Queue Rotation

Medium Queue: Applications PRO
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Problem Statement

Write a C program to rotate the elements of a queue to the left by k positions.

Input Format

First line contains n and k. Second line contains n queue elements.

Output Format

Print the rotated queue elements from front to rear separated by spaces.

Constraints

1 <= n <= 50, 0 <= k <= n

Sample Input

5 2
10 20 30 40 50

Sample Output

30 40 50 10 20

Explanation

Dequeue the first k elements and re-enqueue them at the rear of the queue.

Starter Code

#include <stdio.h>
#include <stdlib.h>

int main() {
    int n, k;
    if (scanf("%d %d", &n, &k) == 2) {
        // Write your code here to rotate queue by k positions
    }
    return 0;
}

Limits

  • Time Limit: 1s
  • Memory Limit: 256MB

Embedded C Programming

Updated: March 15, 2026
Intermediate

Embedded systems rely on efficient low-level programming to interact directly with hardware. In this course, you will learn how to write practical Embedded C programs used in real microcontroller-based systems. Rather than focusing only on theory, this course follows a practice-driven approach. Each lesson includes hands-on coding exercises that simulate real firmware development tasks used