Map and Lambda Function Hackerrank Solution

Map and Lambda Function Hackerrank Solution
Map and Lambda Function

Map and Lambda Function 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.


The 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)


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.



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]


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


#Map and Lambda Function Hackerrank Solution

cube = lambda x:x*x*x

def fibonacci(n):

    a, b= 0, 1
    for _ in range(n):
        yield a
        a, b = b, a + b

if __name__ == '__main__':
    n = int(raw_input())
    print map(cube, fibonacci(n))

#Map and Lambda Function Hackerrank Solution

Disclaimer: This problem is originally created and published by HackerRank, we only provide solutions to this problem. Hence, doesn’t guarantee the truthfulness of the problem. This is only for information purposes.

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