• Challenges
  • Interview Questions
  • Easy Difficulty

    First ReverseNot Completed

    Solutions: 45608 | Step-by-step solution | Challenge discussion

    First FactorialNot Completed

    Solutions: 32325 | Step-by-step solution | Challenge discussion

    Longest WordNot Completed

    Solutions: 27406 | Step-by-step solution | Challenge discussion

    Letter ChangesNot Completed

    Solutions: 23632 | Step-by-step solution | Challenge discussion

    Simple AddingNot Completed

    Solutions: 21689 | Step-by-step solution | Challenge discussion

    Letter CapitalizeNot Completed

    Solutions: 18351 | Step-by-step solution | Challenge discussion

    Simple SymbolsNot Completed

    Solutions: 14637 | Step-by-step solution | Challenge discussion

    Check NumsNot Completed

    Solutions: 17084 | Step-by-step solution | Challenge discussion

    Time ConvertNot Completed

    Solutions: 12620 | Step-by-step solution | Challenge discussion

    Alphabet SoupNot Completed

    Solutions: 12020 | Step-by-step solution | Challenge discussion

    AB CheckNot Completed

    Solutions: 11814 | Step-by-step solution | Challenge discussion

    Vowel CountNot Completed

    Solutions: 11857 | Step-by-step solution | Challenge discussion

    Word CountNot Completed

    Solutions: 11345 | Step-by-step solution | Challenge discussion

    Ex OhNot Completed

    Solutions: 10495 | Step-by-step solution | Challenge discussion

    PalindromeNot Completed

    Solutions: 11969 | Step-by-step solution | Challenge discussion

    Arith GeoNot Completed

    Solutions: 8991 | Step-by-step solution | Challenge discussion

    Array Addition INot Completed

    Solutions: 5327 | Step-by-step solution | Challenge discussion

    Letter Count INot Completed

    Solutions: 4752 | Step-by-step solution | Challenge discussion

    Second GreatLowNot Completed

    Solutions: 8427 | Step-by-step solution | Challenge discussion

    Division StringifiedNot Completed

    Solutions: 6443 | Step-by-step solution | Challenge discussion

    Counting Minutes INot Completed

    Solutions: 3800 | Step-by-step solution | Challenge discussion

    Mean ModeNot Completed

    Solutions: 5180 | Step-by-step solution | Challenge discussion

    Dash InsertNot Completed

    Solutions: 5614 | Step-by-step solution | Challenge discussion

    Swap CaseNot Completed

    Solutions: 5842 | Step-by-step solution | Challenge discussion

    Number AdditionNot Completed

    Solutions: 5484 | Step-by-step solution | Challenge discussion

    Third GreatestNot Completed

    Solutions: 5017 | Step-by-step solution | Challenge discussion

    Powers of TwoNot Completed

    Solutions: 5590 | Step-by-step solution | Challenge discussion

    Additive PersistenceNot Completed

    Solutions: 3601 | Step-by-step solution | Challenge discussion

    Multiplicative PersistenceNot Completed

    Solutions: 2909 | Step-by-step solution | Challenge discussion

    Off Line MinimumNot Completed

    Solutions: 3747 | Step-by-step solution | Challenge discussion

    Changing SequenceNot Completed

    Solutions: 496 | Step-by-step solution | Challenge discussion

    Overlapping RangesNot Completed

    Solutions: 454 | Step-by-step solution | Challenge discussion

    SuperincreasingNot Completed

    Solutions: 388 | Step-by-step solution | Challenge discussion

    Hamming DistanceNot Completed

    Solutions: 253 | Step-by-step solution | Challenge discussion

    Rectangle AreaNot Completed

    Solutions: 291 | Step-by-step solution | Challenge discussion

    Bitwise OneNot Completed

    Solutions: 301 | Step-by-step solution | Challenge discussion

    Medium Difficulty

    Prime TimeNot Completed

    Solutions: 9621 | Step-by-step solution | Challenge discussion

    Run Length Not Completed

    Solutions: 6472 | Step-by-step solution | Challenge discussion

    Prime MoverNot Completed

    Solutions: 6040 | Step-by-step solution | Challenge discussion

    Palindrome TwoNot Completed

    Solutions: 5474 | Step-by-step solution | Challenge discussion

    DivisionNot Completed

    Solutions: 4872 | Step-by-step solution | Challenge discussion

    String ScrambleNot Completed

    Solutions: 5235 | Step-by-step solution | Challenge discussion

    Arith Geo IINot Completed

    Solutions: 3858 | Step-by-step solution | Challenge discussion

    Array AdditionNot Completed

    Solutions: 3103 | Step-by-step solution | Challenge discussion

    Binary ConverterNot Completed

    Solutions: 3710 | Step-by-step solution | Challenge discussion

    Letter CountNot Completed

    Solutions: 3161 | Step-by-step solution | Challenge discussion

    Caesar CipherNot Completed

    Solutions: 3756 | Step-by-step solution | Challenge discussion

    Simple ModeNot Completed

    Solutions: 3527 | Step-by-step solution | Challenge discussion

    ConsecutiveNot Completed

    Solutions: 3122 | Step-by-step solution | Challenge discussion

    Formatted DivisionNot Completed

    Solutions: 2693 | Step-by-step solution | Challenge discussion

    Counting MinutesNot Completed

    Solutions: 2073 | Step-by-step solution | Challenge discussion

    Permutation StepNot Completed

    Solutions: 2272 | Step-by-step solution | Challenge discussion

    Prime CheckerNot Completed

    Solutions: 1770 | Step-by-step solution | Challenge discussion

    Dash Insert IINot Completed

    Solutions: 3736 | Step-by-step solution | Challenge discussion

    Swap IINot Completed

    Solutions: 1952 | Step-by-step solution | Challenge discussion

    Number SearchNot Completed

    Solutions: 2360 | Step-by-step solution | Challenge discussion

    Triple DoubleNot Completed

    Solutions: 2161 | Step-by-step solution | Challenge discussion

    Bracket MatcherNot Completed

    Solutions: 2044 | Step-by-step solution | Challenge discussion

    String ReductionNot Completed

    Solutions: 1699 | Step-by-step solution | Challenge discussion

    ThreeFive MultiplesNot Completed

    Solutions: 2073 | Step-by-step solution | Challenge discussion

    Coin DeterminerNot Completed

    Solutions: 1651 | Step-by-step solution | Challenge discussion

    Fibonacci CheckerNot Completed

    Solutions: 1990 | Step-by-step solution | Challenge discussion

    Multiple BracketsNot Completed

    Solutions: 1598 | Step-by-step solution | Challenge discussion

    Most Free TimeNot Completed

    Solutions: 1007 | Step-by-step solution | Challenge discussion

    Overlapping RectanglesNot Completed

    Solutions: 1148 | Step-by-step solution | Challenge discussion

    Look Say SequenceNot Completed

    Solutions: 975 | Step-by-step solution | Challenge discussion

    Distinct ListNot Completed

    Solutions: 1837 | Step-by-step solution | Challenge discussion

    Number EncodingNot Completed

    Solutions: 1036 | Step-by-step solution | Challenge discussion

    Stock PickerNot Completed

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

    Hard Difficulty

    Sudoku Quadrant CheckerNot Completed

    Solutions: 64 | Step-by-step solution | Challenge discussion

    Optimal AssignmentsNot Completed

    Solutions: 461 | Step-by-step solution | Challenge discussion

    Transitivity RelationsNot Completed

    Solutions: 387 | Step-by-step solution | Challenge discussion

    Shortest PathNot Completed

    Solutions: 793 | Step-by-step solution | Challenge discussion

    Polynomial ExpansionNot Completed

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

    CalculatorNot Completed

    Solutions: 904 | Step-by-step solution | Challenge discussion

    Pattern ChaserNot Completed

    Solutions: 504 | Step-by-step solution | Challenge discussion

    Weighted PathNot Completed

    Solutions: 280 | Step-by-step solution | Challenge discussion

    RREF MatrixNot Completed

    Solutions: 96 | Step-by-step solution | Challenge discussion

    Intersecting LinesNot Completed

    Solutions: 442 | Step-by-step solution | Challenge discussion

    Kaprekars ConstantNot Completed

    Solutions: 55 | Step-by-step solution | Challenge discussion

    Hamiltonian PathNot Completed

    Solutions: 112 | Step-by-step solution | Challenge discussion

    Step WalkingNot Completed

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

    Gas StationNot Completed

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

    Symmetric MatrixNot Completed

    Solutions: 311 | Step-by-step solution | Challenge discussion

    Switch SortNot Completed

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

    Matrix DeterminantNot Completed

    Solutions: 226 | Step-by-step solution | Challenge discussion

    Queen CheckNot Completed

    Solutions: 379 | Step-by-step solution | Challenge discussion

    Noughts DeterminerNot Completed

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

    Blackjack HighestNot Completed

    Solutions: 409 | 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: 461 | Step-by-step solution | Challenge discussion

    Farthest NodesNot Completed

    Solutions: 126 | Step-by-step solution | Challenge discussion

    Line OrderingNot Completed

    Solutions: 33 | Step-by-step solution | Challenge discussion

    Quick KnightNot Completed

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

    Square FiguresNot Completed

    Solutions: 63 | 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: 40 | Step-by-step solution | Challenge discussion

    Roman Numeral ReductionNot Completed

    Solutions: 41 | Step-by-step solution | Challenge discussion

    Parallel SumsNot Completed

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

    LCSNot Completed

    Solutions: 29 | Step-by-step solution | Challenge discussion

    Nim WinnerNot Completed

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

    Pascals TriangleNot Completed

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

    Reverse Polish NotationNot Completed

    Solutions: 163 | Step-by-step solution | Challenge discussion

    Max Heap CheckerNot Completed

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

    Chessboard TravelingNot Completed

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

    Matching CouplesNot Completed

    Solutions: 60 | Step-by-step solution | Challenge discussion

    Approaching FibonacciNot Completed

    Solutions: 55 | Step-by-step solution | Challenge discussion

    Simple SATNot Completed

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

    Array CouplesNot Completed

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

    Bracket CombinationsNot Completed

    Solutions: 41 | Step-by-step solution | Challenge discussion

    Counting AnagramsNot Completed

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

    Array RotationNot Completed

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