                            ["Gadot", "Pascal", "Pine", "Wiig"]]))
    print("[]", busybody([["Andrew", "Ishika", "Meghna"],
                          ["Amina", "Demond", "Soha"],
                          ["Chelsey", "Joey", "Mitali"],
                          ["David", "Dawn", "Kevin"],
                          ["Ashlyn", "Sam", "Yasangi"]]))
    print("[Sam, Ben, Ted]", busybody(["Sam", "Ben", "Ted"]))
    print("[]", busybody([[],[]]))