I am trying to make binary search in ArrayList, but the binarySearch method does not work for Long, as well as Double and Float. My code is
import java.util.*;
public class BinarySearchInArrayList{
public static void main(String[]args){
ArrayList<Long> ar = new ArrayList();
for(long l = 1;l<100000;l++){
ar.add(l);
}
System.out.println("arraylist: "+ar);
System.out.println("Which number's index do you want to know? ");
Scanner scan = new Scanner(System.in);
int p = scan.nextInt();
int index = Collections.binarySearch(ar,p);
System.out.println("number "+p+" has index "+index);
}
When I use Integer instead of Long, it works fine, but I want to make it with Long. Can you help me, please?
