Map and Lambda Function in Python HackerRank Solution

Hello Programmers, In this post, you will know how to solve the Map and Lambda Function in Python HackerRank Solution. This problem is a part of the HackerRank Python Programming Series.

Map and Lambda Function in Python HackerRank Solution
Map and Lambda Function in Python HackerRank Solutions

One more thing to add, don’t directly look for the solutions, first try to solve the problems of Hackerrank by yourself. If you find any difficulty after trying several times, then you can look for solutions.

Map and Lambda Function in Python HackerRank Solution


Let’s learn some new Python concepts! You have to generate a list of the first N fibonacci numbers, 0 being the first number. Then, apply the map function and a lambda expression to cube each fibonacci number and print the list.

ConceptThe map() function applies a function to every member of an iterable and returns the result. It takes two parameters: first, the function that is to be applied and secondly, the iterables.
Let’s say you are given a list of names, and you have to print a list that contains the length of each name.

>> print (list(map(len, ['Tina', 'Raj', 'Tom'])))
[4, 3, 3]

Lambda is a single expression anonymous function often used as an inline function. In simple words, it is a function that has only one line in its body. It proves very handy in functional and GUI programming.

>> sum = lambda a, b, c: a + b + c
>> sum(1, 2, 3)

Note :Lambda functions cannot use the return statement and can only have a single expression. Unlike def, which creates a function and assigns it a name, lambda creates a function and returns the function itself. Lambda can be used inside lists and dictionaries.

Input Format :

One line of input: an integer N.

Constraints :

  • 0 <= N <= 15

Output Format :

A list on a single line containing the cubes of the first N fibonacci numbers.

Sample Input :


Sample Output :

[0, 1, 1, 8, 27]

Explanation :

The first 5 fibonacci numbers are [0, 1, 1, 2, 3] , and their cubes are [0, 1, 1, 8, 27].

Map and Lambda Function in Python HackerRank Solutions

cube = lambda x: x ** 3
def fibonacci(n):
    a, b, c = 0, 1, 1
    for _ in range(n):
        yield a
        a, b = b, a + b
if __name__ == '__main__':
    n = int(input())
    print(list(map(cube, fibonacci(n))))

Disclaimer: The above Problem (Map and Lambda Function in Python) is generated by Hackerrank but the Solution is Provided by BrokenProgrammers. This tutorial is only for Educational and Learning purposes.

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