package zzzTest;

import org.apache.commons.collections4.CollectionUtils;

import java.io.BufferedReader;

import java.io.FileReader;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.*;

public class MapTest {

public static void main(String[] args) throws Exception {

Solution();

}

public static void Solution() throws Exception {

String deskPath = "/Users/nibnait/Desktop/";

Map<Integer, String> textMap = new HashMap<>();//行号、文字

Map<Integer, ArrayList<Integer>> lineNumberMap = new TreeMap<>();//数字、行号

ArrayList<Integer> sortedLineNumberList = new ArrayList<>();

BufferedReader bufferedReader = null;

StringBuilder text = new StringBuilder();

String tempString = null;

int lineNo = 1;

try {

System.out.println("以行为单位读取文件内容，一次读一整行：");

bufferedReader = new BufferedReader(new FileReader(deskPath+"in.txt"));

// 一次读入一行，直到读入null为文件结束

while ((tempString = bufferedReader.readLine()) != null) {

System.out.println("lineNo " + lineNo + ": " + tempString);

textMap.put(lineNo, tempString);

StringBuilder sb = new StringBuilder();

char[] chars = tempString.toCharArray();

for (int i = 0; i < chars.length; i++) {

if (Character.isDigit(chars[i])) {

sb.append(chars[i]);

}

}

int number = Integer.valueOf(sb.toString());

ArrayList<Integer> numberList = lineNumberMap.get(number);

if (CollectionUtils.isNotEmpty(numberList)) {

numberList.add(lineNo);

lineNumberMap.put(number, numberList);

} else {

ArrayList<Integer> list = new ArrayList<>();

list.add(lineNo);

lineNumberMap.put(number, list);

}

lineNo++;

}

TreeMap<Integer, ArrayList<Integer>> treeMap = new TreeMap<>(lineNumberMap);

for (Map.Entry<Integer, ArrayList<Integer>> entry : treeMap.entrySet()) {

// System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());

ArrayList<Integer> arrayList = entry.getValue();

for (Integer j : arrayList) {

text.append(textMap.get(j) + "\n");

}

}

bufferedReader.close();

//写文件

Path filePath = Paths.get(deskPath+"out.txt");

// FileOutputStream fileOutputStream = new FileOutputStream(text.toString());

// Files.createFile(filePath);

Files.write(filePath, text.toString().getBytes());

} catch (Exception e) {

e.printStackTrace();

} finally {

if (bufferedReader != null) {

try {

bufferedReader.close();

} catch (IOException e1) {

}

}

}

}

}