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package com.yz.mystack;
public class Stack {
Object[] datas;
Integer n=0;
Integer N=1;
public Stack(){
datas=new Object[N];
}

public void push(Object data){
if(n>=N){
N+=2;
Object[] temps=datas;
datas=new Object[N];
for(int i=0;i<temps.length;i++){
datas[i]=temps[i];
}
}
datas[n++]=data;
}

public Object peek(){
return datas[n-1];
}
public Object pop(){
if(--n>=0){
return datas[n];
}
return 0;
}


public static void main(String[] args){
Stack stack=new Stack();
stack.push("aa");
stack.push("bb");
stack.push("cc");

System.out.println(stack.pop());
System.out.println(stack.pop());
System.out.println(stack.pop());
System.out.println(stack.pop());
}
}


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java IO

JavaÓïÑÔµÄÊäÈëÊä³ö¹¦ÄÜÊÇÊ®·ÖÇ¿´ó¶øÁé»îµÄ£¬ÃÀÖв»×ãµÄÊÇ¿´ÉÏÈ¥ÊäÈëÊä³öµÄ´úÂë²¢²»ÊǺܼò½à£¬ÒòΪÄãÍùÍùÐèÒª°ü×°Ðí¶à²»Í¬µÄ¶ÔÏó¡£ÔÚJavaÀà¿âÖУ¬IO²¿·ÖµÄÄÚÈÝÊǺÜÅÓ´óµÄ£¬ÒòΪËüÉæ¼°µÄÁìÓòºÜ¹ã·º:±ê×¼ÊäÈëÊä³ö£¬ÎļþµÄ²Ù×÷£¬ÍøÂçÉϵÄÊý¾ÝÁ÷£¬×Ö·û´®Á÷£¬¶ÔÏóÁ÷£¬zipÎļþÁ÷....±¾ÎĵÄÄ¿µÄÊÇΪ´ó¼Ò×öÒ»¸ö¼òÒªµÄ½éÉÜ¡£
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Java Reflect ·´Éä»úÖÆ ѧϰ±Ê¼Ç [ÍòÄÜtoString·½·¨]

ÀûÓÃJava Reflect»úÖÆ±àдÍòÄÜtoString()·½·¨:
 
 
package com.accp.test.filed;

import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;

publ ......

javaÊý¾Ý½á¹¹Ö®¶ÑÕ»

½¨Á¢½ÚµãÀà(Node.java)
package com.yz.mystack;
public class Node {
Object data;
Node next;
public Node(Object data){
this.data=data;
next=null;
}
public Object getData() {
return data;
}
public void setData(Object data) {
this.data = data;
}
public Node getNext() {
......

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<%@ page import="java.lang.*" %>
ÉáµôСÊýÈ¡Õû:Math.floor(2.0)=2
ÉáµôСÊýÈ¡Õû:Math.floor(2.1)=2
ÉáµôСÊýÈ¡Õû:Math.floor(2.5)=2
ÉáµôСÊýÈ¡Õû:Math.floor(2.9)=2
ÉáµôСÊýÈ¡Õû:Math.floor(-2.0)=-2
ÉáµôСÊýÈ¡Õû:Math.floor(-2.1)=-3
ÉáµôСÊýÈ¡Õû:Math.floor(-2.5)=-3
ÉáµôСÊýÈ¡Õû:Math.floor(-2.9)= ......
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