Algorithm

Problem Name: Python - Map and Lambda Function

In this HackerRank Functions in PYTHON problem 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.

Concept

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)
6
``````

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 <

Output Format

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

Sample Input

``````5
``````

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].

15

Code Examples

#1 Code Example with Python Programming

```Code - Python Programming```

``````
cube = lambda x: x ** 3
sqrt = lambda x: x ** 0.5

def fibonacci(n):
phi = (1 + sqrt(5)) / 2
return [int((phi ** i - (1 - phi) ** i) / sqrt(5)) for i in range(n)]

if __name__ == '__main__':
n = int(input())
print(list(map(cube, fibonacci(n))))
``````
Copy The Code &