Java 牛客刷题快读快写模板

Java 牛客刷题快读快写模板

import java.io.*;
import java.math.BigInteger;
import java.util.StringTokenizer;

//自定义快读 Read
class Read {
    public BufferedReader reader;
    public StringTokenizer tokenizer;
    public Read(InputStream stream) {
        reader = new BufferedReader(new InputStreamReader(stream), 32768);
        tokenizer = null;
    }
    public String next() {
        while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            try {
                tokenizer = new StringTokenizer(reader.readLine());
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return tokenizer.nextToken();
    }

    public String nextLine() {
        String str = null;
        try {
            str = reader.readLine();
        } catch (IOException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        }
        return str;
    }

    public int nextInt() {
        return Integer.parseInt(next());
    }

    public long nextLong() {
        return Long.parseLong(next());
    }

    public Double nextDouble() {
        return Double.parseDouble(next());
    }

    public BigInteger nextBigInteger() {
        return new BigInteger(next());
    }
}

使用方法

public class Main {

    public static void main(String[] args) {
        // 用法等价于 Scanner 
        Read read = new Read(System.in);

    }
}