package org.jimmy.autosearch2019.pojo;

import java.math.BigDecimal;

public class TestEntity20190402 {

    private Integer time;

    private BigDecimal discountMoney;

    public Integer getTime() {

        return time;

    }

    public void setTime(Integer time) {

        this.time = time;

    }

    public BigDecimal getDiscountMoney() {

        return discountMoney;

    }

    public void setDiscountMoney(BigDecimal discountMoney) {

        this.discountMoney = discountMoney;

    }

}

package org.jimmy.autosearch2019.test;

import java.math.BigDecimal;

import java.util.ArrayList;

import org.jimmy.autosearch2019.pojo.TestEntity20190402;

/**

 * @author ラピスラズリ(Dawn)

 * @date 2019年4月2日 上午11:15:39

 * @detail 循环扣减demo

 */

public class Test20190402 {

    public static ArrayList<TestEntity20190402> list = new ArrayList<TestEntity20190402>(); 

    static {

        TestEntity20190402 testEntity = new TestEntity20190402();

        testEntity.setTime(1);

        testEntity.setDiscountMoney(new BigDecimal(100));

        list.add(testEntity);

        testEntity = new TestEntity20190402();

        testEntity.setTime(5);

        testEntity.setDiscountMoney(new BigDecimal(10));

        list.add(testEntity);

        testEntity = new TestEntity20190402();

        testEntity.setTime(3);

        testEntity.setDiscountMoney(new BigDecimal(20));

        list.add(testEntity);

        testEntity = new TestEntity20190402();

        testEntity.setTime(2);

        testEntity.setDiscountMoney(new BigDecimal(50));

        list.add(testEntity);

    }

    public static void main(String[] args) {

        sort();

        TestEntity20190402 getMiniTestEntity = getMiniTimeTestEntity();

        BigDecimal total = new BigDecimal(155);

        ArrayList<TestEntity20190402> tempList = new ArrayList<TestEntity20190402>();

        while((total = total.subtract(getMiniTestEntity.getDiscountMoney())).intValue() > 0) {

            tempList = new ArrayList<TestEntity20190402>();

            for(int i = 1; i < list.size(); i++) {

                tempList.add(list.get(i));

            }

            list = tempList;

            getMiniTestEntity = getMiniTimeTestEntity();

        }

        BigDecimal currentDiscountMoney = null;

        if(total.intValue() < 0) {

            total = total.add(getMiniTestEntity.getDiscountMoney());

            currentDiscountMoney = getMiniTestEntity.getDiscountMoney();

        }

        System.out.println(total.intValue());

        System.out.println(currentDiscountMoney.intValue());

    }

    public static TestEntity20190402 getMiniTimeTestEntity() {

        /*for(int i = 0; i < list.size(); i++) {

            System.out.println(list.get(i).getTime() + "," + list.get(i).getDiscountMoney());

        }*/

        //获取第一个就是时间最早的

        TestEntity20190402 testEntity = list.get(0);

        return testEntity;

    }

    public static void sort() {

        for(int i = 0; i < list.size(); i++) {

            for(int j = i + 1; j < list.size(); j++) {

                TestEntity20190402 outerTestEntity = list.get(i);

                TestEntity20190402 innerTestEntity = list.get(j);

                if(innerTestEntity.getTime() < outerTestEntity.getTime()) {

                    list.set(i, innerTestEntity);

                    list.set(j, outerTestEntity);

                }

            }

        }

    }

}