前言 在 Python 中经常通过内存池化技术来提高其性能,那么问题来了,在什么情况下会池化呢? 让我们通过几个例子进行一下理解一下. 预备知识 在查看例子之前,首先要提 python 中的一个函数 id(),让我们看一下函数说明: id(obj, /) Return the identity of an object. This is guaranteed to be unique among simultaneously existing objects. (CPython uses the
Incomputer science, string interning is a method of storing only onecopy of each distinct string value, which must be immutable. Interning strings makes some stringprocessing tasks more time- or space-efficient at the cost of requiring moretime when
点击查看代码 #include<iostream> #include<algorithm> using namespace std; string a, b; int main() { cin >> a >> b; if (a.size() < b.size()) swap(a, b); for (int i = 0; i < a.size(); i ++) { a = a.substr(1) + a[0]; for (int j = 0; j