用动态数组实现的堆栈以及测试程序。实现功能包括入栈、出栈、栈的拷贝、2个堆栈等值判定、栈元素搜索。测试包括以上功能的测试和线程安全测试。-Using dynamic arrays, as well as realize the stack test procedure. Realize features include入栈, a stack, the stack of copies of two to determine the equivalent stack, stack elements