Mike mikeyang01

Get free coins(eth, polygon..) for testing

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You can get free coins from the following sites. all sites has been tested by me.

You can get free Polygon for mumbai testnet, ETH for Rinkeby, Kovan test net. How to use

	public class ArrayList implements List {
	private Object[] elements; // 数组
	private int length; // 数据的长度
	private int size; // 当前元素的个数

	public ArrayList() {
	elements = new Object[10]; // 创建一个长度为10的数组
	this.length = 10;
	}