# INSERT-SPECIFIC-LL hackerrank Solution - Correct, Optimal and Working

``````/*
*  Author: Arpit Bhayani
*  https://arpitbhayani.me
*/
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <climits>
#include <deque>
#include <iostream>
#include <list>
#include <limits>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <vector>

#define ll long long

#define MIN(a, b) a < b ? a : b
#define MAX(a, b) a > b ? a : b

using namespace std;

int i = 0;
char ch;
while((ch = getchar()) != '\n') {
str[i++] = ch;
}
str[i] = '\0';
return i;
}

struct Node {
int data;
struct Node *next;
};

while(p) {
printf("%d\n", p->data);
p = p->next;
}
}

struct Node * new_node(int v) {
struct Node * p = (struct Node *) calloc(1, sizeof(struct Node));
p->data = v;
return p;
}

struct Node * InsertNth(Node *head, int data, int position) {
struct Node * p = head;
struct Node * t = new_node(data);

if(p == NULL && position == 0) {
return t;
}

if(position == 0) {
return t;
}

while(--position) {
p = p->next;
}
t->next = p->next;
p->next = t;

}

int main(int argc, char *argv[]) {
struct Node * head = new_node(3);