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@PrinceSinghhub
PrinceSinghhub / 22 Key DSA Patterns with Must-Solve Problems! 💡.md
Last active November 2, 2025 17:28
After solving and observing many interview problems, I’ve identified key patterns that will help you solve them.

Problem-Solving Techniques and Patterns

1. Fast and Slow Pointer

Description: This technique uses two pointers moving at different speeds to solve problems involving cycles, such as finding the middle of a list, detecting loops, or checking for palindromes.

  • Linked List Cycle II
  • Remove nth Node from the End of List
  • Find the Duplicate Number
  • Palindrome Linked List
@OrionReed
OrionReed / dom3d.js
Last active November 16, 2025 19:47
3D DOM viewer, copy-paste this into your console to visualise the DOM topographically.
// 3D Dom viewer, copy-paste this into your console to visualise the DOM as a stack of solid blocks.
// You can also minify and save it as a bookmarklet (https://www.freecodecamp.org/news/what-are-bookmarklets/)
(() => {
const SHOW_SIDES = false; // color sides of DOM nodes?
const COLOR_SURFACE = true; // color tops of DOM nodes?
const COLOR_RANDOM = false; // randomise color?
const COLOR_HUE = 190; // hue in HSL (https://hslpicker.com)
const MAX_ROTATION = 180; // set to 360 to rotate all the way round
const THICKNESS = 20; // thickness of layers
const DISTANCE = 10000; // ¯\\_(ツ)_/¯

I've recently joined Amazon Dublin from India and got opportunities to interview with Meta London, Zalando Berlin & some other companies. I extensively researched about companies hiring internationally which support visa & relocation for Tech roles. So sharing list of companies:

Do consider to STAR, if it helped you.

London

@fnky
fnky / ANSI.md
Last active November 20, 2025 15:58
ANSI Escape Codes

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

  • Ctrl-Key: ^[
  • Octal: \033
  • Unicode: \u001b
  • Hexadecimal: \x1B
  • Decimal: 27
@vasanthk
vasanthk / System Design.md
Last active November 21, 2025 06:49
System Design Cheatsheet

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?
@DavidAnson
DavidAnson / common-markdown-mistakes.md
Last active November 12, 2025 19:56
A few common Markdown mistakes

The following snippets show some common Markdown mistakes.

Click the Raw button to see the source text and understand the author's intent.

GitHub's parser handles some of these cases; other parsers do not.

To catch these problems automatically: