Why is my program accepting and printing 1 less inputs than the entered length?

Question

import java.util.*;
public class Program
{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
String ar[]=new String[n];
int a=1;
for(int i=0;i<n;i++){
ar[i]=sc.nextLine();
}
for(int i=0;i<n;i++){
System.out.println(ar[i]);
}
}
}

Answer 1

Try it with n +=1 and "i <= n;".