The folder includes solutions to puzzles and quizzes from the website CodeSignal. https://codesignal.com

NOTE : Codesignal has changed the format of its challenges, hence you will not be able to find these challenges in the current platform.

• 🟢 : Step-by-step explanation of the solution has been provided, including the description of the exercise.
• 🔴 : Step-by-step explanation of the solution has not been provided including the description of the exercise.

1. 🟢 Add.py - Add two numbers.
2. 🟢 centuryFromYear.py - Given a year, return the century it is in.
3. 🟢 checkPalindrome.py - Given the string, check if it is a palindrome.
4. 🟢 adjacentElementsProduct.py - Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
5. 🟢 shapeArea.py - An n-interesting polygon has been defined. Your task is to find the area of a polygon for a given n.
6. 🟢 makeArrayConsecutive2.py - Arrange an array of statues, from smallest to largest, finding any additional statues that are missing to have a difference of 1 from the previous.
7. 🟢 almostIncreasingSequence.py - Given a sequence of integers as an array, determine whether it is possible to obtain a strictly increasing sequence by removing no more than one element from the array.
8. 🟢 matrixElementsSum - Return total sum of matrix elements for rectangular matrix of integers.
9. 🟢 allLongestStrings.py - Given an array of strings, return another array containing all of its longest strings.
10. 🟢 commonCharacterCount.py - Given two strings, find the number of common characters between them.
11. 🟢 isLucky.py - Given a ticket number n, determine if it's lucky or not.
12. 🟢 sortByHeight.py - Your task is to rearrange the people by their heights in a non-descending order
13. 🟢 reverseInParentheses.py - Write a function that reverses characters in (possibly nested) parentheses in the input string.
14. 🟢 alternatingSums.py - Return an array of two integers, the weight totals of Team 1 & Team 2.
15. 🔴 addBorder.py
16. 🔴 areSimilar.py
17. 🔴 arrayChange.py
18. 🔴 palindromeRearranging.py
19. 🔴 areEquallyStrong.py
20. 🔴 arrayMaximalAdjacentDifference.py
21. 🔴 isIPv4Address.py
22. 🔴 avoidObstacles.py
23. 🔴 boxBlur.py
24. 🔴 minesweeper.py
25. 🔴 arrayReplace.py
26. 🔴 evenDigitsOnly.py
27. 🔴 variableName.py
28. 🔴 alphabeticShift.py
29. 🔴 chessBoardCellColor.py
30. 🔴 circleOfNumbers.py
31. 🔴 depositProfit.py
32. 🔴 absoluteValuesSumMinimization.py
33. 🔴 stringsRearrangement.py
34. 🔴 extractEachKth.py
35. 🔴 firstDigit.py
36. 🔴 differentSymbolsNaive.py
37. 🔴 arrayMaxConsecutiveSum.py
38. 🔴 growingPlant.py
39. 🔴 knapsackLight.py
40. 🔴 longestDigitsPrefix.py
41. 🔴 digitDegree.py
42. 🔴 bishopAndPawn.py
43. 🔴 isBeautifulString.py
44. 🔴 findEmailDomain.py
45. 🔴 buildPalindrome.py
46. 🔴 electionWinners.py
47. 🔴 isMAC48Address.py
48. 🔴 isDigit.py
49. 🔴 lineEncoding.py
50. 🔴 chessKnight.py
51. 🔴 deleteDigit.py
52. 🔴 longestWord.py
53. 🔴 validTime.py
54. 🔴 sumUpNumbers.py
55. 🔴 differentSquares.py
56. 🔴 digitsProduct.py
57. 🔴 fileNaming.py
58. 🔴 messageFromBinaryCode.py
59. 🔴 spiralNumbers.py
60. 🔴 Sudoku.py