Map and Lambda Function in Python – HackerRank Solution

Map and Lambda Function in Python Hacker Rank Solution
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 Solution

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 – HackerRank Solution) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.

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