java某公司面试题

java面试题
某公司的java面试题（本人菜鸟一枚发出来集思广益供交流参考第一次自己写有点小激动还请大佬留下宝贵建议）

package day14;import org.junit.Test;import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAccessor;
import java.util.ArrayList;/*** @author Tony* @create 2021-08-20 17:07*/
public class Work1 {public String generateSummary(String input)  {int totalIncome = 0;//总收入int dayIncome = 0;//当天收入int payMent = 0;//总支出int daypayment = 0;//当天支出int profit = 0;//总结余int dayprofit = 0;//当天结余StringBuilder totalDayInfo = new StringBuilder();//输出总的信息String regex = " ";String[] info = input.split(regex);ArrayList<String> date = new ArrayList<String>();//存储日期ArrayList<String> hour = new ArrayList<String>();//存储时间段ArrayList<String> numofpeople = new ArrayList<String>();//存储人数for (int i = 0; i < info.length; i++) {if ((i + 1) % 3 == 0) {numofpeople.add(info[i]);} else if ((i + 1) % 3 == 2) {hour.add(info[i]);} else if ((i + 1) % 3 == 1) {date.add(info[i]);}}//获取每天人数 转化为int类型方便后面使用int[] daynumpeople = new int[numofpeople.size()];for (int i = 0; i < daynumpeople.length; i++) {daynumpeople[i] = Integer.parseInt(numofpeople.get(i));}//方法内部类class Method {//订场方法public int bookPolicy(int numpeople) {int T = 0;int X = numpeople % 6;if (numpeople < 4) {} else if (numpeople <= 6) {T = 1;} else if ( numpeople <= 12) {T = 2;} else if (numpeople / 6 == 2 || numpeople / 6 == 3) {if (X >= 4 && numpeople / 6 == 2) {T = 3;} else if (X >= 4 && numpeople / 6 == 3) {T = 4;} else if (numpeople / 6 == 2) {T = 2;} else if (numpeople / 6 == 3) {T = 3;}} else if (numpeople / 6 > 3) {T = numpeople / 6;}return T;}//收费方法public int charge(int dayvalue, int starthour, int endhour) {int chargesite = 0;//每台收的钱int chargesite1 = 0;int chargesite2 = 0;if (dayvalue >= 1 && dayvalue <= 5) {if (starthour >= 9 && endhour <= 12) {chargesite = (endhour - starthour) * 30;} else if (starthour >= 12 && endhour <= 18) {chargesite = (endhour - starthour) * 40;} else if (starthour >= 18 && endhour <= 20) {chargesite = (endhour - starthour) * 80;} else if (starthour >= 20 && endhour <= 22) {chargesite = (endhour - starthour) * 60;} else {if(starthour<12){chargesite1 = (12 - starthour) * 30;chargesite2 = (endhour - 12) * 40;chargesite = chargesite1 + chargesite2;}else if (starthour<18){chargesite1 = (18 - starthour) * 40;chargesite2 = (endhour - 18) * 80;chargesite = chargesite1 + chargesite2;}else if(starthour<20){chargesite1 = (20 - starthour) * 80;chargesite2 = (endhour - 20) * 60;}}} else {if (starthour >= 9 && endhour <= 12) {chargesite = (endhour - starthour) * 40;} else if (starthour >= 12 && endhour <= 18) {chargesite = (endhour - starthour) * 50;} else if (starthour >= 16 && endhour <= 22) {chargesite = (endhour - starthour) * 60;} else {if(starthour<12&&endhour>12){chargesite1 = (12 - starthour) * 40;chargesite2 = (endhour - 12) * 50;chargesite = chargesite1 + chargesite2;}else if(starthour<18&&endhour>18){chargesite1 = (18 - starthour) * 50;chargesite2 = (endhour - 18) * 60;}}}return chargesite;}}Method m = new Method();//方法对象String regex1 = " ";String regex2 = "~";StringBuilder newHour = new StringBuilder();for (String s : hour) {String temp = s + " ";newHour.append(temp);}String[] splitHour = newHour.toString().split(regex1);for (int i = 0; i < splitHour.length; i++) {//每天的信息String[] split = splitHour[i].split(regex2);DateTimeFormatter pattern = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");String temp = date.get(i) + " " + split[0];String temp1 = date.get(i) + " " + split[1];TemporalAccessor parse = pattern.parse(temp);//将日期与小时段拼接 方便获取计算TemporalAccessor parse1 = pattern.parse(temp1);LocalDateTime from = LocalDateTime.from(parse);LocalDateTime from1 = LocalDateTime.from(parse1);int dayvalue = from.getDayOfWeek().getValue();//获取星期几dayIncome = daynumpeople[i] * 30;int i1 = m.bookPolicy(daynumpeople[i]);int charge = m.charge(dayvalue, from.getHour(), from1.getHour());if (daynumpeople[i] < 4) {dayIncome = 0;dayprofit = 0;daypayment = 0;String dayinfo = "" + date.get(i) + " " + hour.get(i) + " +" + dayIncome + "    -" + daypayment + "    " + dayprofit + "!";totalDayInfo.append(dayinfo);continue;}daypayment = i1 * charge;totalIncome = totalIncome + dayIncome;payMent = payMent + daypayment;profit = totalIncome - payMent;dayprofit = dayIncome - daypayment;if(dayprofit<0){String dayinfo = "" + date.get(i) + " " + hour.get(i) + " +" + dayIncome + "  -" + daypayment + " " + dayprofit + "!";totalDayInfo.append(dayinfo);continue;}if(i==splitHour.length-1){//防止在最后一次拼接的时候+上"!"导致后面切割出现换行String dayinfo = "" + date.get(i) + " " + hour.get(i) + " +" + dayIncome + "  -" + daypayment + " -" + dayprofit;totalDayInfo.append(dayinfo);//将每天信息拼接break;}String dayinfo = "" + date.get(i) + " " + hour.get(i) + " +" + dayIncome + "  -" + daypayment + " -" + dayprofit + "!";totalDayInfo.append(dayinfo);//将每天信息拼接}totalDayInfo.append("!").append("Total Income:").append(totalIncome).append("!").append("Total Payment:").append(payMent).append("!").append("Profit:").append(profit);return totalDayInfo.toString();}@Test//单元测试方法public void test1() {String s = generateSummary("2016-06-02 20:00~22:00 7 " +"2016-06-03 09:00~12:00 14 " +"2016-06-04 14:00~17:00 22 " +"2016-06-05 19:00~22:00 3 " +"2016-06-06 12:00~15:00 15 " +"2016-06-07 15:00~17:00 12 " +"2016-06-08 10:00~13:00 19 " +"2016-06-09 16:00~18:00 16 " +"2016-06-10 20:00~22:00 5 " +"2016-06-11 13:00~15:00 11 ");String regex = "!";String[] split = s.split(regex);for (String s1 : split) {System.out.println(s1);}}
}

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