Zhao zheng

CountMostImport/CountMostImport.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

CountMostImport/src/com/qunar/homework/CountMostImport.java

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+package com.qunar.homework;
+
+import   java.io.*;
+import java.util.*;
+
+
+//以下import类作为测试用
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Executable;
+import java.lang.reflect.Executable;
+import java.lang.reflect.Executable;
+import java.lang.Integer;
+import java.lang.Integer;
+import java.io.BufferedReader;
+import java.io.Reader;
+import java.io.ByteArrayInputStream;
+import java.io.CharArrayReader;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.ServiceConfigurationError;
+import java.util.Set;
+
+/**
+ * Created by Jerry on 6/26/2016.
+ */
+public class CountMostImport {
+
+    public static void main(String[] args) {
+
+        //获取目录下的所有Java文件
+        String add = "src";
+        File file = new File(add);
+        JavaFiles jf = new JavaFiles();
+        jf.getFileLists(file);
+        List<String> javaFiles = jf.getFileLists();
+
+        //统计类与次数键值对
+        Map<String,Integer> map = new HashMap<String,Integer>();
+
+
+        BufferedReader bf=null;
+        for (String str :  javaFiles) {
+           // System.out.println("args = [" + str + "]");
+            File javaFile = new File(str);
+            try {
+              bf = new BufferedReader(new FileReader(new File(str)));
+            } catch (FileNotFoundException e) {
+                System.out.println("读入文件错误...");
+            }
+
+            String line = null;
+            try {
+                while((line=bf.readLine())!=null)
+                {
+                    if(line.trim().startsWith("import")&&!(line.endsWith("*;")))
+                    {
+                        String [] split = line.trim().split(" ");
+                        System.out.println("args = [" + split[1] + "]");
+                        String importClass = split[1].trim().substring(0,split[1].trim().length()-1);
+                        Integer count = map.get(importClass);
+                        map.put(importClass,count==null?1:count+1);
+                    }
+                }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+
+        }
+
+
+        //sort
+        List<Map.Entry<String, Integer>> infoIds =
+                new ArrayList<>(map.entrySet());
+        Collections.sort(infoIds, new Comparator<Map.Entry<String, Integer>>() {
+            public int compare(Map.Entry<String, Integer> o1, Map.Entry<String, Integer> o2) {
+                int value = (o2.getValue()).compareTo(o1.getValue());
+                if(value==0)   //如果import次数相等则按类名字典序
+                    return (o1.getKey()).compareTo(o2.getKey());
+                else
+                    return value;
+            }
+        });
+
+
+        //按次序输出
+        int freqRank = 0;
+        while(freqRank<10&&freqRank<infoIds.size())
+        {
+            Map.Entry<String, Integer> entry = infoIds.get(freqRank);
+            String className = entry.getKey();
+            System.out.println(className+"   "+entry.getValue());
+
+            freqRank++;
+        }
+
+
+    }
+}

CountMostImport/src/com/qunar/homework/JavaFiles.java

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+package com.qunar.homework;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Created by Jerry on 6/26/2016.
+ */
+public class JavaFiles {
+    private List<String> fileLists;
+
+
+    public JavaFiles() {
+        fileLists = new ArrayList<String>();
+    }
+
+    public void getFileLists(File file)
+    {
+        if(file==null) return;
+        File[] files = file.listFiles();
+        if(files==null)
+            return;
+        for (File f:files) {
+            if(f.isDirectory()){
+                getFileLists(f);
+            }
+            else
+            {
+                if(isJavaFile(f))
+                {
+                    fileLists.add(f.getPath());
+
+
+                }
+            }
+        }
+    }
+
+    public List<String> getFileLists() {
+        return fileLists;
+    }
+
+    public boolean isJavaFile(File file)
+    {
+        boolean result = false;
+        String str = file.getPath();
+        if(str.endsWith(".java"))
+            result = true;
+
+        return result;
+    }
+}

CountMostImport/src/com/qunar/homework/Test.java

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+package com.qunar.homework;
+
+/**
+ * Created by Jerry on 6/26/2016.
+ */
+
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Executable;
+import java.lang.reflect.Executable;
+import java.lang.reflect.Executable;
+import java.lang.Integer;
+import java.lang.Integer;
+import java.io.BufferedReader;
+import java.io.Reader;
+import java.io.ByteArrayInputStream;
+import java.io.CharArrayReader;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.ServiceConfigurationError;
+import java.util.Set;
+
+
+
+public class Test {
+}

EffectiveLines/EffectiveLines.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
+

EffectiveLines/src/Test.java

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+/* Created by Jerry on 6/22/2016.*/
+
+
+import java.util.Scanner;
+/*Jerry*/
+public class Test {
+    //test
+    public static void main(String [] args){
+        System.out.println("��������Ҫ�����ַ���:");
+        Scanner s = new Scanner(System.in);
+        String str = s.next();
+        s.close();
+        int start = 0;
+        int end = str.length()-1;
+        while(str.charAt(start)==str.charAt(end)){
+            start ++;
+            end--;
+            if(start>end){
+                System.out.println("Yes");
+                break;
+            }
+
+        }
+        if(start<end){
+            System.out.println("No");
+        }
+    }
+}
+

EffectiveLines/src/com/qunar/homework/EffectiveLines.java

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+package com.qunar.homework;
+
+import java.io.*;
+
+/**
+ * Created by Jerry on 6/27/2016.
+ */
+public class EffectiveLines {
+    static int codeLines = 0;
+    public static void main(String[] args) {
+        File file = new File("src/Test.java");
+        computeLines(file);
+        System.out.println("EffectiveLines is "+codeLines);
+    }
+
+    public static void computeLines(File file)
+    {
+        BufferedReader bf = null;
+        try {
+            bf = new BufferedReader(new FileReader(file));
+            String line = "";
+            while((line=bf.readLine())!=null)
+            {
+                if(line.trim().equals(""))
+                    continue;
+                else if(line.trim().startsWith("//")||line.trim().startsWith("/*"))
+                    continue;
+                codeLines++;
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+}

ExchangeRate/ExchangeRate.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/Lib/jsoup-1.9.2.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/Lib/jxl.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>