Practice Problems

Basic :

1. Print Hello World
2. Decision Making
3. Performing Arithmetic operations
4. Print a string n times
5. Swap two numbers
6. Reversing digits of a number
7. Decimal to any base conversion
8. Conversion from any base to Decimal
9. Conversion from Celsius to Fahrenheit
10. Print numbers from 1 to n without using loops
11. Middle of three
12. To check if a number is Palindrome or not
13. Binary representation of a number

Mathematical :

1. Small factorial
2. Odd or Even
3. Calculating a^b
4. Greatest of three numbers
5. Check if a number is a perfect square
6. All divisors of a natural number
7. Calculating nPr (Permutations)
8. Sum of AP
9. Sum of GP
10. Calculating Surface area and volume of cuboid
11. Calculating Compound Interest
12. Calculating Simple Interest
13. Printing Tables
14. Area of Rectangle,Right-Angled Triangle and Circle
15. Number of Open Doors
16. Number of integer solutions
17. Maximum possible sum of products
18. Remainder Solution
19. To check if given four points form a square or not
20. Overlapping rectangles
21. Sum of all prime numbers between 1 to n
22. To check if a number is power of another number
23. Common divisors
24. Composite series
25. Calculating Mean
26. Matching Pair
27. Perfect Number
28. Number of Divisors
29. Parallel or Perpendicular
30. Maximum Distance
31. Distance between two points
32. Tidy number
33. Proper divisors and XOR operation
34. Sum Palindrome

Patterns :

1. Number Pattern
2. Pattern printing
3. Triangle shrinking downwards
4. Triangle growing downwards
5. Pattren of strings
6. Y shaped pattern
7. Inverted triangle of stars

Array :

1. Print elements of array
2. Sum of array elements
3. Multiplying elements of an array
4. Search an element in array
5. Alone in couple
6. Finding second largest element in array
7. Binary array sorting
8. Immediate smaller element
9. Reversing an array by ‘d’ elements
10. Equal to Product
11. To check if an array is sorted or not
12. Finding roots of quadratic equation
13. Number of smaller and larger elements
14. Missing number
15. Reverse array in groups
16. Finding mean at every point
17. Print the left-most element
18. Compete the skills
19. Form largest number from digits
20. Find duplicates in an array

Matrix :

1. Diagonal Sum
2. Sum of elements in a matrix
3. Maximum sum of Hour Glass

Strings :

1. Converting string from LOWER case to UPPER case
2. Remove characters from alphanumeric string
3. Count of Camel case characters
4. Count number of alphabets
5. To check if a character is vowel or not
6. Finding substring in a string
7. Sorting a string
8. Perfect Reversible String
9. Finding longer of the string and concatenating
10. Display longest name
11. Reverse a string
12. Reversing vowels
13. Split the string
14. Sort the fest
15. Check if a string is rotated by two places

Date and Time :

1. Numebr of days between two given dates
2. Check if date is valid or not
3. 12-hour clock multiplication
4. 12-hour clock subtraction
5. 12-hour clock addition

Misc :

1. Max-min conversion
2. Jumping Frog
3. Professor and Parties
4. Combinational Logic
5. The Lazy Caterer’s Problem

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Recent Articles The page is designed for beginners in programming language, especially school students. It has following sections.

• Introduction to Programming Languages
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• Practice Problems
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• Recent School Coding Practice Problems
• Multiple Choice Questions – C, C++, Java, Python