Topic: language-problem / Level: beginner

• 51. Write a program to implement a binary search algorithm.
• 52. Write a program to check if a number is a perfect square.
• 53. Write a program to calculate the sum of the first n even numbers.
• 54. Write a program to find the middle element of an array.
• 55. Write a program to check if a number is a power of two.
• 56. Write a program to calculate the greatest common divisor (GCD) using recursion.
• 57. Write a program to display the first n terms of the arithmetic series.
• 58. Write a program to find the longest word in a sentence.
• 59. Write a program to count the occurrences of a specific character in a string.
• 60. Write a program to implement a simple alarm clock using time functions.
• 61. Write a program to find the number of occurrences of each letter in a string.
• 62. Write a program to calculate the area of a rectangle.
• 63. Write a program to check if a number is an Armstrong number.
• 64. Write a program to find the sum of all odd numbers from 1 to n.
• 65. Write a program to print a pyramid pattern of stars.
• 66. Write a program to determine the number of digits in a number.
• 67. Write a program to print the reverse of a string using a loop.
• 68. Write a program to find the maximum and minimum in a list of numbers.
• 69. Write a program to find the LCM of two numbers.
• 70. Write a program to implement a basic file reader.
• 71. Write a program to check if a string is a valid palindrome.
• 72. Write a program to find the product of two matrices.
• 73. Write a program to calculate the average of n numbers using arrays.
• 74. Write a program to remove all whitespace from a string.
• 75. Write a program to implement a basic voting system using arrays.
• 76. Write a program to find the sum of squares of first n natural numbers.
• 77. Write a program to generate a random number between 1 and 100.
• 78. Write a program to print all the factors of a given number.
• 79. Write a program to find the frequency of vowels in a string.
• 80. Write a program to implement a basic ATM system.
• 81. Write a program to display the date and time using time functions.
• 82. Write a program to count the number of uppercase and lowercase letters in a string.
• 83. Write a program to check if two strings are equal, ignoring case.
• 84. Write a program to implement a simple text-based adventure game.
• 85. Write a program to calculate the sum of a geometric series.
• 86. Write a program to find the transpose of a matrix.
• 87. Write a program to implement a basic spell checker using an array of words.
• 88. Write a program to check if a string is a substring of another string.
• 89. Write a program to find the first non-repeated character in a string.
• 90. Write a program to create a simple stopwatch using time functions.
• 91. Write a program to implement a simple text-based calculator.
• 92. Write a program to find the second largest number in a list.
• 93. Write a program to calculate the sum of the first n odd numbers.
• 94. Write a program to check if a number is a happy number.
• 95. Write a program to print a diamond pattern using stars.
• 96. Write a program to calculate the number of days between two dates.
• 97. Write a program to convert decimal to binary.
• 98. Write a program to display all the prime factors of a number.
• 99. Write a program to implement a simple string encryption algorithm.
• 100. Write a program to count the number of times a substring appears in a string.

• More Levels

• Intermediate
• Advanced