导出pdf

Author: JavaScalaDeveloper

change/easy-v2023.pdf

@@ -6,7 +6,7 @@ public class MergeMdFiles {
 
     public static void main(String[] args) throws IOException {
         String directory = "D:\\WorkSpaces\\leetcode-all\\solution"; // 修改为目录路径
-        String outputFile = "D:\\WorkSpaces\\leetcode-all\\change\\scripts\\out\\output-file.md"; // 修改为输出文件路径
+        String outputFile = "D:\\WorkSpaces\\leetcode-all\\change\\scripts\\out\\leetcode-1~2000-v2023.md"; // 修改为输出文件路径
 
         File dir = new File(directory);
         if (!dir.exists() || !dir.isDirectory()) {
@@ -25,9 +25,18 @@ private static void mergeMdFiles(File dir, OutputStream os) throws IOException {
             if (file.isDirectory()) {
                 mergeMdFiles(file, os);
             } else if (file.isFile() && file.getName().endsWith(".md")) {
-                FileInputStream fis = new FileInputStream(file);
-                copy(fis, os);
-                fis.close();
+//                忽略solution根目录的文件
+                if (file.getPath().length() > 60) {
+                    String num = file.getPath().substring(46, 50);
+                    int no = Integer.parseInt(num);
+//                    导出前2000道
+                    if (no <= 2000) {
+                        FileInputStream fis = new FileInputStream(file);
+                        copy(fis, os);
+                        fis.close();
+                    }
+
+                }
             }
         }
     }

change/hard-v2023-v2.pdf

@@ -0,0 +1,74 @@
+package change.scripts;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public class MergeMdFilesByLevel {
+    private static final String OUTPUT_PATH = "D:\\WorkSpaces\\leetcode-all\\change\\scripts\\out\\"; // 修改为输出文件路径
+    //题号->难度
+    private static final Map<String, String> num2LevelMap = ParseMenu.getLineData().stream()
+            .collect(Collectors.toMap(ParseMenu.LineData::getA, ParseMenu.LineData::getD));
+
+    public static void main(String[] args) throws IOException {
+        String directory = "D:\\WorkSpaces\\leetcode-all\\solution"; // 修改为目录路径
+
+        File dir = new File(directory);
+        if (!dir.exists() || !dir.isDirectory()) {
+            System.out.println("目录不存在或者不是一个目录");
+            return;
+        }
+        Map<String, FileOutputStream> fileOutputStreamsMap = new HashMap<>();
+//        中等, 困难, 简单
+        fileOutputStreamsMap.put("简单", new FileOutputStream(OUTPUT_PATH + "easy-v2023.md"));
+        fileOutputStreamsMap.put("中等", new FileOutputStream(OUTPUT_PATH + "medium-v2023.md"));
+        fileOutputStreamsMap.put("困难", new FileOutputStream(OUTPUT_PATH + "hard-v2023.md"));
+
+        mergeMdFiles(dir, fileOutputStreamsMap);
+        fileOutputStreamsMap.forEach((s, fileOutputStream) -> {
+            try {
+                fileOutputStream.close();
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        });
+    }
+
+    private static void mergeMdFiles(File dir, Map<String, FileOutputStream> fileOutputStreamsMap) throws IOException {
+        File[] files = dir.listFiles();
+        assert files != null;
+        for (File file : files) {
+            BasicFileAttributes basicFileAttributes = Files.readAttributes(file.toPath(), BasicFileAttributes.class);
+            if (basicFileAttributes.isDirectory()) {
+                mergeMdFiles(file, fileOutputStreamsMap);
+            } else if (basicFileAttributes.isRegularFile() && file.getName().endsWith(".md")) {
+                FileInputStream fis = new FileInputStream(file);
+                String path = file.getPath();
+                if (path.length() > 50) {
+//                    题号
+                    String num = path.substring(46, 50);
+//                    难度
+                    String level = num2LevelMap.get(num);
+                    FileOutputStream os = fileOutputStreamsMap.get(level);
+                    if (os != null) {
+                        System.out.println(num + "-->" + level);
+                        copy(fis, os);
+                    }
+                }
+                fis.close();
+            }
+        }
+    }
+
+    private static void copy(InputStream is, OutputStream os) throws IOException {
+        byte[] buffer = new byte[4096];
+        int len;
+        while ((len = is.read(buffer)) != -1) {
+            os.write(buffer, 0, len);
+        }
+    }
+
+}

change/hard-v2023.pdf

@@ -9,19 +9,26 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 public class ParseMenu {
     public static void main(String[] args) {
-        List<String> lines = readLines("change/scripts/input/menu.txt");
-        List<LineData> lineData = parseLines(lines);
+        List<LineData> lineData = getLineData();
         Map<String, String> num2LevelMap = lineData.stream().collect(Collectors.toMap(LineData::getA, LineData::getD));
         System.out.println(num2LevelMap);
         Map<String, List<LineData>> collect = lineData.stream().collect(Collectors.groupingBy(LineData::getD));
+        Set<String> levelSet = lineData.stream().map(LineData::getD).collect(Collectors.toSet());
+        System.out.println(levelSet);
 //        System.out.println(collect);
     }
 
-    private static class LineData {
+    public static List<LineData> getLineData() {
+        List<String> lines = readLines("change/scripts/input/menu.txt");
+        return parseLines(lines);
+    }
+
+    public static class LineData {
         private String a;
         private String b;
         private String c;