Ruby Map Practice

1. Return an array of each Student's full name, upper-cased

students = [
  {
      first_name: 'Renad',
      last_name: 'Alobaid'
  },
  {
      first_name: 'Roba',
      last_name: 'Arishi',
  },
  {
      first_name: 'Lama',
      last_name: 'Alaskar',
  }
]

upper_case_full_names = []

Answer

RENAD ALOBAID
ROBA ARISHI
LAMA ALASKAR

2. Find the first order for each user

users = [
  {
      name: 'Faisal',
      orders: [
          {
              description: 'a bike'
          }
      ]
  },
  {
      name: 'Huda',
      orders: [
          {
              description: 'bees'
          },
          {
              description: 'fishing rod'
          }
      ]
  },
  {
      name: 'Omar',
      orders: [
          {
              description: 'a MacBook'
          },
          {
              description: 'The West Wing DVDs'
          },
          {
              description: 'headphones'
          },
          {
              description: 'a kitten'
          }
      ]
  }
]

first_order_for_each_user = []

Answer

{:description=>"a bike"}
{:description=>"bees"}
{:description=>"a MacBook"}

3. Find the average amount spent on coffee, per transaction, for each person

people = [
  {
      name: 'Mohammed',
      transactions: [
          {
              type: 'COFFEE',
              amount: 7.43
          },
          {
              type: 'TACOS',
              amount: 14.65
          },
          {
              type: 'COFFEE',
              amount: 4.43
          }
      ]
  },
  {
      name: 'Maimona',
      transactions: [
          {
              type: 'BIKES',
              amount: 800.00
          },
          {
              type: 'TACOS',
              amount: 14.65
          },
          {
              type: 'COFFEE',
              amount: 4.43
          }
      ]
  },
  {
      name: 'Bedour',
      transactions: [
          {
              type: 'COFFEE',
              amount: 7.43
          },
          {
              type: 'COFFEE',
              amount: 100.00
          },
          {
              type: 'COFFEE',
              amount: 4.43
          }
      ]
  }
]


coffee_average_per_person = []

Answer

{:name=>"Faisal", :coffee_average=>5.93}
{:name=>"Maimona", :coffee_average=>4.43}
{:name=>"Bedour", :coffee_average=>37.28666666666667}

4. Find the most expensive product for each store, with the store name:

stores = [
  {
      store_name: 'Jarir',
      products: [
          {
              description: 'Titanium',
              price: 9384.33
          },
          {
              description: 'Gold',
              price: 345.54
          }
      ]
  },
  {
      store_name: 'Tamimi',
      products: [
          {
              description: 'Silver',
              price: 654.44
          },
          {
              description: 'Ruby',
              price: 323.43
          }
      ]
  },
  {
      store_name: 'Souq',
      products: [
          {
              description: 'Opal',
              price: 345.43
          },
          {
              description: 'Sapphire',
              price: 899.33
          }
      ]
  }
]

most_expensive_products_by_store = []

Answer

{:store_name=>"Jarir", :most_expensive_product=>{:description=>"Titanium", :price=>9384.33}}
{:store_name=>"Tamimi", :most_expensive_product=>{:description=>"Silver", :price=>654.44}}
{:store_name=>"Souq", :most_expensive_product=>{:description=>"Sapphire", :price=>899.33}}

Bonus

Write an infinite loop that will make you add all the your friends in the students list and after each add will ask if you want to quit the loop (yes/no) if the user choose no print all the students array

Answer

add a student
Mashael Alsaadan
Do you want to continue ? (y/n)
y
add a student
Afnan Basudan
Do you want to continue ? (y/n)
y
add a student