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Îâ 玥ò« (wuyuehao@cn.ibm.com), Èí¼þ¹¤³Ìʦ, IBM
2006 Äê 10 ÔÂ 30 ÈÕ
ÔÚ¼´½«·¢²¼µÄ Java SE6£¨Mustang£©ÖУ¬Ôö¼ÓÁ˶Խű¾ÓïÑÔµÄÖ§³Ö¡£Í¨¹ý¶Ô½Å±¾ÓïÑԵĵ÷Óã¬Ê¹µÃһЩͨ³£Óà Java ±È½ÏÄÑÓÚʵÏֵŦÄܱäµÃ¼òµ¥ºÍÇá±ã¡£½Å±¾ÓïÑÔÓë Java Ö®¼äµÄ»¥²Ù×÷½«±äµÃÓÅÑŶøÖ±½Ó¡£
½Å±¾ÓïÑÔÓë Java
¼ÙÉèÎÒÃÇÓÐÒ»¸ö¼òµ¥µÄÐèÇ󣬲쿴һ·ÝÎĵµÖÐ 5 ¸ö×Öĸ×é³ÉµÄµ¥´ÊµÄ¸öÊý¡£Óà Java Ò»°ãʵÏÖÈçÏ£º
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class Find5Words {
public static void main(String[] args) throws IOException {
String result = "";
String line = null;
int num = 0;
FileReader fr = new FileReader("filename");
BufferedReader br = new BufferedReader(fr);
while ((line = br.readLine()) != null) {
result += line;
}
br.close();
fr.close();
String[] s = result.split(" ");
for (int i = 0; i < s.length; i++) {
if (s[i].matches("^\\w{5}$")) {
num++;
}
}
System.out.println(num);
}
}

ÔÙ¿´¿´ Perl ÓïÑÔʵÏÖͬÑù¹¦ÄܵĴúÂ룺
open FILE, "<filename ";
while (<FILE>) {
for (split) {
$num++ if /^\w{5}$/
}
}
print $num;

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