- Library Fine (https://www.hackerrank.com/challenges/library-fine)
- Sherlock and Anagrams (https://www.hackerrank.com/challenges/sherlock-and-anagrams)
- Bonetrousle (https://www.hackerrank.com/challenges/bonetrousle)
- Fraudulant Activity Notifications (https://www.hackerrank.com/challenges/fraudulent-activity-notifications)
- K_Factorization (https://www.hackerrank.com/challenges/k-factorization/problem)