If If you have a normal singly linked list, how could you print the items backward?
Print items Backwards in a Normal Singly Linked List-
Given a linked list, can print its items backwards using a recursive function. For example, if tthe given linked list is
1->2->3->4 , then output should be4->3->2->1.
Algorithm-
1.Call print reverse for hed->next.
2. Print head ->data
Implementation:
#include <stdio.h> #include<stdlib.h> struct node{ int data; struct node*next; }; struct node *head = NULL; struct node *current = NULL; void reverse_print(struct node *list){ if(list == NULL){ printf("[null] => "); return; } reverse_print (list->next); printf(" %d =>",list ->data); } //create linked list void insert (int data){ //allocate memory for new node; struct node *link = (struct node*) malloc(sizeof(struct node)); link-> data = data; link-> next = NULL; // if head is empty , create new list if (head == NULL) { head = link ; return; } current = head //move to the end of the list while (current ->next! = NULL) current = current ->next; // Insert to the end of the list current ->next = link; } int main (){ insert(10); insert(20); insert(30); insert(1); insert(40); insert(56); reverse_print(head); return 0; }
OUTPUT:
Output of the program should be
[null] => 56 => 40 => 1 => 30 => 20 => 10 =>
If If you have a normal singly linked list, how could you print the items backward?
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