common_element_in_list

def common_elements(list1,list2):
    common = []
    count=0
    for i in list1:
        for j in list2:
            if(i==j):
                common.append(i)
                count=count+1
    print(common)
    print("Common elements in both list is : ",count)

def common_elements_dict(list1,list2):
    dict1={}
    for element in list2:
        dict1[element]=1
    count=0
    for i in list1:
        if dict1.get(i)!=None:
            print(i)
            count=count+1
    print("Number of elements common are: ", count)





l1=[2,4,6,8,10,12,14]
l2=[3,6,9,12,15,18]
common_elements_dict(l1,l2)