conventional.py

stream=[1,2,3,4,5,6,4,2,5,9,1,6,3,7,1,2,2,4,2,1]
print('Using conventional Algorithm:')
start_time = time.time()
st_unique=[]
for i in stream:
    if i in st_unique:
        continue
    else:
        st_unique.append(i)
        
print('distinct elements',len(st_unique))
print("--- %s seconds ---" % (time.time() - start_time))