• Challenges
  • Interview Questions
  • Easy Difficulty

    First ReverseNot Completed

    Solutions: 41546 | Step-by-step solution | Challenge discussion

    First FactorialNot Completed

    Solutions: 29375 | Step-by-step solution | Challenge discussion

    Longest WordNot Completed

    Solutions: 25244 | Step-by-step solution | Challenge discussion

    Letter ChangesNot Completed

    Solutions: 21245 | Step-by-step solution | Challenge discussion

    Simple AddingNot Completed

    Solutions: 19788 | Step-by-step solution | Challenge discussion

    Letter CapitalizeNot Completed

    Solutions: 16621 | Step-by-step solution | Challenge discussion

    Simple SymbolsNot Completed

    Solutions: 14022 | Step-by-step solution | Challenge discussion

    Check NumsNot Completed

    Solutions: 16565 | Step-by-step solution | Challenge discussion

    Time ConvertNot Completed

    Solutions: 12142 | Step-by-step solution | Challenge discussion

    Alphabet SoupNot Completed

    Solutions: 11535 | Step-by-step solution | Challenge discussion

    AB CheckNot Completed

    Solutions: 11168 | Step-by-step solution | Challenge discussion

    Vowel CountNot Completed

    Solutions: 11381 | Step-by-step solution | Challenge discussion

    Word CountNot Completed

    Solutions: 10924 | Step-by-step solution | Challenge discussion

    Ex OhNot Completed

    Solutions: 10022 | Step-by-step solution | Challenge discussion

    PalindromeNot Completed

    Solutions: 11438 | Step-by-step solution | Challenge discussion

    Arith GeoNot Completed

    Solutions: 8422 | Step-by-step solution | Challenge discussion

    Array Addition INot Completed

    Solutions: 4944 | Step-by-step solution | Challenge discussion

    Letter Count INot Completed

    Solutions: 4435 | Step-by-step solution | Challenge discussion

    Second GreatLowNot Completed

    Solutions: 7874 | Step-by-step solution | Challenge discussion

    Division StringifiedNot Completed

    Solutions: 6066 | Step-by-step solution | Challenge discussion

    Counting Minutes INot Completed

    Solutions: 3574 | Step-by-step solution | Challenge discussion

    Mean ModeNot Completed

    Solutions: 4939 | Step-by-step solution | Challenge discussion

    Dash InsertNot Completed

    Solutions: 5319 | Step-by-step solution | Challenge discussion

    Swap CaseNot Completed

    Solutions: 5606 | Step-by-step solution | Challenge discussion

    Number AdditionNot Completed

    Solutions: 5217 | Step-by-step solution | Challenge discussion

    Third GreatestNot Completed

    Solutions: 4750 | Step-by-step solution | Challenge discussion

    Powers of TwoNot Completed

    Solutions: 5277 | Step-by-step solution | Challenge discussion

    Additive PersistenceNot Completed

    Solutions: 3357 | Step-by-step solution | Challenge discussion

    Multiplicative PersistenceNot Completed

    Solutions: 2714 | Step-by-step solution | Challenge discussion

    Off Line MinimumNot Completed

    Solutions: 3478 | Step-by-step solution | Challenge discussion

    Changing SequenceNot Completed

    Solutions: 276 | Step-by-step solution | Challenge discussion

    Overlapping RangesNot Completed

    Solutions: 187 | Step-by-step solution | Challenge discussion

    SuperincreasingNot Completed

    Solutions: 69 | Step-by-step solution | Challenge discussion

    Hamming DistanceNot Completed

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

    Medium Difficulty

    Prime TimeNot Completed

    Solutions: 9395 | Step-by-step solution | Challenge discussion

    Run Length Not Completed

    Solutions: 6240 | Step-by-step solution | Challenge discussion

    Prime MoverNot Completed

    Solutions: 5860 | Step-by-step solution | Challenge discussion

    Palindrome TwoNot Completed

    Solutions: 5289 | Step-by-step solution | Challenge discussion

    DivisionNot Completed

    Solutions: 4692 | Step-by-step solution | Challenge discussion

    String ScrambleNot Completed

    Solutions: 4998 | Step-by-step solution | Challenge discussion

    Arith Geo IINot Completed

    Solutions: 3694 | Step-by-step solution | Challenge discussion

    Array AdditionNot Completed

    Solutions: 2975 | Step-by-step solution | Challenge discussion

    Binary ConverterNot Completed

    Solutions: 3608 | Step-by-step solution | Challenge discussion

    Letter CountNot Completed

    Solutions: 3031 | Step-by-step solution | Challenge discussion

    Caesar CipherNot Completed

    Solutions: 3611 | Step-by-step solution | Challenge discussion

    Simple ModeNot Completed

    Solutions: 3386 | Step-by-step solution | Challenge discussion

    ConsecutiveNot Completed

    Solutions: 2987 | Step-by-step solution | Challenge discussion

    Formatted DivisionNot Completed

    Solutions: 2579 | Step-by-step solution | Challenge discussion

    Counting MinutesNot Completed

    Solutions: 1998 | Step-by-step solution | Challenge discussion

    Permutation StepNot Completed

    Solutions: 2155 | Step-by-step solution | Challenge discussion

    Prime CheckerNot Completed

    Solutions: 1687 | Step-by-step solution | Challenge discussion

    Dash Insert IINot Completed

    Solutions: 3559 | Step-by-step solution | Challenge discussion

    Swap IINot Completed

    Solutions: 1860 | Step-by-step solution | Challenge discussion

    Number SearchNot Completed

    Solutions: 2233 | Step-by-step solution | Challenge discussion

    Triple DoubleNot Completed

    Solutions: 2052 | Step-by-step solution | Challenge discussion

    Bracket MatcherNot Completed

    Solutions: 1937 | Step-by-step solution | Challenge discussion

    String ReductionNot Completed

    Solutions: 1619 | Step-by-step solution | Challenge discussion

    ThreeFive MultiplesNot Completed

    Solutions: 1974 | Step-by-step solution | Challenge discussion

    Coin DeterminerNot Completed

    Solutions: 1590 | Step-by-step solution | Challenge discussion

    Fibonacci CheckerNot Completed

    Solutions: 1901 | Step-by-step solution | Challenge discussion

    Multiple BracketsNot Completed

    Solutions: 1511 | Step-by-step solution | Challenge discussion

    Most Free TimeNot Completed

    Solutions: 957 | Step-by-step solution | Challenge discussion

    Overlapping RectanglesNot Completed

    Solutions: 1102 | Step-by-step solution | Challenge discussion

    Look Say SequenceNot Completed

    Solutions: 905 | Step-by-step solution | Challenge discussion

    Distinct ListNot Completed

    Solutions: 1753 | Step-by-step solution | Challenge discussion

    Number EncodingNot Completed

    Solutions: 965 | Step-by-step solution | Challenge discussion

    Stock PickerNot Completed

    Solutions: 74 | Step-by-step solution | Challenge discussion

    Hard Difficulty

    Sudoku Quadrant CheckerNot Completed

    Solutions: 54 | Step-by-step solution | Challenge discussion

    Optimal AssignmentsNot Completed

    Solutions: 448 | Step-by-step solution | Challenge discussion

    Transitivity RelationsNot Completed

    Solutions: 377 | Step-by-step solution | Challenge discussion

    Shortest PathNot Completed

    Solutions: 781 | Step-by-step solution | Challenge discussion

    Polynomial ExpansionNot Completed

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

    CalculatorNot Completed

    Solutions: 883 | Step-by-step solution | Challenge discussion

    Pattern ChaserNot Completed

    Solutions: 483 | Step-by-step solution | Challenge discussion

    Weighted PathNot Completed

    Solutions: 270 | Step-by-step solution | Challenge discussion

    RREF MatrixNot Completed

    Solutions: 88 | Step-by-step solution | Challenge discussion

    Intersecting LinesNot Completed

    Solutions: 429 | Step-by-step solution | Challenge discussion

    Kaprekars ConstantNot Completed

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

    Hamiltonian PathNot Completed

    Solutions: 103 | Step-by-step solution | Challenge discussion

    Step WalkingNot Completed

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

    Gas StationNot Completed

    Solutions: 430 | Step-by-step solution | Challenge discussion

    Symmetric MatrixNot Completed

    Solutions: 305 | Step-by-step solution | Challenge discussion

    Switch SortNot Completed

    Solutions: 218 | Step-by-step solution | Challenge discussion

    Matrix DeterminantNot Completed

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

    Queen CheckNot Completed

    Solutions: 365 | Step-by-step solution | Challenge discussion

    Noughts DeterminerNot Completed

    Solutions: 328 | Step-by-step solution | Challenge discussion

    Blackjack HighestNot Completed

    Solutions: 405 | Step-by-step solution | Challenge discussion

    Alphabet Run EncryptionNot Completed

    Solutions: 205 | Step-by-step solution | Challenge discussion

    Vertex CoveringNot Completed

    Solutions: 110 | Step-by-step solution | Challenge discussion

    Knight JumpsNot Completed

    Solutions: 456 | Step-by-step solution | Challenge discussion

    Farthest NodesNot Completed

    Solutions: 119 | Step-by-step solution | Challenge discussion

    Line OrderingNot Completed

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

    Quick KnightNot Completed

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

    Square FiguresNot Completed

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

    Connect Four WinnerNot Completed

    Solutions: 40 | Step-by-step solution | Challenge discussion

    Array JumpingNot Completed

    Solutions: 27 | Step-by-step solution | Challenge discussion

    Matrix BorderNot Completed

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

    Roman Numeral ReductionNot Completed

    Solutions: 32 | Step-by-step solution | Challenge discussion

    Parallel SumsNot Completed

    Solutions: 39 | Step-by-step solution | Challenge discussion

    LCSNot Completed

    Solutions: 20 | Step-by-step solution | Challenge discussion

    Nim WinnerNot Completed

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

    Pascals TriangleNot Completed

    Solutions: 43 | Step-by-step solution | Challenge discussion

    Reverse Polish NotationNot Completed

    Solutions: 157 | Step-by-step solution | Challenge discussion

    Max Heap CheckerNot Completed

    Solutions: 28 | Step-by-step solution | Challenge discussion

    Chessboard TravelingNot Completed

    Solutions: 22 | Step-by-step solution | Challenge discussion

    Matching CouplesNot Completed

    Solutions: 48 | Step-by-step solution | Challenge discussion

    Approaching FibonacciNot Completed

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

    Simple SATNot Completed

    Solutions: 16 | Step-by-step solution | Challenge discussion

    Array CouplesNot Completed

    Solutions: 23 | Step-by-step solution | Challenge discussion

    Bracket CombinationsNot Completed

    Solutions: 15 | Step-by-step solution | Challenge discussion

    Counting AnagramsNot Completed

    Solutions: 6 | Step-by-step solution | Challenge discussion

    Array RotationNot Completed

    Solutions: 13 | Step-by-step solution | Challenge discussion