login

//09. Login
function login(arr) {

  let user = arr[0]
  let password = reverse(user)
  for (let i = 1; i <= arr.length; i++) {
    if (arr[i] === password) {
      console.log(`User ${user} logged in.`)
      return
    } else
      console.log(`Incorrect password. Try again.`)

    if (i === 3) {
      console.log(`User ${user} blocked!`)
      return
    }
  }

  function reverse(string) {
    let reverseString = ''
    for (let i = string.length - 1; i >= 0; i--)
      reverseString += string[i]
    return reverseString
  }
}
login0(['Acer', 'login', 'go', 'let me in', 'recA'])

function login0(arr) {
  'use strict'

  const reverse = str => str.split('').reverse().join('')

  let user = arr[0]
  let password = reverse(user)

  for (let i = 1; i <= arr.length; i++) {
    if (arr[i] === password) {
      console.log(`User ${user} logged in.`)
      return
    } else
      console.log(`Incorrect password. Try again.`)

    if (i === 3) {
      console.log(`User ${user} blocked!`)
      return
    }
  }
}