rajsek

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

rajsek

Swiggy

• SDE 1 (4 rounds): Online Test, Machine Coding, DSA, Hiring Manager
• SDE 1 (4 rounds): Online Test, DSA, DSA, Hiring Manager
• Questions: https://leetcode.com/discuss/interview-question/1857338/

Machine Coding

• Form input validations in vanilla js for a credit card payment page

Grofers

rajsek

var page = require('webpage').create(),
    url = 'http://example.com/';

// Put the event handlers somewhere in the code before the action of 
// interest (opening the page in question or clicking something)

// http://phantomjs.org/api/webpage/handler/on-console-message.html
page.onConsoleMessage = function(msg, lineNum, sourceId) {
  console.log('CONSOLE: ' + msg + ' (from line #' + lineNum + ' in "' + sourceId + '")');
};

rajsek

/*      
 *    Copyright (c) 2014 Rajasekar Durairaj
 *   
 *    This script forked version of tobytailor's get_barcode_from_image.js file and 
 *    this script is freely distributable under the terms of the MIT license.
 */

(function(){
    var UPC_SET = {
        "3211": '0',

rajsek

/*
 *    Copyright (c) 2010 Tobias Schneider
 *    This script is freely distributable under the terms of the MIT license.
 */

(function(){
    var UPC_SET = {
        "3211": '0',
        "2221": '1',
        "2122": '2',