Skip to main content

Other programming challenges

Other programming challenges and problems from codesignal and leetcode sorted by first letter/number (did not find a better way to sort/group them 😊).

Some have multiple solutions with different approaches.

B - Beginner, I - Intermediate, A - Advanced

A
- I absoluteValuesSumMinimization
- I adaNumber
- B addBorder
- B addTwoDigits
- B addTwoNumbersList
- B additionWithoutCarrying
- B adjacentElementsProduct
- B allLongestStrings
- B almostIncreasingSequence
- B alphabetSubsequence
- B alphabeticShift
- I alphanumericLess
- B alternatingSums
- B appleBoxes
- B areEquallyStrong
- I areSimilar
- B arithmeticExpression
- B arrayChange
- I arrayConversion
- B arrayMaxConsecutiveSum
- B arrayMaximalAdjacentDifference
- I arrayPacking
- I arrayPreviousLess
- B avoidObstacles
- B arrayReplace
B
- B bishopAndPawn
- I boxBlur
- I buildPalindrome
C
- B candies
- B candles
- B centuryFromYear
- B characterParity
- B checkIfDoubleExists
- B checkPalindrome
- B chessBoardCellColor
- I chessKnight
- B cipher26
- B circleOfNumbers
- I combs
- B comfortableNumbers
- B commonCharacterCount
- B concatenateArrays
- I constructSquare
- B containsDuplicate
- B copyRandomList
- I countBlackCells
- I countRectangles
- B countSumOfTwoRepresentations2
- B createAnagram
- I crosswordFormation
D
- B decipher
- I deleteDigit
- I depositProfit
- B diStringMatch
- I differentRightmostBit
- I differentSquares
- B differentSymbolsNaive
- I digitDegree
- I digitsProduct
- B duplicateZeros
E
- I electionsWinners
- B equalDigitSum
- I equalPairOfBits
- B evenDigitsOnly
- B evenNumberDigits
- B extraNumber
- B extractEachKth
F
- I fileNaming
- B findDisappearedNumbers
- I findEmailDomain
- B findMaxConsecutiveOnes
- B firstDigit
- I firstDuplicate
- B firstReverseTry
- B flattenLinkedList
G
- B growingPlant
- B getIntersectionNode

H
- B hasCycle
- I higherVersion
- B houseNumbersSum
- B houseOfCats
- B htmlEndTagByStartTag
I
- B increaseNumberRoundness
- B integerToStringOfFixedWidth
- B inorderTraversal
- B invertTree
- I isBeautifulString
- B isCaseInsensitivePalindrome
- B isDigit
- B isInfiniteProcess
- I isIPV4Address
- B isLucky
- I isMAC48Address
- B isPalindrome
- B isPalindromeLinkedList
- B isPower
- B isSmooth
- I isSubstitutionCipher
- I isSumOfConsecutive2
- B isTandemRepeat
- I isUnstablePair
J
K
- B killKthBit
- B knapsackLight
L
- B largestNumber
- A largestRectangleArea
- B lateRide
- B leastFactorial
- B levelorderTraversal
- I lineEncoding
- B lineUp
- B longestDigitsPrefix
- B longestWord
M
- B magicalWell
- B makeArrayConsecutive2
- B matrixElementsSum
- B maxMultiple
- B maxProfit2
- B merge
- B maxDepth
- B mergeTrees
- B mergeTwoLists
- I messageFromBinaryCode
- B metroCard
- I mineSweeper
- I minimalNumberOfCoins
- B mirrorBits
- I mostFrequentDigitSum
- B moveZeros
N
- B newNumeralSystem
- I numDecodings
- I numIslands
- I numberOfClans
- B numbersGrouping
O
- B oddEvenList
P
- I pagesNumberingWithInk
- I pairOfShoes
- I palindromeRearranging
- B pascalsTriangle
- B phoneCall
- B postorder
- B postorderTraversal
- B preorder
- B preorderTraversal
- B properNounCorrection
Q
R
- B rangeBitCount
- B rangeBitCount copy
- B reachNextLevel
- I rectangleRotation
- B reflectString
- B removeArrayPart
- B removeDuplicates
- B removeElements
- B removeNthFromEndOfOList
- B removeThreeDuplicates
- B replaceElements
- B replaceMiddle
- B replaceSequence
- B reverse
- I reverseInParentheses
- B reverseList
- B rotateArray
- B rotateList
- B rounders
S
- B seatsInTheater
- B secondRightmostZeroBit
- B shapeArea
- B singleNumber
- B sortArrayByParity
- B sortByHeight
- B sortedSquares
- I spiralNumbers
- I squareDigitsSequence
- B stolenLunch
- I stringsConstruction
- I stringsRearrangement
- I sudoku
- I sumUpNumbers
- B swapAdjacentBits
- I switchLights
T
- B tennisSet
- B thirdMax
- I threeSplit
- I timedReading
- B twoSum
- B twoSumOrdered
U
V
- B validTime
- B validMountainArray
- B variableName
W

B weakNumbers
B willYou

X
Y
Z

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z