4hmetuyar / codesignal

Samples and descriptions made on codesignal.

Codesignal Simple Example

1. Add

Write a function that returns the sum of two numbers.

Example :

• For param1 = 1 and param2 = 2, the output should be add(param1, param2) = 3.

Solution :

function add(param, ...otherParams) {    
    return param + (otherParams.length ? add(...otherParams) : 0);
}

2. CenturyFromYear

Given a year, return the century it is in. The first century spans from the year 1 up to and including the year 100, the second - from the year 101 up to and including the year 200, etc.

Example :

• For year = 1905, the output should be centuryFromYear(year) = 20;
• For year = 1700, the output should be centuryFromYear(year) = 17.

Solution :

function centuryFromYear(year) {
return Math.floor((year-1)/100) + 1;
}

3. CheckPalindrome

Given the string, check if it is a palindrome. (A palindrome is a string that reads the same left-to-right and right-to-left.)

Example :

• For inputString = "aabaa", the output should be checkPalindrome(inputString) = true;
• For inputString = "abac", the output should be checkPalindrome(inputString) = false;
• For inputString = "a", the output should be checkPalindrome(inputString) = true.

Solution :

function checkPalindrome(inputString) {
    return inputString == inputString.split('').reverse().join('');
}

4. AdjacentElementsProduct

Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.

Example :

• For inputArray = [3, 6, -2, -5, 7, 3], the output should be adjacentElementsProduct(inputArray) = 21.

7 and 3 produce the largest product.

Solution :

function adjacentElementsProduct(inputArray) {
 var cb = Number.NEGATIVE_INFINITY;
    for(var i=0;i<inputArray.length-1;i++){
        if(inputArray[i]*inputArray[i+1] > cb){
          cb = inputArray[i]*inputArray[i+1];
        }
    }
  return cb;
}

5. ShapeArea

Below we will define an n-interesting polygon. Your task is to find the area of a polygon for a given n.

A 1-interesting polygon is just a square with a side of length 1. An n-interesting polygon is obtained by taking the n - 1-interesting polygon and appending 1-interesting polygons to its rim, side by side.

Example :

• For n = 2, the output should be shapeArea(n) = 5;
• For n = 3, the output should be shapeArea(n) = 13.

Solution :

function shapeArea(n) {
    return 2*Math.pow(n,2) - 2*n +1;
}

codesignal's Issues

Box Blur issues

Last night you partied a little too hard. Now there's a black and white photo of you that's about to go viral! You can't let this ruin your reputation, so you want to apply the box blur algorithm to the photo to hide its content.