package com;

import dm.jdbc.util.IdGenerator;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

public class test {
    public static void main(String[] args) {

        List<Long> list = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            list.add(IdGenerator.generate());
        }
        List<Long> collect = list.stream().distinct().collect(Collectors.toList());
        System.out.println(collect.size());
    }
}