<p align="center"> <a href="https://app.codesignal.com/profile/cassivellaunus" target="_blank"> <img height=150 src="https://codesignal.com/wp-content/uploads/2018/08/CS_logo_blue.png"> </a>

Welcome! In this repository you can find a collection of coding challenges from CodeSignal.

Solutions are written in Java and MySql.

Don't forget to click on the logo above and visit my profile!

If you want to join, follow this link.

Contents:

• Arcade
  • Intro
  • Databases
• Interview Practice
  • Data Structures

<u>Arcade</u>

Intro

| # | Challenge | Difficulty | Solution | | ---- | :----------------------------------------------------------- | :--------- | ------------------------------------------------------------ | | 1 | add | Easy | Solution | | 2 | centuryFromYear | Easy | Solution | | 3 | checkPalindrome | Easy | Solution | | 4 | adjacentElementsProduct | Easy | Solution | | 5 | shapeArea | Easy | Solution | | 6 | makeArrayConsecutive2 | Easy | Solution | | 7 | almostIncreasingSequence | Easy | Solution | | 8 | matrixElementsSum | Easy | Solution | | 9 | allLongestStrings | Easy | Solution | | 10 | commonCharacterCount | Easy | Solution | | 11 | isLucky | Easy | Solution | | 12 | sortByHeight | Easy | Solution | | 13 | reverseInParentheses | Medium | Solution | | 14 | alternatingSums | Easy | Solution | | 15 | addBorder | Easy | Solution | | 16 | areSimilar | Medium | Solution | | 17 | arrayChange | Easy | Solution | | 18 | palindromeRearranging | Medium | Solution | | 19 | areEquallyStrong | Easy | Solution | | 20 | arrayMaximalAdjacentDifference | Easy | Solution | | 21 | isIPv4Address | Medium | Solution | | 22 | avoidObstacles | Easy | Solution | | 23 | boxBlur | Medium | Solution | | 24 | minesweeper | Medium | Solution | | 25 | arrayReplace | Easy | Solution | | 26 | evenDigitsOnly | Easy | Solution | | 27 | variableName | Easy | Solution | | 28 | alphabeticShift | Easy | Solution | | 29 | chessBoardCellColor | Easy | Solution | | 30 | circleOfNumbers | Easy | Solution | | 31 | depositProfit | Medium | Solution | | 32 | absoluteValuesSumMinimization | Medium | Solution |

Databases

| # | Challenge | Difficulty | Solution | | ---- | --------- | ---------- | -------- | | | | | |

<u>Interview Practice</u>

Data Structures

| Topic | Challenge | Difficulty | Solution | | ------ | ------------------------------------------------------------ | ---------- | ------------------------------------------------------------ | | Arrays | firstDuplicate | Easy | Solution |