codingEskimo

[LeetCode] 102. Binary Tree Level Order Traversal

摘要： Given the root of a binary tree, return the level order traversal of its nodes' values. (i.e., from left to right, level by level). Example1: Input: r 阅读全文

posted @ 2022-01-05 07:48 codingEskimo 阅读(22) 评论(0) 推荐(0)

[LeetCode] 104. Construct Binary Tree from Preorder and Inorder Traversal

摘要： Given two integer arrays preorder and inorder where preorder is the preorder traversal of a binary tree and inorder is the inorder traversal of the sa 阅读全文

posted @ 2021-12-29 11:11 codingEskimo 阅读(21) 评论(0) 推荐(0)

[LeetCode] 101. Symmetric Tree

摘要： Given the root of a binary tree, check whether it is a mirror of itself (i.e., symmetric around its center). Example 1: Input: root = [1,2,2,3,4,4,3] 阅读全文

posted @ 2021-12-29 10:08 codingEskimo 阅读(17) 评论(0) 推荐(0)

[LeetCode] 100. Same Tree

摘要： Given the roots of two binary trees p and q, write a function to check if they are the same or not. Two binary trees are considered the same if they a 阅读全文

posted @ 2021-12-29 09:55 codingEskimo 阅读(25) 评论(0) 推荐(0)

[LeetCode] 23. Merge k Sorted Lists

摘要： You are given an array of k linked-lists lists, each linked-list is sorted in ascending order. Merge all the linked-lists into one sorted linked-list 阅读全文

posted @ 2021-12-28 07:09 codingEskimo 阅读(34) 评论(0) 推荐(0)

[DesignPattern] 设计之禅读书笔记(五) 策略模式

摘要：模板模式(Template Method Pattern) Define the skeleton of an algorithm in operations, deferring some steps to subclasses. Template Method lets subclasses r 阅读全文

posted @ 2020-10-20 07:45 codingEskimo 阅读(77) 评论(0) 推荐(0)

[DesignPattern] 设计之禅读书笔记(三) 抽象工厂模式

摘要：抽象工厂模式(Abstract Factory Pattern) Provide an interface for creating families of related or dependent objects without specifying their concerete classes 阅读全文

posted @ 2020-10-15 06:06 codingEskimo 阅读(81) 评论(0) 推荐(0)

[DesignPattern] 设计之禅读书笔记(二) 工厂模式

摘要：工厂模式 Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation 阅读全文

posted @ 2020-10-14 11:53 codingEskimo 阅读(65) 评论(0) 推荐(0)

[DesignPattern] 设计之禅读书笔记(二) 单例模式

摘要：单例模式(Singleton Pattern) Ensure a class has only one instance, and provide a global point of access to it.(确保只有一个实例，而且自行实例化并向整个系统提供这个实例。) 模板通用代码 publ 阅读全文

posted @ 2020-10-12 05:34 codingEskimo 阅读(77) 评论(0) 推荐(0)

[DesignPattern] 设计之禅读书笔记(一)

摘要：六大原则单一职责原则： There should be no more than one reason for a class to change 最佳实践：接口的设计一定要做到单一职责，类的设计尽量做到只有一个原因引起变化。里氏替换原则： Functions that use pointer 阅读全文

posted @ 2020-10-11 07:47 codingEskimo 阅读(95) 评论(0) 推荐(0)

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