📚 5月单词、短语、句型积累

Week 1

单词

📚 4月单词、短语、句型积累

Week 1

单词

LeetCode Hot 100

为什么要系统性检查边界条件

边界条件的本质是：输入规模、窗口范围、索引合法性是否被完整覆盖。常见问题来自：

• 空输入 / 空字符串
• 单元素 / 最小窗口
• 窗口刚好满足条件
• 计数回退导致的 off-by-one
• 排序 / 哈希 / 计数数组的索引越界

LeetCode Hot 100

53. 最大子数组和

难度：中等 | LeetCode 链接

给定一个整数数组 nums，找到一个具有最大和的连续子数组，返回其最大和。

Target overall band: 6.5 (L 7 / R 7 / W 6.0 / S 6.0)

Done Today

• Listening: Section 2 intensive practice (20 mins)
• Reading: Passage 1 timed practice (20 mins)
• Writing: Task 1 structure review (15 mins)
• Speaking: Part 1 topic cards (10 mins)

Notes

• Listening: slow response to paraphrases
• Reading: first 5 minutes too slow for locating keywords
• Writing: intro template needs trimming
• Speaking: answers are long enough but lack examples

Goal: follow an actionable plan to pass AWS Certified Developer - Associate (DVA-C02).

Exam Overview

• Duration: 130 minutes
• Question types: multiple choice / multiple response
• Focus areas: development, deployment, monitoring, identity and access, best practices

Domain Map

1. Deployment
   • CodeDeploy / CodePipeline / CodeBuild
   • Blue/Green and rolling deployments
2. Security
   • IAM policy boundaries, STS, role assumption
   • KMS, Secrets Manager, Parameter Store
3. Development with AWS Services
   • Lambda / API Gateway / DynamoDB / SQS / SNS
   • SDK retries, signing, pagination
4. Troubleshooting and Optimization
   • CloudWatch / X-Ray
   • Latency and error investigation patterns

A minimal template to reduce decision fatigue and keep rhythm.

This Week’s Goals

1. Complete 3 notes
2. Solve 10 problems
3. Do 1 weekly review

Daily Schedule

A compact reference for high-frequency Git commands.

Common Commands

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git status
git add .
git commit -m "feat: add post"
git pull --rebase
git push

Branch Operations

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git checkout -b feature/post
git switch main
git merge feature/post

3月单词、短语、句型积累

Week 1 | 教育 Education

核心词汇

A minimal Hexo checklist to get started fast.

Install

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npm install -g hexo-cli

Init

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hexo init my-blog
cd my-blog
npm install