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Topic: Queue-question / Level: Beginner
61. Write a program to implement a queue that returns elements in sorted order.
62. Write a program to implement a queue that supports duplicate elements.
63. Write a program to find the total number of even and odd elements in a queue.
64. Write a program to implement a queue that supports priority updates.
65. Write a program to implement a queue with a maximum size and a minimum size.
66. Write a program to find the first repeated element in a queue.
67. Write a program to implement a queue that supports duplicate removal.
68. Write a program to rotate a queue by half its size.
69. Write a program to implement a circular queue using linked lists.
70. Write a program to implement a queue with a custom comparator.
71. Write a program to find the largest and smallest elements in a queue without using extra space.
72. Write a program to find the sum of the first k elements in a queue.
73. Write a program to find the longest palindrome in a queue.
74. Write a program to implement a queue that stores pairs of elements.
75. Write a program to implement a queue that stores elements with an expiration time.
76. Write a program to implement a queue that logs the time of insertion for each element.
77. Write a program to implement a queue that stores elements with a priority level.
78. Write a program to find the average of the last k elements in a queue.
79. Write a program to implement a queue that allows peek operations.
80. Write a program to find the first non-repeating character in a queue.
81. Write a program to check if a queue is a subsequence of another queue.
82. Write a program to implement a queue that counts the number of distinct elements.
83. Write a program to implement a queue that supports both enqueue and dequeue operations with different data types.
84. Write a program to implement a queue that stores complex numbers.
85. Write a program to implement a queue that allows priority updates.
86. Write a program to merge two queues in a sorted manner.
87. Write a program to implement a queue that supports both FIFO and LIFO operations.
88. Write a program to find the median of elements in a queue.
89. Write a program to implement a queue that supports batch processing of elements.
90. Write a program to find the second smallest element in a queue.
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