why
package zh.codegym.task.task19.task1907;
import java.io.*;
/*
字词计数
*/
public class Solution {
public static void main(String[] args) {
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String fn1=reader.readLine();
FileReader fr = new FileReader(fn1);
int count=0;
int mach=0;
char[] world={'w','o','r','l','d'};
while(fr.ready()){
int data = fr.read();
if(data == world[mach]){
mach++;
}else{
mach=0;
}
if(mach == 5){
count++;
mach=0;
}
}
reader.close();
fr.close();
System.out.println(count);
}catch(IOException e){
}
}
}