- Solve Me First : Challenge, Solution
- Simple Array Sum : Challenge, Solution
- Compare the Triplets : Challenge, Solution
- A Very Big Sum : Challenge, Solution
- Diagonal Difference : Challenge, Solution
- Plus Minus : Challenge, Solution
- Staircase : Challenge, Solution
- Mini-Max Sum : Challenge, Solution
- Birthday Cake Candles : Challenge, Solution
- Time Conversion : Challenge, Solution
- Grading Students : Challenge, Solution
- Breaking the Records : Challenge, Solution
- Divisible Sum Pairs : Challenge, Solution
- The Hurdle Race : Challenge, Solution
- Find Digits : Challenge, Solution
- Super Reduced String : Challenge, Solution
- CamelCase : Challenge, Solution
- Caesar Cipher : Challenge, Solution