• Challenges
  • Interview Questions
  • Easy Difficulty

    First ReverseNot Completed

    Solutions: 41355 | Step-by-step solution | Challenge discussion

    First FactorialNot Completed

    Solutions: 29276 | Step-by-step solution | Challenge discussion

    Longest WordNot Completed

    Solutions: 25152 | Step-by-step solution | Challenge discussion

    Letter ChangesNot Completed

    Solutions: 21105 | Step-by-step solution | Challenge discussion

    Simple AddingNot Completed

    Solutions: 19707 | Step-by-step solution | Challenge discussion

    Letter CapitalizeNot Completed

    Solutions: 16537 | Step-by-step solution | Challenge discussion

    Simple SymbolsNot Completed

    Solutions: 13998 | Step-by-step solution | Challenge discussion

    Check NumsNot Completed

    Solutions: 16542 | Step-by-step solution | Challenge discussion

    Time ConvertNot Completed

    Solutions: 12118 | Step-by-step solution | Challenge discussion

    Alphabet SoupNot Completed

    Solutions: 11509 | Step-by-step solution | Challenge discussion

    AB CheckNot Completed

    Solutions: 11149 | Step-by-step solution | Challenge discussion

    Vowel CountNot Completed

    Solutions: 11361 | Step-by-step solution | Challenge discussion

    Word CountNot Completed

    Solutions: 10903 | Step-by-step solution | Challenge discussion

    Ex OhNot Completed

    Solutions: 9997 | Step-by-step solution | Challenge discussion

    PalindromeNot Completed

    Solutions: 11405 | Step-by-step solution | Challenge discussion

    Arith GeoNot Completed

    Solutions: 8390 | Step-by-step solution | Challenge discussion

    Array Addition INot Completed

    Solutions: 4928 | Step-by-step solution | Challenge discussion

    Letter Count INot Completed

    Solutions: 4421 | Step-by-step solution | Challenge discussion

    Second GreatLowNot Completed

    Solutions: 7840 | Step-by-step solution | Challenge discussion

    Division StringifiedNot Completed

    Solutions: 6056 | Step-by-step solution | Challenge discussion

    Counting Minutes INot Completed

    Solutions: 3561 | Step-by-step solution | Challenge discussion

    Mean ModeNot Completed

    Solutions: 4929 | Step-by-step solution | Challenge discussion

    Dash InsertNot Completed

    Solutions: 5305 | Step-by-step solution | Challenge discussion

    Swap CaseNot Completed

    Solutions: 5587 | Step-by-step solution | Challenge discussion

    Number AdditionNot Completed

    Solutions: 5204 | Step-by-step solution | Challenge discussion

    Third GreatestNot Completed

    Solutions: 4741 | Step-by-step solution | Challenge discussion

    Powers of TwoNot Completed

    Solutions: 5263 | Step-by-step solution | Challenge discussion

    Additive PersistenceNot Completed

    Solutions: 3343 | Step-by-step solution | Challenge discussion

    Multiplicative PersistenceNot Completed

    Solutions: 2704 | Step-by-step solution | Challenge discussion

    Off Line MinimumNot Completed

    Solutions: 3462 | Step-by-step solution | Challenge discussion

    Changing SequenceNot Completed

    Solutions: 261 | Step-by-step solution | Challenge discussion

    Overlapping RangesNot Completed

    Solutions: 166 | Step-by-step solution | Challenge discussion

    SuperincreasingNot Completed

    Solutions: 42 | Step-by-step solution | Challenge discussion

    Hamming DistanceNot Completed

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

    Medium Difficulty

    Prime TimeNot Completed

    Solutions: 9383 | Step-by-step solution | Challenge discussion

    Run Length Not Completed

    Solutions: 6231 | Step-by-step solution | Challenge discussion

    Prime MoverNot Completed

    Solutions: 5857 | Step-by-step solution | Challenge discussion

    Palindrome TwoNot Completed

    Solutions: 5281 | Step-by-step solution | Challenge discussion

    DivisionNot Completed

    Solutions: 4684 | Step-by-step solution | Challenge discussion

    String ScrambleNot Completed

    Solutions: 4986 | Step-by-step solution | Challenge discussion

    Arith Geo IINot Completed

    Solutions: 3688 | Step-by-step solution | Challenge discussion

    Array AdditionNot Completed

    Solutions: 2973 | Step-by-step solution | Challenge discussion

    Binary ConverterNot Completed

    Solutions: 3602 | Step-by-step solution | Challenge discussion

    Letter CountNot Completed

    Solutions: 3022 | Step-by-step solution | Challenge discussion

    Caesar CipherNot Completed

    Solutions: 3600 | Step-by-step solution | Challenge discussion

    Simple ModeNot Completed

    Solutions: 3379 | Step-by-step solution | Challenge discussion

    ConsecutiveNot Completed

    Solutions: 2980 | Step-by-step solution | Challenge discussion

    Formatted DivisionNot Completed

    Solutions: 2572 | Step-by-step solution | Challenge discussion

    Counting MinutesNot Completed

    Solutions: 1991 | Step-by-step solution | Challenge discussion

    Permutation StepNot Completed

    Solutions: 2148 | Step-by-step solution | Challenge discussion

    Prime CheckerNot Completed

    Solutions: 1685 | Step-by-step solution | Challenge discussion

    Dash Insert IINot Completed

    Solutions: 3553 | Step-by-step solution | Challenge discussion

    Swap IINot Completed

    Solutions: 1856 | Step-by-step solution | Challenge discussion

    Number SearchNot Completed

    Solutions: 2227 | Step-by-step solution | Challenge discussion

    Triple DoubleNot Completed

    Solutions: 2041 | Step-by-step solution | Challenge discussion

    Bracket MatcherNot Completed

    Solutions: 1931 | Step-by-step solution | Challenge discussion

    String ReductionNot Completed

    Solutions: 1608 | Step-by-step solution | Challenge discussion

    ThreeFive MultiplesNot Completed

    Solutions: 1967 | Step-by-step solution | Challenge discussion

    Coin DeterminerNot Completed

    Solutions: 1584 | Step-by-step solution | Challenge discussion

    Fibonacci CheckerNot Completed

    Solutions: 1892 | Step-by-step solution | Challenge discussion

    Multiple BracketsNot Completed

    Solutions: 1501 | Step-by-step solution | Challenge discussion

    Most Free TimeNot Completed

    Solutions: 943 | Step-by-step solution | Challenge discussion

    Overlapping RectanglesNot Completed

    Solutions: 1095 | Step-by-step solution | Challenge discussion

    Look Say SequenceNot Completed

    Solutions: 899 | Step-by-step solution | Challenge discussion

    Distinct ListNot Completed

    Solutions: 1749 | Step-by-step solution | Challenge discussion

    Number EncodingNot Completed

    Solutions: 956 | Step-by-step solution | Challenge discussion

    Stock PickerNot Completed

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

    Hard Difficulty

    Sudoku Quadrant CheckerNot Completed

    Solutions: 52 | 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: 778 | Step-by-step solution | Challenge discussion

    Polynomial ExpansionNot Completed

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

    CalculatorNot Completed

    Solutions: 881 | Step-by-step solution | Challenge discussion

    Pattern ChaserNot Completed

    Solutions: 481 | Step-by-step solution | Challenge discussion

    Weighted PathNot Completed

    Solutions: 269 | Step-by-step solution | Challenge discussion

    RREF MatrixNot Completed

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

    Intersecting LinesNot Completed

    Solutions: 428 | Step-by-step solution | Challenge discussion

    Kaprekars ConstantNot Completed

    Solutions: 43 | 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: 304 | 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: 364 | Step-by-step solution | Challenge discussion

    Noughts DeterminerNot Completed

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

    Blackjack HighestNot Completed

    Solutions: 404 | 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: 118 | Step-by-step solution | Challenge discussion

    Line OrderingNot Completed

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

    Quick KnightNot Completed

    Solutions: 23 | 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: 41 | Step-by-step solution | Challenge discussion

    Reverse Polish NotationNot Completed

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

    Max Heap CheckerNot Completed

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

    Chessboard TravelingNot Completed

    Solutions: 21 | 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: 13 | Step-by-step solution | Challenge discussion

    Array CouplesNot Completed

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

    Bracket CombinationsNot Completed

    Solutions: 10 | Step-by-step solution | Challenge discussion

    Counting AnagramsNot Completed

    Solutions: 3 | Step-by-step solution | Challenge discussion

    Array RotationNot Completed

    Solutions: 11 | Step-by-step solution | Challenge discussion