HackerRank Reduce Function solution in Python

HackerRank Reduce Function solution in Python – In this Hackerrank Reduce function problem, you are given a list of rational numbers, and you are asked to find their product.

Concept
The reduce() function applies a function of two arguments cumulatively on a list of objects in succession from left to right to reduce it to one value. Say you have a list, say [1,2,3] , and you have to find its sum.

>>> reduce(lambda x, y : x + y,[1,2,3])
6

You can also define an initial value. If it is specified, the function will assume the initial value as the value given, and then reduce. It is equivalent to adding the initial value at the beginning of the list. For example:

>>> reduce(lambda x, y : x + y, [1,2,3], -3)
3

>>> from fractions import gcd
>>> reduce(gcd, [2,4,8], 3)
1

HackerRank Reduce Function solution in Python 2.

from __future__ import print_function
from fractions import Fraction
import operator

def product(fracs):
    t =  reduce(operator.mul , fracs)
    return t.numerator, t.denominator

if __name__ == '__main__':
    fracs = []
    for _ in range(input()):
        fracs.append(Fraction(*map(int, raw_input().split())))
    result = product(fracs)
    print(*result)

Reduce function solution in Python 3.

from fractions import Fraction
from functools import reduce
import operator
def product(fracs):
    t =  reduce(operator.mul , fracs) 
    return t.numerator, t.denominator


if __name__ == '__main__':
    fracs = []
    for _ in range(int(input())):
        fracs.append(Fraction(*map(int, input().split())))
    result = product(fracs)
    print(*result)

Problem solution in pypy programming.

from __future__ import print_function
from fractions import Fraction
import operator
def product(fracs):
    t = reduce(operator.mul , fracs)
    return t.numerator, t.denominator

if __name__ == '__main__':
    fracs = []
    for _ in range(input()):
        fracs.append(Fraction(*map(int, raw_input().split())))
    result = product(fracs)
    print(*result)

Problem solution in pypy3 programming.

from fractions import Fraction
from functools import reduce
import operator
def product(fracs):
    t = reduce(operator.mul , fracs)
    return t.numerator, t.denominator

if __name__ == '__main__':
    fracs = []
    for _ in range(int(input())):
        fracs.append(Fraction(*map(int, input().split())))
    result = product(fracs)
    print(*result)