题解 | #取近似值#

package com.company.niuke;

import java.util.Scanner;

/**
 * @ProjectName: leetcode
 * @Package: com.company.niuke
 * @ClassName: JinSiZhi
 * @Author: Administrator
 * @Description: 近似值
 * @Date: 2022/2/16 21:03
 * @Version: 1.0
 */
public class JinSiZhi {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        try {
            Float num = scanner.nextFloat();

            if ((num * 10) % 10 >= 5) {
                System.out.println((int) Math.ceil(num));  //math.ceil()向上取整。
            } else {
                System.out.println((int) Math.round(num)); //math.round() 四舍五入
            }
        }catch (Exception e) {
            throw new RuntimeException("类型转换出错",e);
        }
    }
}