5.4

文档摘要

5.4 LeetCode——“1+1=2”“”Offer LeetCode 5.4 “” “”“”“”“” LeetCode 5.4.1 1. “” (Singleton Pattern) LeetCode LeetCode (Factory Pattern) LeetCode (Builder Pattern) LeetCode 2. “” (Adapter Pattern) “” LeetCodeAPI (Decorator Pattern) LeetCode (Composite Pattern)“-” XML/HTML DOM LeetCodeN 3.