Answer to Question #203748 in Python for kittu

Question

Given two polynomials A and B, write a program that adds the given two polynomials A and B.Input

The first line contains a single integer M.

Next M lines contain two integers Pi, Ci separated with space, where Pi denotes power and Ci denotes co-efficient of Pi for polynomial A.

After that next line contains a single integer N.

Next N lines contain two integers Pj, Cj separated with space, where Pj denotes power and Cj denotes co-efficient of Pj for polynomial B.Output

Print the addition of polynomials A and B.

The format for printing polynomials is: Cix^Pi + Ci-1x^Pi-1 + .... + C1x + C0, where Pi's are powers in decreasing order, Ci is co-efficient and C0 is constant, there will be space before and after the plus or minus sign.

If co-efficient is zero then don't print the term.

If the term with highest degree is negative, the term should be represented as -Cix^Pi.

For the term where power is 1 represent it as C1x instead of C1x^1.

if sum of polynimials is zero, the output will be "0"

Answer 1

M = int(input('Enter the number of M polynomial members: '))
polinom_a =[0 for item in range(M)]
print('Plolinom A data entry')
for item in range(M):
    p, c = input('Enter 2 integers separated by space Pi and Ci: ').split(' ')
    polinom_a[int(p)] = int(c)


    
N = int(input('Enter the number of N polynomial members: '))
polinom_b =[0 for item in range(N)]
print('Plolinom B data entry')
for item in range(N):
    p, c = input('Enter 2 integers separated by space Pj and Cj: ').split(' ')
    polinom_b[int(p)] = int(c)
# define references to polynomials of greater and lesser length
pol_max , pol_min = polinom_a , polinom_b
if len(pol_min) > len(pol_max):
    pol_max , pol_min = polinom_b , polinom_a 
# add the coefficients of the polynorms in pairs
for item in range(len(pol_min)):
    pol_max[item] += pol_min[item]



# print sum of polynomials
first = True
for index in range(len(pol_max)-1,-1,-1):
    if first:


        #if sum of polynimials is zero, the output will be "0"
        if pol_max[index]==0 and index == 0:
            print('0') 
            break       
        if pol_max[index]==1 and index != 0:
            pass   


        #If the term with highest degree is negative, the term should be represented as -Cix^Pi.    
        elif pol_max[index]==-1 and index != 0:
            print('-', end='')


        #if coeffiecient is 0 don't print the term
        elif pol_max[index]==0 and index != 0:
            continue
        else:
            print(f'{pol_max[index]}', end='')
        first = False
    else:
        if pol_max[index]>0:
            print(' + ', end='')


        # If the term with highest degree is negative, the term should be represented as -Cix^Pi.
        elif pol_max[index]<0:
            print(' - ', end = '')
            
        else:
            continue
        print(f'{abs(pol_max[index])}', end='')
    if index == 0:
        continue



    #For the term where power is 1 represent it as C1x instead of C1x^1.
    if index == 1:
        print('x', end='')
    
    else:
        print(f'x^{index}', end='')
print()

My output: