Top 25 Programming Puzzles and Brain Teasers

Following is the list of commonly asked programming puzzles in technical interviews:

1. Clock Angle Problem
2. Add two numbers without using the addition operator
3. Implement power function without using multiplication and division operators
4. Print all numbers between 1 to N without using a semicolon
5. Swap two numbers without using a third variable
6. Determine the if condition to print the specific output
7. Find the maximum and minimum value of a triplet without using a conditional statement
8. Find numbers represented as the sum of two cubes for two different pairs
9. Print “Hello World” with empty main function
10. Print all numbers between 1 to N without using any loop
11. Print a semicolon without using a semicolon anywhere in the program
12. Multiply two numbers without using a multiplication operator or loops
13. Find the square of a number without using the multiplication and division operator
14. Check if a number is even or odd without using any conditional statement
15. Set both elements of a binary array to 0 in a single line
16. Find minimum number without using conditional statement or ternary operator
17. Perform division of two numbers without using division operator
18. Generate 0 and 1 with 75% and 25% probability
19. Generate desired random numbers with equal probability
20. Return 0, 1, and 2 with equal probability using a specified function
21. Generate fair results from a biased coin
22. Generate numbers from 1 to 7 with equal probability using a specified function
23. Implement ternary operator without using conditional expressions
24. Determine if two integers are equal without using comparison and arithmetic operators
25. Get 0 and 1 with equal probability using a specified function

Thanks for reading.