- A very big sum easy: Solution
- Birthday Cake Candles easy: Solution
- ClimbingLeaderboard medium: Solution
- Compare the Triplets easy: Solution
- DiagonalDifference easy: Solution
- Grading Students easy: Solution
- Pangrams easy: Solution
- PlusMinus easy: Solution
- Sherlock and valid string medium: Solution
- Apple and Orange easy: Solution
- Kangaroo easy: Solution
- Almost Sorted medium: Solution
- Common Child medium: Solution
- Drawing Book easy: Solution