#File: ChapterLists/setmodule.py
"""Given two lists, computes the union and intersection of the two lists
works with any kind of lists no sorting needed
L1 = [2, 4, 6] L2 = [4, 8, 5, 5, 5]
S1= {2, 4, 6} S2 = {8, 4, 5} intersection= {4}
S1= {2, 4, 6} S2 = {8, 4, 5} union= {2, 4, 5, 6, 8}
S1= {2, 4, 6} S2 = {8, 4, 5} difference= {2, 6}
turing {'t', 'r', 'g', 'u', 'i', 'n'}
"""
def main():
    L1 = [2,4,6]
    L2 = [4,8,5,5,5]
    print("L1 =", L1, "L2=", L2)
    # conversion lists to sets 
    S1 = set(L1) #{2, 4, 6}
    S2 = set(L2) #{4, 8, 5} - removes duplicates and sorts
    #apply set operations
    print("S1=", S1, "S2=", S2, "intersection= ",S1.intersection(S2))
    print("S1=", S1, "S2=", S2, "union= ",S1.union(S2))
    print("S1=", S1, "S2=", S2, "difference= ",S1.difference(S2))

    w ="turing"
    S = set(w) 
    print(w, S)
main()