Reverse Nodes in k-Group

You are given a linked list and an integer k. Your task is to reverse the nodes in k-groups. If the number of nodes is not a multiple of k, then the remaining nodes at the end should remain as is. Input format: - The first line contains an integer n (1 <= n <= 1000), the number of nodes in the linked list. - The second line contains n integers representing the values of the nodes. - The third line contains an integer k (1 <= k <= n). Output format: - The linked list after reversing the nodes in k-groups, printed in a single line with values separated by spaces. Example: Input: 5 1 2 3 4 5 3 Output: 3 2 1 4 5