• Challenges
  • Interview Questions
  • Easy Difficulty

    First ReverseNot Completed

    Solutions: 42876 | Step-by-step solution | Challenge discussion

    First FactorialNot Completed

    Solutions: 30240 | Step-by-step solution | Challenge discussion

    Longest WordNot Completed

    Solutions: 25974 | Step-by-step solution | Challenge discussion

    Letter ChangesNot Completed

    Solutions: 22041 | Step-by-step solution | Challenge discussion

    Simple AddingNot Completed

    Solutions: 20394 | Step-by-step solution | Challenge discussion

    Letter CapitalizeNot Completed

    Solutions: 17192 | Step-by-step solution | Challenge discussion

    Simple SymbolsNot Completed

    Solutions: 14239 | Step-by-step solution | Challenge discussion

    Check NumsNot Completed

    Solutions: 16736 | Step-by-step solution | Challenge discussion

    Time ConvertNot Completed

    Solutions: 12289 | Step-by-step solution | Challenge discussion

    Alphabet SoupNot Completed

    Solutions: 11693 | Step-by-step solution | Challenge discussion

    AB CheckNot Completed

    Solutions: 11365 | Step-by-step solution | Challenge discussion

    Vowel CountNot Completed

    Solutions: 11519 | Step-by-step solution | Challenge discussion

    Word CountNot Completed

    Solutions: 11044 | Step-by-step solution | Challenge discussion

    Ex OhNot Completed

    Solutions: 10144 | Step-by-step solution | Challenge discussion

    PalindromeNot Completed

    Solutions: 11593 | Step-by-step solution | Challenge discussion

    Arith GeoNot Completed

    Solutions: 8576 | Step-by-step solution | Challenge discussion

    Array Addition INot Completed

    Solutions: 5068 | Step-by-step solution | Challenge discussion

    Letter Count INot Completed

    Solutions: 4522 | Step-by-step solution | Challenge discussion

    Second GreatLowNot Completed

    Solutions: 8023 | Step-by-step solution | Challenge discussion

    Division StringifiedNot Completed

    Solutions: 6181 | Step-by-step solution | Challenge discussion

    Counting Minutes INot Completed

    Solutions: 3636 | Step-by-step solution | Challenge discussion

    Mean ModeNot Completed

    Solutions: 5012 | Step-by-step solution | Challenge discussion

    Dash InsertNot Completed

    Solutions: 5406 | Step-by-step solution | Challenge discussion

    Swap CaseNot Completed

    Solutions: 5675 | Step-by-step solution | Challenge discussion

    Number AdditionNot Completed

    Solutions: 5307 | Step-by-step solution | Challenge discussion

    Third GreatestNot Completed

    Solutions: 4836 | Step-by-step solution | Challenge discussion

    Powers of TwoNot Completed

    Solutions: 5379 | Step-by-step solution | Challenge discussion

    Additive PersistenceNot Completed

    Solutions: 3440 | Step-by-step solution | Challenge discussion

    Multiplicative PersistenceNot Completed

    Solutions: 2773 | Step-by-step solution | Challenge discussion

    Off Line MinimumNot Completed

    Solutions: 3565 | Step-by-step solution | Challenge discussion

    Changing SequenceNot Completed

    Solutions: 353 | Step-by-step solution | Challenge discussion

    Overlapping RangesNot Completed

    Solutions: 259 | Step-by-step solution | Challenge discussion

    SuperincreasingNot Completed

    Solutions: 173 | Step-by-step solution | Challenge discussion

    Hamming DistanceNot Completed

    Solutions: 122 | Step-by-step solution | Challenge discussion

    Rectangle AreaNot Completed

    Solutions: 115 | Step-by-step solution | Challenge discussion

    Bitwise OneNot Completed

    Solutions: 86 | Step-by-step solution | Challenge discussion

    Medium Difficulty

    Prime TimeNot Completed

    Solutions: 9460 | Step-by-step solution | Challenge discussion

    Run Length Not Completed

    Solutions: 6307 | Step-by-step solution | Challenge discussion

    Prime MoverNot Completed

    Solutions: 5918 | Step-by-step solution | Challenge discussion

    Palindrome TwoNot Completed

    Solutions: 5356 | Step-by-step solution | Challenge discussion

    DivisionNot Completed

    Solutions: 4753 | Step-by-step solution | Challenge discussion

    String ScrambleNot Completed

    Solutions: 5086 | Step-by-step solution | Challenge discussion

    Arith Geo IINot Completed

    Solutions: 3743 | Step-by-step solution | Challenge discussion

    Array AdditionNot Completed

    Solutions: 3011 | Step-by-step solution | Challenge discussion

    Binary ConverterNot Completed

    Solutions: 3641 | Step-by-step solution | Challenge discussion

    Letter CountNot Completed

    Solutions: 3070 | Step-by-step solution | Challenge discussion

    Caesar CipherNot Completed

    Solutions: 3655 | Step-by-step solution | Challenge discussion

    Simple ModeNot Completed

    Solutions: 3428 | Step-by-step solution | Challenge discussion

    ConsecutiveNot Completed

    Solutions: 3027 | Step-by-step solution | Challenge discussion

    Formatted DivisionNot Completed

    Solutions: 2622 | Step-by-step solution | Challenge discussion

    Counting MinutesNot Completed

    Solutions: 2024 | Step-by-step solution | Challenge discussion

    Permutation StepNot Completed

    Solutions: 2194 | Step-by-step solution | Challenge discussion

    Prime CheckerNot Completed

    Solutions: 1712 | Step-by-step solution | Challenge discussion

    Dash Insert IINot Completed

    Solutions: 3616 | Step-by-step solution | Challenge discussion

    Swap IINot Completed

    Solutions: 1882 | Step-by-step solution | Challenge discussion

    Number SearchNot Completed

    Solutions: 2270 | Step-by-step solution | Challenge discussion

    Triple DoubleNot Completed

    Solutions: 2089 | Step-by-step solution | Challenge discussion

    Bracket MatcherNot Completed

    Solutions: 1968 | Step-by-step solution | Challenge discussion

    String ReductionNot Completed

    Solutions: 1645 | Step-by-step solution | Challenge discussion

    ThreeFive MultiplesNot Completed

    Solutions: 2005 | Step-by-step solution | Challenge discussion

    Coin DeterminerNot Completed

    Solutions: 1601 | Step-by-step solution | Challenge discussion

    Fibonacci CheckerNot Completed

    Solutions: 1927 | Step-by-step solution | Challenge discussion

    Multiple BracketsNot Completed

    Solutions: 1537 | Step-by-step solution | Challenge discussion

    Most Free TimeNot Completed

    Solutions: 970 | Step-by-step solution | Challenge discussion

    Overlapping RectanglesNot Completed

    Solutions: 1121 | Step-by-step solution | Challenge discussion

    Look Say SequenceNot Completed

    Solutions: 924 | Step-by-step solution | Challenge discussion

    Distinct ListNot Completed

    Solutions: 1780 | Step-by-step solution | Challenge discussion

    Number EncodingNot Completed

    Solutions: 983 | Step-by-step solution | Challenge discussion

    Stock PickerNot Completed

    Solutions: 101 | Step-by-step solution | Challenge discussion

    Hard Difficulty

    Sudoku Quadrant CheckerNot Completed

    Solutions: 59 | Step-by-step solution | Challenge discussion

    Optimal AssignmentsNot Completed

    Solutions: 449 | Step-by-step solution | Challenge discussion

    Transitivity RelationsNot Completed

    Solutions: 378 | Step-by-step solution | Challenge discussion

    Shortest PathNot Completed

    Solutions: 782 | Step-by-step solution | Challenge discussion

    Polynomial ExpansionNot Completed

    Solutions: 233 | Step-by-step solution | Challenge discussion

    CalculatorNot Completed

    Solutions: 891 | Step-by-step solution | Challenge discussion

    Pattern ChaserNot Completed

    Solutions: 494 | Step-by-step solution | Challenge discussion

    Weighted PathNot Completed

    Solutions: 273 | Step-by-step solution | Challenge discussion

    RREF MatrixNot Completed

    Solutions: 94 | Step-by-step solution | Challenge discussion

    Intersecting LinesNot Completed

    Solutions: 437 | Step-by-step solution | Challenge discussion

    Kaprekars ConstantNot Completed

    Solutions: 46 | Step-by-step solution | Challenge discussion

    Hamiltonian PathNot Completed

    Solutions: 105 | Step-by-step solution | Challenge discussion

    Step WalkingNot Completed

    Solutions: 36 | Step-by-step solution | Challenge discussion

    Gas StationNot Completed

    Solutions: 432 | Step-by-step solution | Challenge discussion

    Symmetric MatrixNot Completed

    Solutions: 309 | Step-by-step solution | Challenge discussion

    Switch SortNot Completed

    Solutions: 222 | Step-by-step solution | Challenge discussion

    Matrix DeterminantNot Completed

    Solutions: 225 | Step-by-step solution | Challenge discussion

    Queen CheckNot Completed

    Solutions: 371 | Step-by-step solution | Challenge discussion

    Noughts DeterminerNot Completed

    Solutions: 330 | Step-by-step solution | Challenge discussion

    Blackjack HighestNot Completed

    Solutions: 407 | Step-by-step solution | Challenge discussion

    Alphabet Run EncryptionNot Completed

    Solutions: 216 | Step-by-step solution | Challenge discussion

    Vertex CoveringNot Completed

    Solutions: 113 | Step-by-step solution | Challenge discussion

    Knight JumpsNot Completed

    Solutions: 460 | Step-by-step solution | Challenge discussion

    Farthest NodesNot Completed

    Solutions: 124 | Step-by-step solution | Challenge discussion

    Line OrderingNot Completed

    Solutions: 31 | Step-by-step solution | Challenge discussion

    Quick KnightNot Completed

    Solutions: 30 | Step-by-step solution | Challenge discussion

    Square FiguresNot Completed

    Solutions: 56 | Step-by-step solution | Challenge discussion

    Connect Four WinnerNot Completed

    Solutions: 49 | Step-by-step solution | Challenge discussion

    Array JumpingNot Completed

    Solutions: 38 | Step-by-step solution | Challenge discussion

    Matrix BorderNot Completed

    Solutions: 35 | Step-by-step solution | Challenge discussion

    Roman Numeral ReductionNot Completed

    Solutions: 38 | Step-by-step solution | Challenge discussion

    Parallel SumsNot Completed

    Solutions: 49 | Step-by-step solution | Challenge discussion

    LCSNot Completed

    Solutions: 24 | Step-by-step solution | Challenge discussion

    Nim WinnerNot Completed

    Solutions: 18 | Step-by-step solution | Challenge discussion

    Pascals TriangleNot Completed

    Solutions: 44 | Step-by-step solution | Challenge discussion

    Reverse Polish NotationNot Completed

    Solutions: 160 | Step-by-step solution | Challenge discussion

    Max Heap CheckerNot Completed

    Solutions: 30 | Step-by-step solution | Challenge discussion

    Chessboard TravelingNot Completed

    Solutions: 25 | Step-by-step solution | Challenge discussion

    Matching CouplesNot Completed

    Solutions: 51 | Step-by-step solution | Challenge discussion

    Approaching FibonacciNot Completed

    Solutions: 50 | Step-by-step solution | Challenge discussion

    Simple SATNot Completed

    Solutions: 19 | Step-by-step solution | Challenge discussion

    Array CouplesNot Completed

    Solutions: 26 | Step-by-step solution | Challenge discussion

    Bracket CombinationsNot Completed

    Solutions: 30 | Step-by-step solution | Challenge discussion

    Counting AnagramsNot Completed

    Solutions: 12 | Step-by-step solution | Challenge discussion

    Array RotationNot Completed

    Solutions: 17 | Step-by-step solution | Challenge discussion