usmanzaheer1995

class Snake {
  constructor(board) {
    this.board = board
  }

  isValid(row, col) {
    const numRows = this.board.length
    const numCols = this.board[0].length
    return (
      row >= 0 &&

usmanzaheer1995

class Node {
  constructor(value) {
    this.left = null
    this.right = null
    this.value = value
  }
}

class BinarySearchTree {
  constructor() {

usmanzaheer1995

I have used Golang, but any other programming language would also work (only their specific installations and build commands will change)

1. Create a server instance (preferably Ubuntu)
2. SSH into the server as root
3. Run the commands:
   1. apt update
   2. apt upgrade
   3. apt install postgres-12
   4. service postgres status (to check if it is running)
4. Install Caddy server

usmanzaheer1995

This gist describes how to add Anaconda Prompt to the Windows right click context menu. This is because at some point, Anaconda no longer adds itself to the PATH after installation.

1. Run regedit.exe
2. Navigate to HKEY_CLASSES_ROOT > Directory > Background > shell
3. Add a key named AnacondaPrompt and set its value to "Anaconda Prompt Here" (or anything you'd like it to appear as in the right click context menu)
4. Add a key under this key, called command, and set its value to cmd.exe /K C:\Anaconda3\Scripts\activate.bat (may have to change the activate.bat file to whereever Anaconda is installed)

usmanzaheer1995

// Find the max element in array in O(n)
// using only primitive data types

function findCandidate(a, size) 
{ 
    let maj_index = 0, count = 1; 
    for (let i = 1; i < size; i++) 
    { 
        if (a[maj_index] == a[i]) 
            count++; 

usmanzaheer1995

#!/bin/bash

# arg can be
# 1. start
# 2. stop
# 3. check
arg=$1

start_postgres () {
    sudo docker container run -d --name dev-postgres -e POSTGRES_PASSWORD=usman123 -v ${HOME}/postgres-data/:/var/lib/postgresql/data -p 5432:5432 postgres

usmanzaheer1995

// inspired by: https://derikwhittaker.blog/2018/02/20/using-manual-mocks-to-test-the-aws-sdk-with-jest/

let AWS = {
    // This here is to allow/prevent runtime errors if you are using
    //   AWS.config to do some runtime configuration of the library.
    // If you do not need any runtime configuration you can omit this.
    config: {
        setPromisesDependency: (arg) => {},
        update: (arg) => {},
    },

usmanzaheer1995

// https://medium.com/javascript-in-plain-english/write-a-better-deep-clone-function-in-javascript-d0e798e5f550

function clone2(target, map = new WeakMap()) {
    if (typeof target === 'object') {
        const isArray = Array.isArray(target);
        let cloneTarget = isArray ? [] : {};

        if (map.get(target)) {
            return map.get(target);
        }