Top coding questions asked in interview

Some important coding question for interview

C

C++

Java

Python

PHP

HTML

CSS

JavaScript

Q1. Write a code to check whether the given number is prime number or not.

Q2. Write a code to find sum of digits of a given number.

Q3. Write a code to find GCD of two numbers.

Q4. Write a code to find perfect number.

Q5. Write a code to print fibonacci series.

Q6. Write a code to check whether the number is even or odd.

Q7. Write a code to count the number of digits in a number.

Q8. Write a code to find whether a number is power of two or not.

Q9. Write a code to swap two numbers without using temporary variable.

Q10. Write a code to make a simple calculator.

Q11. Write a code to reverse a string.

Q12. Write a code to sort the characters in a given string.

Q13. Write a code to find length of a string.

Q14. Write a code to check whether the given number is palindrome or not.

Q15. Write a code to check whether the two strings are anagram of each other or not.

Q16. Write a code to find sum of array elements.

Q17. Write a code to find largest element in an array.

Q18. Write a code to add two matrices.

Q19. Write a code to print all distinct elements of a given integer array.

Q20.  Write a code to check armstrong number.

Q21. Write a code to check whether a character is vowel or consonant.

Q22. Write a code to check whether the string is substring of given string or not.

Q23. Write a code to find LCM of two numbers.

Q24. Write a code to delete duplicate elements from array.

Q25. Write a code to find smallest element in an array.

Q26. Write a code to find pairs with given sum in an array.

Q27. Write a code to search element in array using binary search algorithm.

Q28.Write a code to sort array elements in ascending order using bubble sort.

Q29. Write a code for Left array rotation.

Q30. Write a code to print pascal’s triangle.

Q31. Write a code To check friendly pair.

44. Write a code to print half inverted pyramid pattern using stars.

59. Write a code to find square root of a number.

55. Write a code to check automorphic number.

60. Write a code to find the missing number in array.

63. Write a code to print multiplication table of a number.

46. Write a code to print upper triangular elements of an array.

48. Write a code to convert number from decimal to binary number.

51. Write a code to check whether a number is positive or negative.

41. Write a code to print floyds triangle.

36. Write a code to sort array elements in ascending order using Insertion Sort.

34. Write a code to sort array elements in ascending order using selection sort algorithm.

39. Write a code to subtract two matrices.

43. Write a code to print half pyramid pattern using stars.

61. Write a code to check harshad (or niven) number.

64. Write a code to remove all occurrences of a character in a string.

33. Write a code to sort array elements in descending order using bubble sort.

37. Write a code to sort array elements in descending order using Insertion Sort.

47. Write a code to concatenate two string without using library function.

54. Write a code to find square root of a number.

58. Write a code to check strong number.

62. Write a code to print the numbers divisible by 5 or 7.

3. Write a code to check whether the given year is leap year or not.

24. Write a code to print all permutations of a given string.

20. Write a code to check whether the given string is pangram or not.

22. Write a code to count occurrences of a given character in a string.

42. Write a code to print full pyramid pattern using stars.

45. Write a code to print lower triangular elements of an array.

52. Write a code to find greatest of three numbers.

49. Write a code to count total number of vowels and consonants in a string.

40. Write a code to multiply two matrices.

35. Write a code to sort array elements in descending order using selection sort algorithm.

56. Write a code to check abundant number.

13. Write a code to find factorial of a number.