#poly_repr.py exercise 6.10

#The two functions are copied from the book, section 6.1.3
def eval_poly_dict(poly, x):
    sum = 0.0
    for power in poly:
        sum += poly[power]*x**power
    return sum

def eval_poly_list(poly, x):
    sum = 0
    for power in range(len(poly)):
        sum += poly[power]*x**power
    return sum

#-0.5+2*x**100, dict version
poly_dict = {0:-0.5,100:2}

#same polynomial as a list
poly_list = [0]*101
poly_list[0]= -0.5
poly_list[100] = 2

#print both to the screen
print(poly_dict)
print(poly_list)

#evaluate and print both for x = 1.05
print(eval_poly_dict(poly_dict,1.05))
print(eval_poly_list(poly_list,1.05))

"""
Terminal> python poly_repr.py
{0: -0.5, 100: 2}
[-0.5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2]
262.50251569260803
262.50251569260803
"""