@Test
public void test7(){
List<Integer> list =Arrays.asList(1,2,3,4,5,6,7,8,9,10);
//10个数相加
Integer reduce =list.stream().reduce(0, (x,y) ->x +y);
System.out.println(reduce);
}

@Test
public void test7(){
List<Integer> list =Arrays.asList(1,2,3,4,5,6,7,8,9,10);
//10个数相加
Integer reduce =list.stream().reduce(0, (x,y) ->x +y);
System.out.println(reduce);
}