Add code of 2 sorted linked list merge

Linked-List/sorted_merge_2LL.c

@@ -0,0 +1,104 @@
+#include<stdio.h>
+#include<stdlib.h>
+struct node{
+    int data;
+    struct node *next;
+};
+struct node *create(struct node *head,int i){
+    struct node *ptr;
+    ptr=(struct node *) malloc(sizeof(struct node));
+    struct node *p;
+    printf("Enter value[%d] of list:",i);
+    scanf("%d",&ptr->data);
+    ptr->next=NULL;
+    if(head==NULL){
+        head=ptr;
+        p=head;
+        return(head);
+    }
+    else{
+        p->next=ptr;
+        p=ptr;
+        return(head);
+    }
+}
+struct node *merge(struct node * head1,struct node * head2){
+    struct node* p1=head1;
+    struct node *p2=head2;
+    struct node *dummy;
+    struct node *p3=dummy;
+    while(p1!=NULL&&p2!=NULL){
+        if(p1->data>p2->data){
+            p3->next=p2;
+            p2=p2->next;
+        }
+        else{
+            p3->next=p1;
+            p1=p1->next;
+        }
+        p3=p3->next;
+    }
+    while(p1!=NULL){
+        p3->next=p1;
+        p1=p1->next;
+        p3=p3->next;
+    }
+    while(p2!=NULL){
+        p3->next=p2;
+        p2=p2->next;
+        p3=p3->next;
+    }
+    return dummy->next;
+}
+struct node *merge_rec(struct node * head1,struct node *head2){
+    if(head1==NULL){
+        return head2;
+    }
+    if(head2==NULL){
+        return head1;
+    }
+    struct node *result;
+    if(head1->data<head2->data){
+        result=head1;
+        result->next=merge_rec(head1->next,head2);
+    }
+    else{
+        result=head2;
+        result->next=merge_rec(head1,head2->next);
+    }
+    return result;
+}
+void print(struct node *ptr){
+    int i=1;
+    while(ptr!=NULL){
+        printf("Value at Node[%d]:%d\n",i,ptr->data);
+        i++;
+        ptr=ptr->next;
+    }
+}
+int main(){
+    int i,n,data,pos;
+    struct node *head1=NULL;
+    struct node *head2=NULL;
+    printf("Enter size of linked list1:");
+    scanf("%d",&n);
+    for(i=0;i<n;i++){
+        head1=create(head1,i+1);
+    }
+    print(head1);
+
+    printf("Enter size of linked list2:");
+    scanf("%d",&n);
+    for(i=0;i<n;i++){
+        head2=create(head2,i+1);
+    }
+    print(head2);
+    printf("After merge two linked list:\n");
+    struct node *head=merge(head1,head2);
+    print(head);
+
+    /*printf("After merge two linked list by recursion:\n");
+    struct node *head_rec=merge_rec(head1,head2);
+    print(head_rec);*/
+    return 0;
+}