Nicknyr

/*
Given a string, enclose it in round brackets.

Example

For inputString = "abacaba", the output should be
encloseInBrackets(inputString) = "(abacaba)".
*/

function encloseInBrackets(inputString) {

Nicknyr

/*
Ratiorg got statues of different sizes as a present from CodeMaster for his birthday, each statue having an non-negative integer size. Since he likes to make things perfect, he wants to arrange them from smallest to largest so that each statue will be bigger than the previous one exactly by 1. He may need some additional statues to be able to accomplish that. Help him figure out the minimum number of additional statues needed.

Example

For statues = [6, 2, 3, 8], the output should be
makeArrayConsecutive2(statues) = 3.

Ratiorg needs statues of sizes 4, 5 and 7.
*/

Nicknyr

/*
We define the middle of the array arr as follows:

if arr contains an odd number of elements, its middle is the element whose index number is the same when counting from the beginning of the array and from its end;
if arr contains an even number of elements, its middle is the sum of the two elements whose index numbers when counting from the beginning and from the end of the array differ by one.
Given array arr, your task is to find its middle, and, if it consists of two elements, replace those elements with the value of middle. Return the resulting array as the answer.

Example

For arr = [7, 2, 2, 5, 10, 7], the output should be

Nicknyr

/*
We define the middle of the array arr as follows:

if arr contains an odd number of elements, its middle is the element whose index number is the same when counting from the beginning of the array and from its end;
if arr contains an even number of elements, its middle is the sum of the two elements whose index numbers when counting from the beginning and from the end of the array differ by one.
An array is called smooth if its first and its last elements are equal to one another and to the middle. Given an array arr, determine if it is smooth or not.

Example

For arr = [7, 2, 2, 5, 10, 7], the output should be

Nicknyr

/*
Remove a part of a given array between given 0-based indexes l and r (inclusive).

Example

For inputArray = [2, 3, 2, 3, 4, 5], l = 2, and r = 4, the output should be
removeArrayPart(inputArray, l, r) = [2, 3, 5].
*/

function removeArrayPart(inputArray, l, r) {

Nicknyr

/*
Given two arrays of integers a and b, obtain the array formed by the elements of a followed by the elements of b.

Example

For a = [2, 2, 1] and b = [10, 11], the output should be
concatenateArrays(a, b) = [2, 2, 1, 10, 11].
*/

function concatenateArrays(a, b) {

Nicknyr

/*

Reversing an array can be a tough task, especially for a novice programmer. Mary just started coding, so she would like to start with something basic at first. Instead of reversing the array entirely, she wants to swap just its first and last elements.

Given an array arr, swap its first and last elements and return the resulting array.

Example

For arr = [1, 2, 3, 4, 5], the output should be
firstReverseTry(arr) = [5, 2, 3, 4, 1].

Nicknyr

/*
Given an array of integers, replace all the occurrences of elemToReplace with substitutionElem.

Example

For inputArray = [1, 2, 1], elemToReplace = 1, and substitutionElem = 3, the output should be
arrayReplace(inputArray, elemToReplace, substitutionElem) = [3, 2, 3].

*/

Nicknyr

/*
Given an integer size, return array of length size filled with 1s.

Example

For size = 4, the output should be
createArray(size) = [1, 1, 1, 1].

*/

Nicknyr

/*
Determine if the given character is a digit or not.

Example

For symbol = '0', the output should be
isDigit(symbol) = true;
For symbol = '-', the output should be
isDigit(symbol) = false.
*/