• Challenges
  • Interview Questions
  • Easy Difficulty

    First ReverseNot Completed

    Solutions: 41585 | Step-by-step solution | Challenge discussion

    First FactorialNot Completed

    Solutions: 29399 | Step-by-step solution | Challenge discussion

    Longest WordNot Completed

    Solutions: 25265 | Step-by-step solution | Challenge discussion

    Letter ChangesNot Completed

    Solutions: 21268 | Step-by-step solution | Challenge discussion

    Simple AddingNot Completed

    Solutions: 19806 | Step-by-step solution | Challenge discussion

    Letter CapitalizeNot Completed

    Solutions: 16641 | Step-by-step solution | Challenge discussion

    Simple SymbolsNot Completed

    Solutions: 14029 | Step-by-step solution | Challenge discussion

    Check NumsNot Completed

    Solutions: 16574 | Step-by-step solution | Challenge discussion

    Time ConvertNot Completed

    Solutions: 12147 | Step-by-step solution | Challenge discussion

    Alphabet SoupNot Completed

    Solutions: 11538 | Step-by-step solution | Challenge discussion

    AB CheckNot Completed

    Solutions: 11172 | Step-by-step solution | Challenge discussion

    Vowel CountNot Completed

    Solutions: 11383 | Step-by-step solution | Challenge discussion

    Word CountNot Completed

    Solutions: 10929 | Step-by-step solution | Challenge discussion

    Ex OhNot Completed

    Solutions: 10026 | Step-by-step solution | Challenge discussion

    PalindromeNot Completed

    Solutions: 11442 | Step-by-step solution | Challenge discussion

    Arith GeoNot Completed

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

    Array Addition INot Completed

    Solutions: 4950 | Step-by-step solution | Challenge discussion

    Letter Count INot Completed

    Solutions: 4439 | Step-by-step solution | Challenge discussion

    Second GreatLowNot Completed

    Solutions: 7878 | Step-by-step solution | Challenge discussion

    Division StringifiedNot Completed

    Solutions: 6070 | Step-by-step solution | Challenge discussion

    Counting Minutes INot Completed

    Solutions: 3577 | Step-by-step solution | Challenge discussion

    Mean ModeNot Completed

    Solutions: 4941 | Step-by-step solution | Challenge discussion

    Dash InsertNot Completed

    Solutions: 5323 | Step-by-step solution | Challenge discussion

    Swap CaseNot Completed

    Solutions: 5608 | Step-by-step solution | Challenge discussion

    Number AdditionNot Completed

    Solutions: 5220 | Step-by-step solution | Challenge discussion

    Third GreatestNot Completed

    Solutions: 4757 | Step-by-step solution | Challenge discussion

    Powers of TwoNot Completed

    Solutions: 5280 | Step-by-step solution | Challenge discussion

    Additive PersistenceNot Completed

    Solutions: 3358 | Step-by-step solution | Challenge discussion

    Multiplicative PersistenceNot Completed

    Solutions: 2715 | Step-by-step solution | Challenge discussion

    Off Line MinimumNot Completed

    Solutions: 3482 | Step-by-step solution | Challenge discussion

    Changing SequenceNot Completed

    Solutions: 277 | Step-by-step solution | Challenge discussion

    Overlapping RangesNot Completed

    Solutions: 188 | Step-by-step solution | Challenge discussion

    SuperincreasingNot Completed

    Solutions: 75 | Step-by-step solution | Challenge discussion

    Hamming DistanceNot Completed

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

    Medium Difficulty

    Prime TimeNot Completed

    Solutions: 9399 | Step-by-step solution | Challenge discussion

    Run Length Not Completed

    Solutions: 6245 | Step-by-step solution | Challenge discussion

    Prime MoverNot Completed

    Solutions: 5864 | Step-by-step solution | Challenge discussion

    Palindrome TwoNot Completed

    Solutions: 5293 | Step-by-step solution | Challenge discussion

    DivisionNot Completed

    Solutions: 4693 | Step-by-step solution | Challenge discussion

    String ScrambleNot Completed

    Solutions: 5002 | 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: 3613 | Step-by-step solution | Challenge discussion

    Simple ModeNot Completed

    Solutions: 3388 | Step-by-step solution | Challenge discussion

    ConsecutiveNot Completed

    Solutions: 2989 | Step-by-step solution | Challenge discussion

    Formatted DivisionNot Completed

    Solutions: 2580 | Step-by-step solution | Challenge discussion

    Counting MinutesNot Completed

    Solutions: 1999 | Step-by-step solution | Challenge discussion

    Permutation StepNot Completed

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

    Prime CheckerNot Completed

    Solutions: 1688 | 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: 2235 | 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: 1903 | 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: 906 | Step-by-step solution | Challenge discussion

    Distinct ListNot Completed

    Solutions: 1754 | Step-by-step solution | Challenge discussion

    Number EncodingNot Completed

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

    Stock PickerNot Completed

    Solutions: 77 | Step-by-step solution | Challenge discussion

    Hard Difficulty

    Sudoku Quadrant CheckerNot Completed

    Solutions: 58 | 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: 226 | Step-by-step solution | Challenge discussion

    CalculatorNot Completed

    Solutions: 885 | Step-by-step solution | Challenge discussion

    Pattern ChaserNot Completed

    Solutions: 484 | Step-by-step solution | Challenge discussion

    Weighted PathNot Completed

    Solutions: 271 | Step-by-step solution | Challenge discussion

    RREF MatrixNot Completed

    Solutions: 89 | Step-by-step solution | Challenge discussion

    Intersecting LinesNot Completed

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

    Kaprekars ConstantNot Completed

    Solutions: 45 | Step-by-step solution | Challenge discussion

    Hamiltonian PathNot Completed

    Solutions: 104 | Step-by-step solution | Challenge discussion

    Step WalkingNot Completed

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

    Gas StationNot Completed

    Solutions: 431 | Step-by-step solution | Challenge discussion

    Symmetric MatrixNot Completed

    Solutions: 306 | Step-by-step solution | Challenge discussion

    Switch SortNot Completed

    Solutions: 219 | Step-by-step solution | Challenge discussion

    Matrix DeterminantNot Completed

    Solutions: 223 | Step-by-step solution | Challenge discussion

    Queen CheckNot Completed

    Solutions: 366 | Step-by-step solution | Challenge discussion

    Noughts DeterminerNot Completed

    Solutions: 329 | Step-by-step solution | Challenge discussion

    Blackjack HighestNot Completed

    Solutions: 406 | Step-by-step solution | Challenge discussion

    Alphabet Run EncryptionNot Completed

    Solutions: 206 | Step-by-step solution | Challenge discussion

    Vertex CoveringNot Completed

    Solutions: 111 | Step-by-step solution | Challenge discussion

    Knight JumpsNot Completed

    Solutions: 458 | Step-by-step solution | Challenge discussion

    Farthest NodesNot Completed

    Solutions: 120 | Step-by-step solution | Challenge discussion

    Line OrderingNot Completed

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

    Quick KnightNot Completed

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

    Square FiguresNot Completed

    Solutions: 47 | Step-by-step solution | Challenge discussion

    Connect Four WinnerNot Completed

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

    Array JumpingNot Completed

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

    Matrix BorderNot Completed

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

    Roman Numeral ReductionNot Completed

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

    Parallel SumsNot Completed

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

    LCSNot Completed

    Solutions: 21 | 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: 158 | Step-by-step solution | Challenge discussion

    Max Heap CheckerNot Completed

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

    Chessboard TravelingNot Completed

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

    Matching CouplesNot Completed

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

    Approaching FibonacciNot Completed

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

    Simple SATNot Completed

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

    Array CouplesNot Completed

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

    Bracket CombinationsNot Completed

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

    Counting AnagramsNot Completed

    Solutions: 7 | Step-by-step solution | Challenge discussion

    Array RotationNot Completed

    Solutions: 14 | Step-by-step solution | Challenge discussion