帮忙用java基础语言编写一个程序 要求如下 请用java语言设计一个程序完成如下要求
\u7528Java\u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u8981\u6c42\u5982\u4e0b\u4f60\u8fd9\u4e2a\u9898\u76ee\u51fa\u5f97\u4e0d\u5927\u5408\u7406\u554a
\u8f93\u51fa\u4e2a\u4eba\u4fe1\u606f\u4e0d\u9700\u8981\u8fd4\u56de\u503c\u548c\u5faa\u73af\u8bed\u53e5
import java.util.ArrayList;import java.util.List;public class SubNumber { public static void print(List list){ for(int i = 0;i array, int size) { if (array.size() == (size - 1)) { array.add(sum); // \u60f3\u8981\u7684\u6570\u7ec4 print(array); count++; } else { for (int i = 0; i subarray = new ArrayList(); subarray.addAll(array); subarray.add(i); int subsum=sum-i; subNaturalNumber(subsum, subarray, size); } } } public static void main(String[] args) { ArrayList list = new ArrayList(); subNaturalNumber(16, list, 14);//\u8ba1\u7b97\u51fd\u6570\uff0c16\u5206\u89e3\u621014\u4e2a\u6570\u5b57\uff0c\u5176\u4ed6\u8bf7\u81ea\u884c\u4fee\u6539\u53c2\u6570 System.out.println(count);//\u7edf\u8ba1\u591a\u5c11\u79cd\u7ed3\u679c }}
//\u7531\u4e8e\u8fd0\u884c\u65f6\u95f4\u8f83\u957f\uff0c\u7ed3\u679c\u53ea\u622a\u90e8\u5206\u3002\u6700\u540e16\u768414\u9879\u5206\u89e3\u517167863915\u79cd\uff0c15\u768414\u9879\u5206\u89e3\u517137442160\u79cd\u3002
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.LinkedList;
import java.util.List;
public class QuestionOne {
/**
* 打开一个文本文件，每次读取一行内容。将每行作为一个String读入，
* 并将那个String对象置入一个Linkedlist中。按相反的顺序打印出Linkedlist中所有的行。
* 同样也打开一个文本文件，以便将文本写入其中。将Linkedlist中的各行随同行号一起写入文件。 很急 请高手帮帮忙啊。！！！！！！！！！！！！！
*
* @throws IOException
*/
public static void main(String[] args) {
String inputFilePath = "c:/c.txt";
String outputFilePath = "c:/output.txt";
File inputFile = new File(inputFilePath);
if (!inputFile.exists()) {
System.out.println("输入文件不存在:" + inputFilePath);
return;
}
List<String> strs = new LinkedList<String>();
// 读取文件中的内容到List中
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
new FileInputStream(inputFile)));
String lineString = null;
while ((lineString = reader.readLine()) != null) {
strs.add(lineString);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
System.out.println("输入文件不存在:" + inputFilePath);
return;
} catch (IOException e) {
e.printStackTrace();
return;
}
// 逆向输出
System.out.println("逆向**start***");
for (int i = strs.size() - 1; i >= 0; i--) {
System.out.println(strs.get(i));
}
System.out.println("逆向**end***");
try {
PrintWriter writer = new PrintWriter(outputFilePath);
// 输出到文件
for (int i = 0; i < strs.size(); i++) {
writer.print(i);
writer.println(strs.get(i));
}
writer.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
不要急，帮你写，周一给你，你不留个邮箱？
//主要功能做出来
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.LinkedList;
public class JieXi {
private LinkedList list = new LinkedList();
private String sourcePath;
private String targetPath;
public void setSourcePath(String sourcePath) {
this.sourcePath = sourcePath;
}
public void setTargetPath(String targetPath) {
this.targetPath = targetPath;
}
public void setList() {
FileReader fr;
try {
File file = new File(sourcePath);
Runtime.getRuntime().exec("notepad " + sourcePath);
fr = new FileReader(file);
BufferedReader br = new BufferedReader(fr);
while (true) {
String linestr = br.readLine();
if (linestr != null) {
list.add(linestr);
} else
break;
}
br.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void intoTxtFile() {
try {
ToFile tf = new ToFile(targetPath);
tf.newFile();
setList();
for (int i = list.size(); i > 0; i--) {
tf.toTxtFile("[" + i + "]" + (String) list.get(i - 1) + "\r\n");
}
tf.close();
Runtime.getRuntime().exec("notepad " + targetPath);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws FileNotFoundException {
JieXi jx = new JieXi();
jx.setSourcePath("D:\\4.txt");
jx.setTargetPath("D:\\2.txt");
jx.intoTxtFile();
}
}
/**
* 写入TXT文件类
*/
class ToFile {
private String filename = "D:\\default.txt";
private File file;
private PrintWriter pw;
public ToFile() throws FileNotFoundException {
newFile();
pw = new PrintWriter(file);
}
public ToFile(String filename) throws FileNotFoundException {
this.filename = filename;
newFile();
pw = new PrintWriter(file);
}
public void newFile() {
file = new File(filename);
if (!file.exists())
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
public void toTxtFile(String str) {
pw.write(str);
}
public void close() {
pw.flush();
pw.close();
}
}
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绛旓細import java.util.Scanner;public class StudentTest {public static void main(String[] args) {Student student = new Student();Scanner sc = new Scanner(System.in);System.out.println("璇疯緭鍏ュ鍚嶏細");student.setName(sc.next());System.out.println("璇疯緭鍏ユу埆锛");student.setSex(sc....
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绛旓細student.isPass();}}2銆佸鐢熺被public class Student {/** * 鐢╦ava璇█缂栧啓缂栧啓涓涓绫籗tudent锛屾弿杩板鐢熺殑瀛﹀彿銆佸鍚嶅拰鎴愮哗銆傚鍙风敤long锛屾垚缁╃敤float锛屽鍚嶇敤String銆傚鐢熸嫢鏈夊垽鏂嚜宸辩殑鎴愮哗鏄惁鍙婃牸鐨勫姛鑳斤紙鏂规硶鍚嶏細isPass()锛夈傚苟鑳藉鎵撳嵃杈撳嚭鑷繁鐨勫鍚嶅強鏄惁鍙婃牸淇℃伅锛堟柟娉曞悕锛歱rintInfo()锛夈傞拡瀵筍t...
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绛旓細import java.util.LinkedList;import java.util.List;public class QuestionOne { / 鎵撳紑涓涓鏂囨湰鏂囦欢锛屾瘡娆¤鍙栦竴琛屽唴瀹广傚皢姣忚浣滀负涓涓猄tring璇诲叆锛屽苟灏嗛偅涓猄tring瀵硅薄缃叆涓涓狶inkedlist涓傛寜鐩稿弽鐨勯『搴忔墦鍗板嚭Linkedlist涓墍鏈夌殑琛屻傚悓鏍蜂篃鎵撳紑涓涓枃鏈枃浠讹紝浠ヤ究灏嗘枃鏈啓鍏ュ叾涓傚皢Linkedlist涓殑鍚勮闅忓悓...
绛旓細import java.util.Scanner;public class T {public static void main(String[] args) throws Exception {Scanner in = new Scanner(System.in);int difficulty;//闅惧害int mode;//杩愮畻绫诲瀷int answer;//绛旀int amount;//鎸戞垬棰樼洰鏁伴噺int score = 0;//寰楀垎System.out.println("璇疯緭鍏ラ毦搴︼紙1锛氫竴...
绛旓細tf1.setText(""); addmyMenu(); } public void addmyMenu() { mb1 = new MenuBar(); //鐢熸垚涓涓鑿滃崟鏍 f.setMenuBar(mb1); //妗嗘灦f涓婃坊鍔犺彍鍗曟爮 mf1 = new Menu("缂栬緫(E)"); //鐢熸垚涓涓彍鍗 me1 = new Menu("鏌ョ湅(V)"); mh1 = new Menu("甯姪(H)"); mb1.add(mf1); //鑿滃崟...
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