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Problem StatementGiven an integer K and a queue of integers, reverse the order of the first K elements of the queue, leaving the other elements in the same relative order. Note: Use an array for implementation.Input format :The first line of input consists of an integer N, representing the number of elements in the queue.The second line consists of the value of K.The third line consists of N space-separated queue elements.Output format :The output displays "Reversed queue: " followed by the queue elements after the reversal is done, separated by a space.Refer to the sample output for formatting specifications.Code constraints :The maximum size of the array is 50.K ≤ NSample test cases :Input 1 :541 2 3 4 5Output 1 :Reversed queue: 4 3 2 1 5 Input 2 :951 2 3 4 5 6 7 8 9Output 2 :Reversed queue: 5 4 3 2 1 6

Question

Problem StatementGiven an integer K and a queue of integers, reverse the order of the first K elements of the queue, leaving the other elements in the same relative order. Note: Use an array for implementation.Input format :The first line of input consists of an integer N, representing the number of elements in the queue.The second line consists of the value of K.The third line consists of N space-separated queue elements.Output format :The output displays "Reversed queue: " followed by the queue elements after the reversal is done, separated by a space.Refer to the sample output for formatting specifications.Code constraints :The maximum size of the array is 50.K ≤ NSample test cases :Input 1 :541 2 3 4 5Output 1 :Reversed queue: 4 3 2 1 5 Input 2 :951 2 3 4 5 6 7 8 9Output 2 :Reversed queue: 5 4 3 2 1 6

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Solution

Here is a step-by-step solution to the problem:

  1. First, we need to create an array to represent the queue. In Python, we can use a list for this. We can initialize the queue with the given elements.

  2. Next, we need to reverse the first K elements of the queue. We can do this by slicing the first K elements from the queue, reversing them, and then concatenating them with the rest of the queue.

  3. Finally, we print the reversed queue.

Here is a Python code snippet that implements these steps:

def reverse_queue(n, k, queue):
    # Reverse the first K elements
    queue[:k] = queue[:k][::-1]
    return queue

n = 5
k = 4
queue = [1, 2, 3, 4, 5]
reversed_queue = reverse_queue(n, k, queue)
print("Reversed queue: ", ' '.join(map(str, reversed_queue)))

In this code, n is the number of elements in the queue, k is the number of elements to reverse, and queue is the queue of integers. The function reverse_queue reverses the first k elements of queue and returns the resulting queue. The [::-1] slice operation is used to reverse the elements. The join function is used to convert the integers in the queue to strings and join them with spaces in between.

This problem has been solved

Similar Questions

Single File Programming QuestionProblem StatementGiven an integer K and a queue of integers, reverse the order of the first K elements of the queue, leaving the other elements in the same relative order. Note: You can use either an array or a linked list for implementation.Input format :The first line of input consists of an integer N, representing the number of elements in the queue.The second line consists of the value of K.The third line consists of N space-separated queue elements.Output format :The output displays "Reversed queue: " followed by the queue elements after the reversal is done, separated by a space.Refer to the sample output for formatting specifications.Code constraints :N > 0K ≤ NSample test cases :

Reversing the first K elements of a Queue

Given a stack of `N` elements(integers), interleave the first half of the stack with the second half reversed using only one other queue. This should be done in-place.Recall that you can only push or pop from a stack, and enqueue or dequeue from a queue.For example,if the stack is `[1, 2, 3, 4, 5]`, it should become `[1, 5, 2, 4, 3]`.If the stack is `[1, 2, 3, 4]`, it should become `[1, 4, 2, 3]`.Hint: Try working backwards from the end state.Instruction: To test your code and to run your custom test cases, provide input as mentioned in the visible sample test cases.Sample Test CasesTest Case 1:Expected Output:Enter·the·elements·of·the·stack·separated·by·space:·1 2 3 4 5Stack:·[1,·2,·3,·4,·5]Stack·after·interleaving·the·first·half·with·the·reversed·second·half:[1,·5,·2,·4,·3]

Problem StatementGokul is working on a program to rearrange elements in a queue using an array. Given a queue of integers, he needs to modify it by interleaving its first half with the second half. Write a program to help Gokul achieve this task.Note: Interleaving involves merging elements from two separate halves in an alternating fashion to create a new sequence.ExampleInput 61 2 3 7 9 5Output 1 7 2 9 3 5 ExplanationThe interleave rearranges elements in a queue by alternating between two halves. For instance, given input [1, 2, 3, 7, 9, 5], it splits into [1, 2, 3] and [7, 9, 5], then interleaves them as [1, 7, 2, 9, 3, 5]. It achieves this by splitting the queue into two halves and then merging them in an interleaved manner.Company Tags: AdobeInput format :The first line of input consists of an integer n, representing the number of elements in the queue.The second line consists of n space-separated integers, representing the queue elements.Output format :The output prints n space-separated integers, representing the rearranged queue after interleaving its first half with the second half.Refer to the sample output for formatting specifications.Code constraints :2 ≤ n ≤ 10, where n will always be even.1 ≤ queue elements ≤ 1000Sample test cases :Input 1 :61 2 3 7 9 5Output 1 :1 7 2 9 3 5 Input 2 :414 62 56 41Output 2 :14 56 62 41

Reversal ChallengeImagine you are working as an employee in an MNC, where your manager knows that you are very good at coding in arrays. He has provided you a vigorous training on data structures, so he challenges you to do the reversal of an elements using linked lists.Constraints:Input Format :The input contains a set of integers.Output Format :The output contains reversed set of given integers.Example:Input 1:51  2  3  4  5Output 1:5  4  3  2  1Input 2:411  12  14  13Output 2:13  14  12  11Explanation:Reverse the elements sequence in the given linked listPublic Test Cases:# INPUT EXPECTED OUTPUT1 5 1 2 3 4 5 5 4 3 2 12 4 11 12 14 1313 14 12 11

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