Map and Lambda Function in Python - HackerRank Solution
Map and Lambda Function in Python - HackerRank Solution
Problem :
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 <= 15
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].
Solution :
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | # Map and Lambda Function in Python - Hacker Rank Solution # Python 3 cube = lambda x: x**3# complete the lambda function def fibonacci(n): # return a list of fibonacci numbers # Map and Lambda Function in Python - Hacker Rank Solution START storage = [0, 1] for i in range(2, n): storage.append(storage[i-1] + storage[i-2]) return(storage[0:n]) # Map and Lambda Function in Python - Hacker Rank Solution END if __name__ == '__main__': n = int(input()) print(list(map(cube, fibonacci(n)))) |
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not passing all the test cases