package com.shrimpking.t3;

import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.Optional;
import java.util.stream.Stream;

/**
 * Created by IntelliJ IDEA.
 *
 * @Author : Shrimpking
 * @create 2024/9/11 18:06
 */
public class ReduceStream
{
    public static void main(String[] args)
    {
        List<Integer> list = Arrays.asList(1,3,5,7,4,6);
        Stream<Integer> stream = list.stream();

        //Integer::max 等价于 (a,b) -> a > b ? a : b
        Optional<Integer> max = stream.reduce(Integer::max);
        System.out.println("最大值为：" + max.get());


        stream = list.stream();
        // （a,b）-> a + b 等价于 Integer::sum
        Integer sum = stream.reduce(10, (a,b) -> a + b);
        System.out.println("累加的和为：" + sum);

    }
}