In this post, we will solve Update List HackerRank Solution. This problem (Update List) is a part of HackerRank Functional Programming language.
Task
Update the values of a list with their absolute values. The input and output portions will be handled automatically during grading. You only need to write a function with the recommended method signature.
Input Format
There are N integers, each on a separate line. These are the N elements of the input array.
Output Format
Output the absolute value of N integers, each on a separate line in the same input order.
Sample Input
2
-4
3
-1
23
-4
-54
Sample Output
2
4
3
1
23
4
54
Constraints
- The list will have no more than 100 integers.
- Each integer, X, in the list: -100 <= X <= 100.
Recommended Method Signature
Number Of Parameters: 1
Parameters: [list]
Returns: List or Vector
For Hackers Using Clojure
This will be the outline of your function body (fill in the blank portion marked by underscores):
(fn[lst]___________________________)
For Hackers Using Scala
This will be the outline of your function body (fill in the blank portion marked by underscores):
def f(arr:List[Int]):List[Int] = __________________
For Hackers Using Haskell
This will be the outline of your function body (fill in the blank portion marked by underscores):
f arr = ___________________
For Hackers Using other Languages
You have to read input from standard input and write output to standard output. Please follow the input/output format mentioned above.
NOTE: You only need to submit the code above after filling in the blanks appropriately. The input and output section will be handled by us. The focus is on writing the correct function.
Solution – Update List – HackerRank Solution
Scala
def f(arr: List[Int]): List[Int] = arr.map(math.abs)
Note: This problem (Update List) is generated by HackerRank but the solution is provided by CodingBroz. This tutorial is only for Educational and Learning purpose.