负数的四舍五入

标签:基础

System.out.println(Math.round(-0.2));
System.out.println(Math.round(-0.5));
System.out.println(Math.round(-0.6));

0
0
-1

理解:四舍五入,找一个离目标小数近的整数,-0.2和0近,-0.6和-1近,中间的往右靠