9.11

关于美女选秀
list做法

package com.zhongruan;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Test4 {
    public List<Integer> getHighs() {
        List<Integer> highs = new ArrayList<>();
        highs.add(180);
        highs.add(170);
        highs.add(150);
        return highs;
    }

    public List<Integer> getwights() {
        List<Integer> wights = new ArrayList<>();
        wights.add(50);
        wights.add(90);
        wights.add(55);
        return wights;
    }

    public Map<String, Integer> getSumHAndSumW(List<Integer> highs, List<Integer> wights) {

        //增强for循环
        int sumH = 0;
        for (int h : highs) {
            sumH = sumH + h;
        }
        System.out.println(sumH);

        int sumW = 0;
        for (int w : wights) {
            sumW = sumW + w;
        }
        System.out.println(sumW);
        Map map = new HashMap();
        map.put("sgh", sumH);
        map.put("tzh", sumW);
        return map;
    }

    public Map<String, Integer> getAvg(Map<String, Integer> map) {
        int sumH = map.get("sgh");
        int sumW = map.get("tzh");
        int avgH = sumH / 3;
        int avgW = sumW / 3;


        Map<String, Integer> avgMap = new HashMap<>();
        avgMap.put("pjsg", avgH);
        avgMap.put("pjtz", avgW);
        return avgMap;
    }

    public String getResult(Map<String, Integer> avgM) {
        int avgH = avgM.get("pjsg");
        int avgW = avgM.get("pjtz");
        if (avgH > 150 && avgW < 100) {
            return "是美女";
        } else {
            return "不是美女";
        }

    }

    public static void main(String[] args) {
      /*  a.从浙江工贸选10个美女

        null 2019/9/10 16:51:19
        b.计算10个美女的身高和 和 体重和

        null 2019/9/10 16:51:38
        b 计算10美女的平均身高和平均体重

        null 2019/9/10 16:52:29
        d 判断这批美女是否合格  平均身高》150  平均体重《200*/
        Test4 test4 = new Test4();
        List<Integer> hights = test4.getHighs();
        List<Integer> wights = test4.getwights();
        Map<String, Integer> map = test4.getSumHAndSumW(hights, wights);
        Map<String, Integer> avgM = test4.getAvg(map);
        String s = test4.getResult(avgM);
        System.out.println(s);


    }
}

数组

package com.zhongruan;

import java.util.ArrayList;

public class xuanxiu {

    public static void main(String[] args) {
        int[] array = new int[]{170, 171, 172, 155, 150, 169, 190, 144, 188, 120};
        int[] array1 = new int[]{170, 220, 172, 155, 150, 230, 200, 144, 188, 120};
        double sum = 0;
        double sum1 = 0;
        for (int i = 0; i < array.length; i++) {
            sum += array[i];
        }
        double avg = sum / array.length;
        for (int i = 0; i < array1.length; i++) {
            sum1 += array1[i];
        }
        double avg1 = sum1 / array1.length;
        System.out.println(avg);
        System.out.println(avg1);
       if (avg>=150&&avg1<=200){
           System.out.println("是美女");
       }else
           {System.out.println("bu是美女");}
    }
}