manivelarjunan

// Input  [10, 15, 3, 7], Target : 17
// if yes then return true else false.

// Brute force way.
//Solution 1:

function sumOfTwoNum(arr,target){

for(let i = 0 ; i < arr.length; i ++){
  for(let j = 0; j < arr.length; j++){

manivelarjunan

function sumOfTwoNum(array,target){
  let storeMap = {};

  for(let arr of array){
    
    if(storeMap[arr]){
      return true;
    }
    storeMap[target - arr] = arr;
  }

manivelarjunan

import { TestBed, async } from '@angular/core/testing';
import { AppComponent } from './app.component';

describe('App component', () => {
  beforeEach(async(() => {
    // The TestBed is the most important of the Angular testing utilities.
    // The TestBed creates a dynamically-constructed Angular test module that emulates an Angular @NgModule.
    // The TestBed.configureTestingModule() method takes a metadata object that can have most of the properties of an @NgModule.
    TestBed.configureTestingModule({
      declarations: [AppComponent]

manivelarjunan

import { TestBed, async } from '@angular/core/testing';
import { AppComponent } from './app.component';
import { UserComponent } from './user/user.component';
import { UserAsyncComponent } from './user-async/user-async.component';


describe('App component', () => {
  beforeEach(async(() => {
    // The TestBed is the most important of the Angular testing utilities.
    // The TestBed creates a dynamically-constructed Angular test module that emulates an Angular @NgModule.

manivelarjunan

<!--The content below is only a placeholder and can be replaced.-->
<div style="text-align:center">
  <h1>
    Welcome to {{ title }}!
  </h1>
<app-user></app-user>
<br>
<app-user-async></app-user-async>
</div>

manivelarjunan

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {
  title = 'Angular7-unit-testing!';

manivelarjunan

import { TestBed, async } from '@angular/core/testing';
import { AppComponent } from './app.component';
import { UserComponent } from './user/user.component';
import { UserAsyncComponent } from './user-async/user-async.component';

describe('App component', () => {
  beforeEach(async(() => {
    // The TestBed is the most important of the Angular testing utilities.
    // The TestBed creates a dynamically-constructed Angular test module that emulates an Angular @NgModule.
    // The TestBed.configureTestingModule() method takes a metadata object that can have most of the properties of an @NgModule.

manivelarjunan

<div *ngIf="isUserLoggedIn">
  <p>
    Welcome {{user.name}}
  </p>
</div>
<div *ngIf="!isUserLoggedIn">
  <p>
    user is NOT logged In.
  </p>
</div>

manivelarjunan

import { Component, OnInit } from '@angular/core';
import { UserService } from './user.service';

@Component({
  selector: 'app-user',
  templateUrl: './user.component.html',
  styleUrls: ['./user.component.scss'],
  providers: [UserService]
})
export class UserComponent implements OnInit {

manivelarjunan

import { Injectable } from '@angular/core';

@Injectable()
export class UserService {
  user = {
    name: 'Mannie'
  };

  getUser() {
    return this.user;