你是暖光-x

摘要： public static void kuaipai(int[] arr, int lift, int right) {//快速排序 int l = lift; int r = right; int p = arr[(lift + right) / 2]; int temp = 0; while ( 阅读全文

摘要： public class Singleton { //单例设计模式，禁止指令重排可以加volatile private static Singleton singleton = null; private void Singleton() { System.out.println(Thread.cu 阅读全文