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public final class RegExpValidator
{
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public static boolean isEmail(String str)
{
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package com.accp.array;
import java.lang.reflect.Array;
public class GrowArrayTest {
public static void main(String[] args) {
Integer[] array = {1,2,3,4}; //ͨÓÃÀ©Õ¹
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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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