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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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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;
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java -verbose:gc TestStaticGc
// TestStaticGc.java
public class TestStaticGc {
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