第2周个人作业：WordCount

    //向文件写入字符串
    public static void writeFile(String str,String outFilePath) 
    //将文本内容读取为一个字符串
    public static String readFile(String filePath) 
    //利用FileInputStream与Scanner计算行数
    public static int calLine(String filePath) throws FileNotFoundException
    //计算单词数
    public static int calWord(String str)
    //计算字符数
    public static int calChar(String str)　　

　　//主函数，目前只实现了基本功能
    public static void main(String[] args) throws FileNotFoundException

//主函数，目前只实现了基本功能
    public static void main(String[] args) throws FileNotFoundException {
        // TODO Auto-generated method stub
        int charNum,lineNum,wordNum,argc=args.length;
        //String filePath="C:\\Users\\chase_mengdi\\Desktop\\file.txt";
        String op,filePath,outFilePath,str;


        System.out.println("参数数量："+argc);
        //倒数第二个参数不为“-o”，即默认输出到根目录下result.txt
        if (!args[argc-1].equals("-o")) {
            filePath = args[argc];
            outFilePath="result.txt";
            str=readFile(filePath);
            //System.out.println("文本字符串："+str);
            //System.out.println("filepath is "+filePath);
            charNum=calChar(str);
            lineNum=calLine(filePath);
            wordNum=calWord(str);
            writeFile(filePath,outFilePath);
            //System.out.println("源文件路径成功写入！\n");
            //循环读取参数，计算行数、单词数、字符数
            for (int i = 1; i < argc+1; i++) {
                op = args[i];
                System.out.println("args["+i+"] is "+ args[i]);
                if (op.equals("-c")) {
                    System.out.println("字符数："+charNum);
                    writeFile("字符数："+charNum,outFilePath);
                    //System.out.println("字符数成功写入！");
                }
                if (op.equals("-l")) {
                    System.out.println("行数："+lineNum);
                    writeFile("行数："+lineNum,outFilePath);
                    //System.out.println("行数成功写入！");
                }
                if (op.equals("-w")) {
                    System.out.println("单词数："+wordNum);
                    writeFile("单词数："+wordNum,outFilePath);
                    //System.out.println("单词数成功写入！");
                }
            }
        }

//利用FileInputStream与Scanner计算行数
    public static int calLine(String filePath) throws FileNotFoundException{
        int lineNum=0;
        File file = new File(filePath);
        FileInputStream fis = new FileInputStream(file);
        Scanner scanner = new Scanner(fis);
        while(scanner.hasNextLine()){
            scanner.nextLine();
            lineNum++;
        }
        return lineNum;
    }
    //计算单词数
    public static int calWord(String str){
        int wordNum = 0;
        String c,lastC=" ";
        for(int i=0;i<str.length();i++){
            c=str.substring(i, i+1);
            if(c.equals("/")){
                c=str.substring(i, i+2);
                i++;
            }
            //System.out.println(i+"="+c);
            //当前字符不为分隔符，且上一字符为分隔符
            if(((!c.equals(","))||(!c.equals(" "))||(!c.equals("/n"))
                    &&(lastC.equals(",")||lastC.equals(" ")||lastC.equals("/n"))))
                wordNum++;
            lastC=c;
        }
        return wordNum;
    }
    //计算字符数
    public static int calChar(String str){
        return str.length();
    }

Your Excellencies, UN secretary general, president of the general assembly,
executive director of UN Women, and distinguished guests.
Today, we are launching a campaign called HeForShe.
I'm reaching out to you because we need your help.
We want to end gender inequality
and to do this, we need everyone involved.
This is the first campaign of its kind at the UN.
We want to try and galvanize as many men and boys as possible to be advocates for change
and we don't just want to talk about it.
We want to try and make sure that it's tangible.
//www
/*
我是注释，你会统计我吗？
*/
{//
}//

（1）wc.exe -c file.txt
（2）wc.exe -s file.txt -o result_1.txt
（3）wc.exe -w file.txt
（4）wc.exe -a file.txt -o result_1.txt
（5）wc.exe -l file.txt
（6）wc.exe -e file.txt -o result_1.txt
（7）wc.exe -w -l  file.txt
（8）wc.exe -w -l  file.txt -o result_1.txt
（9）wc.exe -w -c file.txt
（10）wc.exe -w -e file.txt -o result_1.txt
（11）wc.exe -l -c file.txt
（12）wc.exe -l -c -s file.txt -o result_1.txt
（13）wc.exe -w -c -l file.txt
（14）wc.exe -w -c -a file.txt -o result_1.txt