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61 lines
2.6 KiB
61 lines
2.6 KiB
package com.dky.calculate;
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import com.dky.utils.entity.DevSpec;
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import com.dky.utils.entity.DevPrice;
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import com.dky.utils.result.MatchedDevice;
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import com.dky.utils.result.MatchedDeviceResult;
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import java.util.*;
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public class RequireDevice {
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public static MatchedDeviceResult matchDevices(double demandCapacity,List<DevSpec> deviceList,List<DevPrice> priceList) {
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// 对设备按照容量从大到小排序
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deviceList.sort((d1, d2) -> Double.compare(d2.getCapacity(), d1.getCapacity()));
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double remainingCapacity = demandCapacity;
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double totalPrice = 0;
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List<MatchedDevice> matchedDevices = new ArrayList<>();
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// 遍历设备列表.根据需求容量匹配设备
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for (DevSpec spec : deviceList) {
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if (spec.getCapacity() <= remainingCapacity) {
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int count = (int) Math.floor(remainingCapacity / spec.getCapacity());
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remainingCapacity = remainingCapacity - (spec.getCapacity() * count);
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matchedDevices.add(new MatchedDevice(spec, count));
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if (count > 0) {
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DevPrice price = priceList.stream()
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.filter(p -> p.getId().equals(spec.getId()))
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.findFirst()
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.orElse(null);
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if (price != null) {
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double devicePrice = price.getDevPrice() * count;
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totalPrice += devicePrice;
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}
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}
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}else {
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for (int i = deviceList.size()-1; i >= 0; i--){
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if (deviceList.get(i).getCapacity() >= remainingCapacity){
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matchedDevices.add(new MatchedDevice(deviceList.get(i), 1));
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int finalI = i;
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DevPrice price = priceList.stream()
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.filter(p -> p.getId().equals(deviceList.get(finalI).getId()))
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.findFirst()
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.orElse(null);
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if (price != null) {
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double devicePrice = price.getDevPrice();
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totalPrice += devicePrice;
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}
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break;
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}
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}
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break;
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}
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if (remainingCapacity <= 0) {
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break; // 当总容量已经满足需求时，跳出循环，不再选择其他设备
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}
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}
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return new MatchedDeviceResult(matchedDevices, Math.round(totalPrice*100.0)/100.0);
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}
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}
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