# File: ChapterLists/listproduct.py
def innerProd(v1,v2): # v1,v2 vectors
    res = [] #initialize result
    for i in range(len(v1)):
        res.append(v1[i] * v2[i])
    return res

def main():
    print(innerProd([1,2,3],[1,0,1])) #[1,0,3]
    L1 = ['one', 'two']
    L2 = ['a', 'b' ]
    # ['one a', 'one b', 'two a', 'two b']
    print( L1, L2, [x + " " + y for x in L1 for y in L2 ])

    #[['one', 'a'], ['one', 'b'], ['two', 'a'], ['two', 'b']]     
    print([ [x,y] for x in L1 for y in L2 ])
    
    # [0, 0, 0, 0, 1, 2, 0, 2, 4]
    print( [x * y for x in range(3) for y in range(3) ])
    
    # ['a', 'b', 'aa', 'bb']
    print( [x * y for x in [1,2] for y in ['a','b'] ] )
    
    # ['ra', 'rb', 'sa', 'sb']
    print([x + y for x in ['r','s'] for y in ['a','b'] ])

    # ['exann', 'exben']
    print( ['ex' + y for y in ['ann','ben'] ] ) 
    
main()