Code Challenges

Get better at coding with practice problems.

Coding Challenges

Select a problem, write code, run test cases, and submit your solution.

Math Decision Making Simulation

Learner

Implement the `detectCircularRouteSimple` method that checks whether the given movement sequence returns to the starting point.

Math Decision Making Simulation

Beginner

Implement the `validateBookingCapacity` method that checks whether a booking request fits within the available capacity.

Math Decision Making Simulation

Learner

Implement the `findWinnerTicTacToeRow` method that returns the winner found in any complete row of a tic-tac-toe board.

Math Decision Making Simulation

Learner

Implement the `simulateSimpleBrowserBack` method that simulates browser back navigation and returns the final page.

Math Decision Making Simulation

Intermediate

Implement the `checkBalancedScoreBrackets` method that checks whether scored bracket text remains balanced.

Math Decision Making Simulation

Intermediate

Implement the `validateStackPushPopSequence` method that checks whether a pop sequence is valid for the given push sequence.

Math Decision Making Simulation

Learner

Implement the `canAttendAllMeetings` method that checks whether a person can attend all given meetings.

Math Decision Making Simulation

Beginner

Implement the `meetingOverlapCheck` method that checks whether two time intervals overlap.

Math Decision Making Simulation

Intermediate

Implement the `rateLimiterAllowRequest` method that checks whether a request is allowed under a simple rate limit.

Math Decision Making Simulation

Learner

Implement the `validateIpSegmentSimple` method that checks whether a text segment is valid for an IP address part.

Math Number Theory Combinatorics

Proficient

Implement the `countWaysToReachSumWithDice` method that counts dice roll combinations that produce the target sum.

Math Number Theory Combinatorics

Intermediate

Implement the `integerBreakMaximumProduct` method that finds the maximum product after splitting an integer into at least two parts.

Math Number Theory Combinatorics

Learner

Implement the `excelColumnNumber` method that converts an Excel column title into its column number.

Math Number Theory Combinatorics

Intermediate

Implement the `countTrailingZerosFactorial` method that counts trailing zeroes in the factorial of n.

Math Number Theory Combinatorics

Learner

Implement the `isUglyNumber` method that checks whether the number has only 2, 3, and 5 as prime factors.

Math Number Theory Combinatorics

Intermediate

Implement the `lcmArrayValues` method that returns the least common multiple of all array values.

Math Number Theory Combinatorics

Learner

Implement the `gcdArrayValues` method that returns the greatest common divisor of all array values.

Math Number Theory Combinatorics

Intermediate

Implement the `sievePrimeCount` method that counts prime numbers up to n using sieve-style marking.

Math Number Theory Combinatorics

Intermediate

Implement the `powIntegerFast` method that calculates an integer power efficiently using fast exponentiation.