NicholusMuwonge

import React from "react";
import { GoogleAPI, GoogleLogin, GoogleLogout } from "react-google-oauth";
import FacebookLogin from 'react-facebook-login';

function App() {

  return (
    <div className="App">
      <div className="App-header">
        

NicholusMuwonge

namespace :api, defaults: { format: :json } do
    namespace :v1 do
      mount_devise_token_auth_for 'User', at: 'auth', skip: [:omniauth_callbacks] # add this and overide the omniauth callbacks
      post 'social_auth/callback', to: 'social_auth_controller#authenticate_social_auth_user' # this is the line where we add our routes
    end
  end

NicholusMuwonge

# Api Controller to handle our call backs
require 'json'
class Api::V1::SocialAuthController < ApplicationController
  def authenticate_social_auth_user
    #  params is the response I receive from the client with the data from the provider about the user
    @user = User.signin_or_create_from_provider(params) # this method add a user who is new or logins an old one
    if @user.persisted?
      # I log the user in at this point
      sign_in(@user)
      # after user is loggedIn, I generate a new_token here

NicholusMuwonge

    config.session_store :cookie_store, key: '_interslice_session'
    config.middleware.use ActionDispatch::Cookies # Required for all session management
    config.middleware.use ActionDispatch::Session::CookieStore, config.session_options
    # I added this for cors to be able to accept request from client. for now it accepts from all origins
    config.middleware.use Rack::Cors do
      allow do
        origins '*'
        resource '*',
                 headers: :any,
                 expose: %w[access-token expired token-type uid client],

NicholusMuwonge

# Please find this find via config/initializers/devise.rb
#  Add these to this file in case you're using these providers

config.omniauth :google_oauth2,
                  Rails.application.credentials[:google_app_id],
                  Rails.application.credentials[:google_app_secret],
                  { scope: 'userinfo.email, userinfo.profile', skip_jwt: true }
config.omniauth :facebook,
                Rails.application.credentials[:facebook_app_id],
                Rails.application.credentials[:facebook_app_secret],

NicholusMuwonge

// add these gems and run bundle i
gem 'omniauth'
gem 'omniauth-facebook'
gem 'omniauth-google-oauth2'

NicholusMuwonge

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
  # for omniauth token if its what you're using for your api, I am assuming its what you're using in this tutorial
  include  DeviseTokenAuth::Concerns::User 
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable,
         :confirmable, :omniauthable,
         omniauth_providers: %i[google_oauth2 facebook] # add omniauthable field and add the providers under omniauth_providers
         

NicholusMuwonge

import React from "react";
import { GoogleAPI, GoogleLogin, GoogleLogout } from "react-google-oauth";
import FacebookLogin from 'react-facebook-login';

function App() {

  return (
    <div className="App">
      <div className="App-header">
        

NicholusMuwonge

An array A consisting of N integers is given. Rotation of the array means that each element is shifted right by one index, and the last element of the array is moved to the first place. For example, the rotation of array A = [3, 8, 9, 7, 6] is [6, 3, 8, 9, 7] (elements are shifted right by one index and 6 is moved to the first place).

The goal is to rotate array A K times; that is, each element of A will be shifted to the right K times.

Write a function:

def solution(A, K)

that, given an array A consisting of N integers and an integer K, returns the array A rotated K times.

NicholusMuwonge

Task description A non-empty array A consisting of N integers is given. 
The array contains an odd number of elements, and each element of the array can be paired with another element that has the same value, except for one element that is left unpaired.  For example, in array A such that:    A[0] = 9  A[1] = 3  A[2] = 9   A[3] = 3  A[4] = 9  A[5] = 7   A[6] = 9 the elements at indexes 0 and 2 have value 9, the elements at indexes 1 and 3 have value 3, the elements at indexes 4 and 6 have value 9, the element at index 5 has value 7 and is unpaired. Write a function:  def solution(A)  that, given an array A consisting of N integers fulfilling the above conditions, returns the value of the unpaired element.  For example, given array A such that:    A[0] = 9  A[1] = 3  A[2] = 9   A[3] = 3  A[4] = 9  A[5] = 7   A[6] = 9 the function should return 7, as explained in the example above.  Write an efficient algorithm for the following assumptions:  N is an odd integer within the range [1..1,000,000]; each element of