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.

Array Decision Making Binary Search

Intermediate

Implement the `findPeakElementIndex` method that returns an index of a peak element in the array.

Array Decision Making Sorting

Intermediate

Implement the `sortOnlyEvenNumbers` method that sorts only the even numbers while keeping odd numbers in their positions.

Decision Making Stack Simulation

Learner

Implement the `isValidBracketPairString` method that checks whether a bracket string has properly matched and ordered brackets.

Loop Array Decision Making

Intermediate

Implement the `findSecondLargestDistinct` method that returns the second largest distinct value from the array.

Loop Array Decision Making

Learner

Implement the `isArrayStrictlyIncreasing` method that checks whether every array element is greater than the element before it.

Decision Making Number Theory

Learner

Implement the method `isPrime` that checks whether an integer is prime.

Math Decision Making

Beginner

Implement the method `isEven` that takes an integer as input and returns `true` if the number is even, and `false` if it is odd.

String Manipulation Decision Making String

Learner

Write a function named `isPalindrome` that determines whether a given string is a palindrome.