Hackerrank Polynomials Solution
1 min read

Hackerrank Polynomials Solution

Hackerrank Polynomials Solution


The poly tool returns the coefficients of a polynomial with the given sequence of roots.

print numpy.poly([-1, 1, 1, 10])        #Output : [  1 -11   9  11 -10]


The roots tool returns the roots of a polynomial with the given coefficients.

print numpy.roots([1, 0, -1])           #Output : [-1.  1.]


The polyint tool returns an antiderivative (indefinite integral) of a polynomial.

print numpy.polyint([1, 1, 1])          #Output : [ 0.33333333  0.5         1.          0.        ]


The polyder tool returns the derivative of the specified order of a polynomial.

print numpy.polyder([1, 1, 1, 1])       #Output : [3 2 1]


The polyval tool evaluates the polynomial at specific value.

print numpy.polyval([1, -2, 0, 2], 4)   #Output : 34


The polyfit tool fits a polynomial of a specified order to a set of data using a least-squares approach.

print numpy.polyfit([0,1,-1, 2, -2], [0,1,1, 4, 4], 2)
#Output : [  1.00000000e+00   0.00000000e+00  -3.97205465e-16]

The functions polyadd, polysub, polymul, and polydiv also handle proper addition, subtraction, multiplication, and division of polynomial coefficients, respectively.


You are given the coefficients of a polynomial .
Your task is to find the value of  at point .

Input Format

The first line contains the space separated value of the coefficients in .
The second line contains the value of .

Output Format

Print the desired value.

Sample Input

1.1 2 3

Sample Output


Solution in python3

Approach 1.

import numpy

Approach 2.

import numpy
print(numpy.polyval(tuple(map(float, input().split())), float(input())))

Approach 3.

import numpy
print (numpy.polyval(list(map(float, input().split())), float(input())))

Solution in python

Approach 1.

import numpy as np
A = map(float,raw_input().split())
print np.polyval(A,input())

Approach 2.

import numpy
print numpy.polyval(map(float,raw_input().split()),float(raw_input()))

Approach 3.

import numpy
print numpy.polyval(map(float, raw_input().split()), float(raw_input()))

Enjoying these posts? Subscribe for more

Adblocker detected! Please consider reading this notice.

We've detected that you are using AdBlock Plus or some other adblocking software which is preventing the page from fully loading.

That's okay. But without advertising-income, we can't keep making this site awesome.

We don't have any banner, Flash, animation, obnoxious sound, or popup ad. We do not implement these annoying types of ads!

We need money to operate the site, and almost all of it comes from our online advertising.

Please add thepoorcoder.com to your ad blocking whitelist or disable your adblocking software.