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/*
http://www.practice.geeksforgeeks.org/problem-page.php?pid=700234
http://www.geeksforgeeks.org/sort-linked-list-already-sorted-absolute-values/
*/
/* The structure of the Linked list Node is as follows:
struct Node
{
    Node* next;
    int data;
}; */

void sortList(Node** head)
{
    Node *prev = (*head);
    Node *current = (*head)->next;
    
    while(current != NULL){
        if(current->data < prev->data){
            prev->next = current->next;
            
            current->next = (*head);
            *head = current;
            current = prev;
        }else{
            prev = current;
        }
        current = current->next;
    }
}