feat: problem 1 and 2 added

[Tejas274]

No description provided.

[super30admin]

The student has not provided any solution to the problem. Without seeing any code or approach, it's impossible to evaluate correctness, time complexity, space complexity, code quality, or efficiency.

For future submissions, the student should:

1. Ensure they actually submit their solution code
2. Include comments explaining their approach if the solution is complex
3. Consider edge cases and how their solution handles them
4. Follow best practices for clean, readable code

Since no solution was provided, I cannot assess whether the problem was solved correctly or not.