iamonuwa

0x12977be2dce14098329fb1ef5cbe93fa701d055b40fc97d5aae8b329020aecee

iamonuwa

Day 1

• Read How to answer a coding interview.
• Read Using sliding window technique to solve coding interview questions.
• Practice coding Array 1 Two Sum
• Practice coding Array 2 Three Sum
• Practice coding Array 3 Max Consecutive Ones III
• Practice coding Array 4 Maximum Product Subarray

Day 2

• Read Using state machine to solve complex coding interview questions.

iamonuwa

Group Array of JavaScript Objects by Keys or Property Values

This fork of JamieMason's implementation changes the key parameter to be an array of keys instead just a single key. This makes it possible to group by multiple properties instead of just one.

Implementation

const groupBy = keys => array =>
  array.reduce((objectsByKeyValue, obj) => {
    const value = keys.map(key => obj[key]).join('-');

iamonuwa

Group Array of JavaScript Objects by Key or Property Value

Implementation

const groupBy = key => array =>
  array.reduce((objectsByKeyValue, obj) => {
    const value = obj[key];
    objectsByKeyValue[value] = (objectsByKeyValue[value] || []).concat(obj);
    return objectsByKeyValue;

iamonuwa

#! /usr/bin/env node
// I am ./bin/buildSitemap.js

const path = require('path')
const glob = require('glob')
const fs = require('fs')

const SITE_ROOT = process.env.SITE_ROOT || 'https://www.actionherojs.com'
const SOURCE = process.env.SOURCE || path.join(__dirname, '..', 'pages', '/**/*.js')
const DESTINATION = process.env.DESTINATION || path.join(__dirname, '..', 'static', 'sitemap.xml')

iamonuwa

import { AfterViewInit, Directive, ElementRef, EventEmitter, forwardRef, Inject, Injectable, InjectionToken, Injector, Input, NgZone, OnInit, Output } from '@angular/core';
import { AbstractControl, ControlValueAccessor, FormControl, NG_VALUE_ACCESSOR, NgControl, Validators } from '@angular/forms';
import { Http } from '@angular/http';

declare const grecaptcha : any;

declare global {
  interface Window {
    grecaptcha : any;
    reCaptchaLoad : () => void

iamonuwa

function getCardType(cardNum) {

    if(!luhnCheck(cardNum)){
	return "";
    }
    var payCardType = "";
    var regexMap = [
      {regEx: /^4[0-9]{5}/ig,cardType: "VISA"},
      {regEx: /^5[1-5][0-9]{4}/ig,cardType: "MASTERCARD"},
      {regEx: /^3[47][0-9]{3}/ig,cardType: "AMEX"},

iamonuwa

/**
 * Example of using an angular provider to build an api service.
 * @author Jeremy Elbourn (@jelbourn)
 */

/** Namespace for the application. */
var app = {};

/******************************************************************************/

iamonuwa

import { Component, OnInit, OnDestroy } from '@angular/core';
import {Http} from "@angular/http";
import { LocalCacheService } from "./local-cache.service";

@Component({
  selector: 'app-example',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class ExampleComponent implements OnInit, OnDestroy {

iamonuwa

[ 
  {name: 'Afghanistan', code: 'AF'}, 
  {name: 'Åland Islands', code: 'AX'}, 
  {name: 'Albania', code: 'AL'}, 
  {name: 'Algeria', code: 'DZ'}, 
  {name: 'American Samoa', code: 'AS'}, 
  {name: 'AndorrA', code: 'AD'}, 
  {name: 'Angola', code: 'AO'}, 
  {name: 'Anguilla', code: 'AI'}, 
  {name: 'Antarctica', code: 'AQ'},