Practice Challenge

Hard Deque PRO
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Problem Statement

Write a C program to rotate a deque to the right by k positions and print the resulting elements from front to rear.

Input Format

Capacity, n elements, and rotation count k.

Output Format

Print rotated deque elements from front to rear separated by spaces.

Constraints

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

Sample Input

5 4 2
10 20 30 40

Sample Output

30 40 10 20

Explanation

Shift front and rear pointers logically by k positions to rotate the deque rightwards.

Starter Code

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

int main() {
    int cap, n, k;
    if (scanf("%d %d %d", &cap, &n, &k) == 3) {
        // Write your code here for deque rotation practice challenge
    }
    return 0;
}

Limits

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

Embedded C Programming

Updated: March 15, 2026
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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