一天一个题 关于解析文件 100分

[断点]

要求：
统计文件中各个数字和英文字母各自的数量，区分大小写
并将Map中的结果写入目标文件中
方法名：filePath 源文件路径 destPath 目标文件路径
public boolean parse(String filePath, String destPath);

实现代码越少就给分

[望舒]

你技术分太低了,害怕是作业帖.....

[TKD03072010]

楼上分析的有道理
...
恐怕又见作业帖...

[飞跃颠峰]

	public static boolean parse(String filePath, String destPath) {
		try {
			File file = new File(filePath);
			byte[] bs = new byte[(int)file.length()];
			new FileInputStream(file).read(bs);
			int[] is = new int[128];
			for (int i=0; i<bs.length; i++) 
				if (bs[i]>=0) is[(int)bs[i]]++;
			RandomAccessFile o = new RandomAccessFile(destPath,"rw");
			for (int i='0'; i<='9'; i++) o.writeBytes((char)i + " " + is[i] + "\r\n");
			for (int i='A'; i<='Z'; i++) o.writeBytes((char)i + " " + is[i] + "\r\n");
			for (int i='a'; i<='z'; i++) o.writeBytes((char)i + " " + is[i] + "\r\n");
			o.close();
		} catch (Exception e) {return false;}
		return true;
	}

[qybao]

借用LS的代码

public static boolean parse(String filePath, String destPath) {
        try {
            File file = new File(filePath);
            byte[] bs = new byte[(int)file.length()];
            new FileInputStream(file).read(bs);
            String s = new String(bs);            
            RandomAccessFile o = new RandomAccessFile(destPath,"rw");
            for (int i='0'; i<='9'; i++) o.writeBytes((char)i + " " + s.length()-s.replaceAll((char)i+"", "").length() + "\r\n");
            for (int i='A'; i<='Z'; i++) {
                o.writeBytes((char)i + " " + s.length()-s.replaceAll((char)i+"", "") + "\r\n");
                o.writeBytes((char)(i+32) + " " + s.length()-s.replaceAll((char)(i+32)+"", "") + "\r\n");
            }
            o.close();
        } catch (Exception e) {return false;}
        return true;
    }

[liangtu]

3楼是实力派，我很坚信；

[TKD03072010]

测试成功！！！

import java.io.File;
import java.io.FileInputStream;
import java.io.RandomAccessFile;

public class ParseFile {
	public static void main(String[] args) {
		String filePath = "filePath.txt";
		String destPath = "filePath2.txt";
		parse(filePath, destPath);
	}
	
	public static boolean parse(String filePath, String destPath) {
        try {
            File file = new File(filePath);
            byte[] bs = new byte[(int)file.length()];
            new FileInputStream(file).read(bs);
            String s = new String(bs);            
            RandomAccessFile o = new RandomAccessFile(destPath,"rw");
            for (int i='0'; i<='9'; i++) o.writeBytes((char)i + " " + (s.length()- s.replaceAll((char)i+"", "").length()) + "\r\n");
            for (int i='A'; i<='Z'; i++) {
                o.writeBytes((char)i + " " + (s.length()-s.replaceAll((char)i+"", "").length()) + "\r\n");
                o.writeBytes((char)(i+32) + " " + (s.length()-s.replaceAll((char)(i+32)+"", "").length()) + "\r\n");
            }
            o.close();
        } catch (Exception e) {return false;}
        return true;
    }
}