PYTHON PROGRAMS

CRT PROGRAMS
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 40 Programming Questions (Ordered by Complexity — Easy to Hard)

🟢 Level 1: Very Easy

1. Print "Hello, World!"

2. Add two numbers

3. Swap two numbers using a third variable

4. Check if a number is even or odd

5. Check if a number is positive, negative or zero

6. Find the largest of two numbers

7. Find the largest of three numbers

8. Check if a year is a leap year

9. Simple calculator using switch case

10. Sum of first N natural numbers using loop

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🟡 Level 2: Easy

11. Factorial of a number using loop

12. Reverse a number

13. Check if a number is palindrome

14. Check if a number is Armstrong

15. Generate Fibonacci series up to N terms

16. Count the number of digits in a number

17. Find GCD and LCM of two numbers

18. Display multiplication table of a number

19. Print star pyramid pattern

20. Count digits, vowels and consonants in a string

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🟠 Level 3: Moderate

21. Find largest element in an array

22. Linear search in an array

23. Sort an array (Bubble sort or Selection sort)

24. Matrix addition (2D array)

25. Matrix multiplication

26. Reverse a string

27. Check if a string is palindrome

28. Write a function to check prime number

29. Factorial using recursion

30. String concatenation and comparison

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🔵 Level 4: Intermediate

31. Swap values using pointers (C) / references (Java/Python)

32. Structure to store and display student details (C)

33. Create a class for employee with methods (Java/Python OOP)

34. Use constructor and destructor (Java/Python)

35. Demonstrate inheritance with base and derived class (Java/Python)

36. File handling – write data to a file

37. File handling – read data from a file and count characters

38. Menu-driven program using functions (Calculator)

39. Create a basic stack using array

40. Program to find frequency of elements in an array