题解 | #衡量人体胖瘦程度#

import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        while(scan.hasNextInt()) {
            int weight = scan.nextInt();
            int height = scan.nextInt();
            double BMI = weight / Math.pow(height * 1.0 / 100, 2);
            
            //此处虽然可以用if语句实现，但是为了让代码更好，可以采用表驱动法
            double[] BMItable = { 18.5, 23.9, 27.9, 100};
            String[] degree = { "Underweight", "Normal", "Overweight", "Obese"};
            for(int i = 0; i < 4; i++) {
                if(BMI < BMItable[i]) {
                    System.out.println(degree[i]);
                    break;
                }
            }
        }
    }
}