## Hackerrank – String Mingling

Hackerrank – Problem Statement A description of the problem can be found on Hackerrank. Solution Iterate through one of the strings and concatenate each actual character. I created solution in: Scala All solutions are also available on my GitHub. Scala

## Hackerrank – Area Under Curves and Volume of Revolving a Curve

Hackerrank – Problem Statement A description of the problem can be found on Hackerrank. Solution function f is an applied algebraic expression to x as in problem description function area is area of the cycle (\$\$\Pi r^2\$\$) with center 0 and radius value of function(x) function summation is applied once for function f and one […]

## Hackerrank – Cut the sticks

Hackerrank – Problem Statement A description of the problem can be found on Hackerrank. Solution Until the sticks array is empty: print the length of sticks array sort the array get the minimum value as first element of the array cut the array filtering only values greater than minimum I created solution in: Scala Java […]

## Hackerrank – Sherlock and Squares

Hackerrank – Problem Statement A description of the problem can be found on Hackerrank. Solution We have to prevent timeout, because there is big upper constraint. For a given numbers a and b we can find out all square numbers with formula:     . There is a special case when a and b are […]

## Hackerrank – Modified Kaprekar Numbers

Hackerrank – Problem Statement A description of the problem can be found on Hackerrank. Solution Iterate from p to q and check if actual number Kaprekar number (the addition of 2 parts of squared number is equal to actual number) I created solution in: Scala Java JavaScript Ruby All solutions are also available on my […]

## Hackerrank – Angry Professor

Hackerrank – Problem Statement A description of the problem can be found on Hackerrank. Solution Count all students which come before starting a class (their arrival time is lower or equal to 0). Check if the count of the students is lower than cancellation threshold. I created solution in: Scala Java JavaScript Ruby All solutions […]

## Hackerrank – Java Strings Introduction

Hackerrank – Problem Statement A description of the problem can be found on Hackerrank. Solution I created solution in: Java All solutions are also available on my GitHub. Java

## Hackerrank – Lisa’s Workbook

Hackerrank – Problem Statement A description of the problem can be found on Hackerrank. Solution Take all problems for each chapter. Fill the pages according to rules – each page contains only k problems, or less if chapter ends. Start counting chapter problems from 1. Check if page contains problem with same number. I created […]

## Hackerrank – Lambda Calculi – March 2016

Hackerrank Contest I participated in an another programming contest organized by Hackerrank named Lambda Calculi – March 2016. The contest hosts seven challenges ranging from some basic functional programming concepts to some harder algorithmic problems I was able to solve 3 of 7 challenges and earned full points: Functions Or Not? Compute the Perimeter of […]