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package game;
public class HanTa {
 public static int i = 0;
 public static void main(String[] args){
  calc('A', 'B', 'C', 2);
  System.out.println("×îÉÙÐèÒª"+i+"²½¡£");
 }
 
 //ººÂÞËþÓÎÏ·¼ÆËã
 public static void calc(char src, char ilde, char dest, int num){
  if(num == 1){
   i++;
   System.out.println(src+"-->"+dest);
   return;
  }
  calc(src, dest, ilde, num - 1);
  i++;
  System.out.println(src+"-->"+dest);
  calc(ilde, src, dest, num - 1);
 }
}


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¡¡¡¡°ÑJava¶ÔÏóת»»Îª×Ö½ÚÐòÁеĹý³Ì³ÆÎª¶ÔÏóµÄÐòÁл¯¡£
¡¡¡¡°Ñ×Ö½ÚÐòÁлָ´ÎªJava¶ÔÏóµÄ¹ ......

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ʵÏÖÉú²úÕßÏû·ÑÕßÎÊÌâÀ´ËµÃ÷Ïß³ÌÎÊÌâ,¾ÙÀýÈçÏÂËùʾ:
/**
* Éú²úÕßÏû·ÑÕßÎÊÌâ
*/
public class ProducerConsumer {

/**
* Ö÷·½·¨
*/
public static void main(String[] args) {
ProductBox pb = new ProductBox ......

java£º´óÊý¾ÝÎļþдÈ룬¶ÁÈ¡£¬·Ö¸î£¬ÅÅÐò£¬ºÏ²¢

package arrays.file;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
i ......

java£ºArrayListÑ­»·±éÀúµÄÁ©ÖÖ·½·¨Ê¹ÓÃ

package collection;
import java.util.*;
public class NewArrayList {
 public static void main(String[] args) {
  List<Student> students = new ArrayList<Student>();
  for (int i = 0; i < 6; i++) {
   students.add(new Student("Happy"+i,"male" ......

java£ºSetÑ­»·±éÀúµÄÁ©ÖÖ·½·¨Ê¹ÓÃ

package collection;
import java.util.*;
public class NewSet {
 public static void main(String[] args) {
  Set<Student> students = new HashSet<Student>();
  for (int i = 0; i < 6; i++) {
   students.add(new Student("Happy"+i,"male"+i,20+i)) ......
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