Java快速输入输出
需要的头文件有
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StreamTokenizer;
在主函数中使用StreamTokenizer和PrintWriter类
StreamTokenizer in=new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
PrintWriter out=new PrintWriter(new OutputStreamWriter(System.out));
输入结束标志参数为
StreamTokenizer.TT_EOF
注意读入的时候要调用nextToken()函数,输出之后调用flush()函数,以hdu 1029为例
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StreamTokenizer;
public class Main {
public static void main(String[] args) throws IOException {
StreamTokenizer in=new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
PrintWriter out=new PrintWriter(new OutputStreamWriter(System.out));
while(in.nextToken()!=StreamTokenizer.TT_EOF) {
int n=(int)in.nval;//读入一个整数
int []c=new int[100000];
int ans=0;
for(int i=0;i<n;++i) {
in.nextToken();
int x=(int)in.nval;
++c[x];
if(c[x]>=(n+1)/2) ans=x;
}
out.println(ans);
out.flush();//输出一次之后要刷新
}
}
}
二、BufferedReader实现快速输入读一行
需要导入的jar
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
BufferedReader inBuff=new BufferedReader(new InputStreamReader(System.in));
BufferedReader inBuff=new BufferedReader(new InputStreamReader(System.in));
String s=inBuff.readLine();
System.out.println("有问题吗"+s+"没有吧");
Either Excellent or Rusty