怡然招牌
1.Two Sum(双指针的使用)
1.题目描述:Given an array of integers, return indices of the two numbers such that they add up to a specific target.You may assume that each input would have exactly one solution.Example:Given nums = [2, 7
Android小Demo——通过MQTT协议连接OneNet平台（新版）
详细的过程可参考：https://blog.csdn.net/weixin_51080921/article/details/124150694?spm=1001.2014.3001.5501这里只是说明和旧版不一样的地方第一个是服务器接入地址（非加密方式）：private static final String SERVER_URL = "tcp://mqtts.heclouds.com:1883";第二个是设备ID（这里的设备ID直接是设备名字）：private stat
