Things I've learned writing them down.

Pomodoro toggle

One MX Master 4 mouse button that controls the pomodoro timer of the TaskNotes plugin in Obsidian.

Email client — sending and message design

Companion to the email-provider-auth skill

Node and Bun specifics

Tags as in SKILL.md. Read this only if the client runs on Node or Bun. Each

Email provider authentication

Use when a task touches email account sign-in or a mail provider — IMAP or SMTP connections, OAuth scopes or consent screens, app passwords, refresh tokens o…

iCloud, Fastmail, Yahoo — and the TLS trap they exposed

Tags as in SKILL.md.

Verbatim server strings, and what each one means

Look up the string you actually received. Tags as in SKILL.md. Where a string

Google mail authentication

Gmail and Workspace. Tags as in SKILL.md.

Writing the client

Tags as in SKILL.md.

Microsoft mail authentication

Entra ID (Azure AD) v2.0, Exchange Online, Outlook.com and Microsoft Graph.

Parking system

Intersection of Two Linked Lists

Given the heads of two singly linked-lists headA and headB, return the node at which the two lists intersect. If the two linked lists have no intersection at…

Add Two Numbers

You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order, and each of their nodes contains a s…

Delete Node in a Linked List

There is a singly-linked list head and we want to delete a node node in it.

Creational patterns

initialize once use always.

Middle of the Linked List

Given the head of a singly linked list, return the middle node of the linked list.

Reverse Linked List

Given the head of a singly linked list, reverse the list, and return the reversed list.

Merge Two Sorted Lists

this one is an easy on the leetcode however a hard on the striver and medium accoring to me due to doing it in contant space

Two Sum & Three Sum

Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.

Majority Element I & II

Given an array nums of size n, return the majority element.

Merge Sorted Array

You are given two integer arrays nums1 and nums2, sorted in non-decreasing order, and two integers m and n, representing the number of elements in nums1 and…

Find the Duplicate Number

Given an array of integers nums containing n + 1 integers where each integer is in the range [1, n] inclusive.

Merge Intervals

Given an array of intervals where intervals[i] = [starti, endi], merge all overlapping intervals, and return an array of the non-overlapping intervals that c…

Best Time to Buy and Sell Stock

You are given an array prices where prices[i] is the price of a given stock on the ith day. You want to maximize your profit by choosing a single day to buy…

Rotate Image

You are given an n x n 2D matrix representing an image, rotate the image by 90 degrees (clockwise).

Sort Colors

Given an array nums with n objects colored red, white, or blue, sort them in-place so that objects of the same color are adjacent, with the colors in the ord…

Check if the Array Is Sorted and Rotated

Given an array nums, return true if the array was originally sorted in non-decreasing order, then rotated some number of positions (including zero). Otherwis…

Max Consecutive Ones

Given a binary array nums, return the maximum number of consecutive 1's in the array.

Pascal's Triangle

Given an integer numRows, return the first numRows of Pascal's triangle.

Next Permutation

Find the next lexicographically greater permutation.

Set Matrix Zeroes

Given an m x n integer matrix matrix, if an element is 0, set its entire row and column to 0's.

Prompt

I've added more files in this folder format for readability as a markdown file don't change how i have phrased my sentences they are written for me

Claude instructions

Enter plan mode for ANY non-trivial task (3+ steps or architectural decisions)

Scaling — Flash Reference

Ability of a system to handle increased load by adding resources without a full architectural overhaul.