mikeyang01

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

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Free fauet

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

https://faucets.chain.link

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

mikeyang01

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;
    }

mikeyang01

abstract class Animal {
    protected boolean isMammal;
    protected boolean isCarnivorous;

    public Animal(boolean isMammal, boolean isCarnivorous) {
        this.isMammal = isMammal;
        this.isCarnivorous = isCarnivorous;
    }

    public boolean getIsMammal() {

mikeyang01

//链接：https://www.zhihu.com/question/47045239/answer/105086885

public abstract class BaseActivity extends FragmentActivity implements
		OnClickListener {
	/** 是否沉浸状态栏 **/
	private boolean isSetStatusBar = true;
	/** 是否允许全屏 **/
	private boolean mAllowFullScreen = true;
	/** 是否禁止旋转屏幕 **/
	private boolean isAllowScreenRoate = false;

mikeyang01

//链接：https://www.zhihu.com/question/47045239/answer/105086885

public abstract class BaseActivity extends FragmentActivity implements
		OnClickListener {
	/** 是否沉浸状态栏 **/
	private boolean isSetStatusBar = true;
	/** 是否允许全屏 **/
	private boolean mAllowFullScreen = true;
	/** 是否禁止旋转屏幕 **/
	private boolean isAllowScreenRoate = false;

mikeyang01

//链接：https://www.zhihu.com/question/47045239/answer/105086885
public abstract class BaseFragment extends Fragment implements OnClickListener {
	private boolean isDebug;
	private String APP_NAME;
	protected final String TAG = this.getClass().getSimpleName();
	private View mContextView = null;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

mikeyang01

//输入一个整数数组，实现一个函数来调整该数组中数字的顺序，使得所有的奇数位于数组的前半部分，
//所有的偶数位于数组的后半部分，并保证奇数和奇数，偶数和偶数之间的相对位置不变。

import java.util.ArrayList;

public class Even_Odd_Array {
    static int[] array = {5, 6, 7, 8};

    public static class Solution {
        public static void reOrderArray(int[] array) {

mikeyang01

package Callback;

public interface Callback {

    void event(String result);

}


public class Callback_Test {

mikeyang01

public class LinkedList_reverse {

    public static void main(String[] args) {
        Node head = new Node(0);
        Node node1 = new Node(1);
        Node node2 = new Node(2);
        Node node3 = new Node(3);
        head.setNext(node1);
        node1.setNext(node2);
        node2.setNext(node3);

mikeyang01

import java.util.Stack;
import java.util.Queue;
import java.util.LinkedList;

public class TreeMap {
    class BST<E extends Comparable<E>> {
        private class Node {
            public E e;
            public Node left, right;