Map and Lambda Function - Hacker Rank Solution

Let's learn some new Python concepts! You have to generate a list of the first  fibonacci numbers,  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 .

Constraints

Output Format

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

Sample Input

5

Sample Output

[0, 1, 1, 8, 27]

Explanation

The first  fibonacci numbers are , and their cubes are .

Map and Lambda Function - Hacker Rank Solution

Use map and lambda x : x*x*x tools to compute the cube of fibonacci numbers.

# Enter your code here. Read input from STDIN. Print output to STDOUT
N = int(raw_input())
A = [0,1]
for i in range(2,N): A.append(A[i-1]+A[i-2])        
print map(lambda a: a*a*a,A)[:N]