Kotlin complete example collection

The best way to learn Kotlin is through practice examples. This page contains examples of basic Kotlin concepts. It is recommended that you learn from these examples and then try them yourself.

All programs on this page have been tested and can run on all platforms.

1. Kotlin program to print an integer (input by the user)

2. Kotlin program to add two integers

3. Kotlin program to multiply two floating-point numbers

4. Kotlin program to find the ASCII value of a character

5. Kotlin program to calculate quotient and remainder

6. Kotlin program to swap two numbers

7. Kotlin program to check if a number is even or odd

8. Kotlin program to check if a letter is a vowel or consonant

9. Kotlin program to find the largest number among three numbers

10. Kotlin program to find all roots of a quadratic equation

11. Kotlin program to check if a year is a leap year

12. Kotlin program to check if a number is positive or negative

13. Kotlin program to check if a character is a letter

14. Kotlin program to calculate the sum of natural numbers

15. Kotlin program to find the factorial of a number

16. Kotlin program to generate a multiplication table

17. Kotlin program to display the Fibonacci sequence

18. Kotlin program to find the GCD (Greatest Common Divisor) of two numbers

19. Kotlin program to find the LCM of two numbers

20. Kotlin program to display characters from A to Z using a loop

21. Kotlin program to calculate the number of digits in an integer

22. Kotlin program to reverse a number

23. Kotlin program to calculate the power of a number

24. Kotlin program checks if a number is a palindrome

25. Kotlin program checks if a number is a prime number

26. Kotlin programs to display prime numbers between two intervals

27. Kotlin programs to check Armstrong numbers

28. Kotlin programs to display Armstrong numbers between two intervals

29. Kotlin programs to display prime numbers between two intervals using a function

30. Kotlin programs to display Armstrong numbers between two intervals using a function

31. Kotlin programs to display the factors of a number

32. Kotlin programs to create a simple calculator using switch ... case

33. Kotlin programs to check if a number can be represented as the sum of two prime numbers

34. Kotlin programs to find the sum of natural numbers using recursion

35. Kotlin programs to find the factorial of a number using recursion

36. Kotlin programs to find GCD using recursion

37. Kotlin programs to convert binary numbers to decimal

38. Kotlin programs to convert octal numbers to decimal

39. Kotlin programs to convert binary numbers to octal

40. Kotlin programs to reverse a sentence using recursion

41. Kotlin programs to calculate the power using recursion

42. Kotlin programs to calculate the average using an array

43. Kotlin programs to find the largest element in an array

44. Kotlin programs to calculate the standard deviation

45. Kotlin programs to add two matrices using a multi-dimensional array

46. Kotlin programs to multiply a matrix with a multi-dimensional array

47. Kotlin programs to multiply two matrices by passing them to a function

48. Kotlin programs to find the transpose of a matrix

49. Kotlin programs to find the frequency of characters in a string

50. Kotlin programs calculate the number of vowels and consonants in a sentence

51. Kotlin programs sort elements in alphabetical order (dictionary order)

52. Kotlin programs add two complex numbers by passing a class to a function

53. Kotlin programs to calculate the time difference between two time periods

54. Kotlin code creates pyramids and patterns

55. Kotlin programs remove all spaces from a string

56. Kotlin programs print an array

57. Kotlin programs convert a string to a date

58. Kotlin programs round a number to decimal places

59. Kotlin programs concatenate and merge two arrays

60. Kotlin programs convert a character (char) to a string

61. Kotlin programs check if an array contains a given value

62. Kotlin programs check if a string is empty or null

63. Kotlin programs get the current date/Time

64. Kotlin programs convert milliseconds to minutes

65. Kotlin programs add two dates

66. Kotlin programs merge two lists

67. Kotlin programs convert ArrayLists to Arrays

68. Kotlin programs get the current working directory

69. Kotlin programs convert mappings (HashMap) to lists

70. Kotlin programs convert arrays to Sets (HashSet)

71. Kotlin Program Converts Byte Array to Hexadecimal

72. Kotlin Program Creates String from File Content

73. Kotlin Program Appends Text to Existing File

74. Kotlin Program Converts Stack Trace to String

75. Kotlin Program Converts File to Byte Array and Vice Versa

76. Kotlin Program Converts InputStream to String

77. Kotlin Program Converts OutputStream to String

78. Kotlin Program Finds Enum by String Value

79. Kotlin Program Compares Strings

80. Kotlin Program Sorts Map by Value

81. Kotlin Program Sorts Custom Object ArrayList by Property

82. Kotlin Program Checks If a String Is a Number