[Solved] Sum and Prod in PYTHON solution in Hackerrank

Problem Name: Python - Sum and Prod

Problem Link: https://www.hackerrank.com/challenges/np-sum-and-prod/problem?isFullScreen=true  

In this HackerRank Functions in PYTHON problem solution,

sum

The sum tool returns the sum of array elements over a given axis.

import numpy

my_array = numpy.array([ [1, 2], [3, 4] ])

print numpy.sum(my_array, axis = 0)         #Output : [4 6]
print numpy.sum(my_array, axis = 1)         #Output : [3 7]
print numpy.sum(my_array, axis = None)      #Output : 10
print numpy.sum(my_array)                   #Output : 10

By default, the axis value is None. Therefore, it performs a sum over all the dimensions of the input array.

prod

The prod tool returns the product of array elements over a given axis.

import numpy

my_array = numpy.array([ [1, 2], [3, 4] ])

print numpy.prod(my_array, axis = 0)            #Output : [3 8]
print numpy.prod(my_array, axis = 1)            #Output : [ 2 12]
print numpy.prod(my_array, axis = None)         #Output : 24
print numpy.prod(my_array)                      #Output : 24

By default, the axis value is None. Therefore, it performs the product over all the dimensions of the input array.

Task

You are given a 2-D array with dimensions N * M.

Your task is to perform the sum tool over axis 0 and then find the product of that result.

The first line of input contains space separated values of N and M.

The next N lines contains M space separated integers.

Compute the sum along axis 0. Then, print the product of that sum.

2 2
1 2
3 4

24