From d454dd14da4d413784b17c02560b80697d89e5f2 Mon Sep 17 00:00:00 2001
From: Suchit <78025461+suchit07-git@users.noreply.github.com>
Date: Sat, 31 Dec 2022 10:07:56 +0000
Subject: [PATCH 1/2] Week 2 assignment

---
 week_2/Gemfile          |   8 +++
 week_2/Gemfile.lock     | 150 ++++++++++++++++++++++++++++++++++++++++
 week_2/pet.rb           |  36 ++++++++--
 week_2/prime_numbers.rb |  36 +++++++++-
 4 files changed, 222 insertions(+), 8 deletions(-)
 create mode 100644 week_2/Gemfile
 create mode 100644 week_2/Gemfile.lock

diff --git a/week_2/Gemfile b/week_2/Gemfile
new file mode 100644
index 00000000..4ba6ffca
--- /dev/null
+++ b/week_2/Gemfile
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
+
+gem "rails"
+gem "minitest"
diff --git a/week_2/Gemfile.lock b/week_2/Gemfile.lock
new file mode 100644
index 00000000..a5ad138b
--- /dev/null
+++ b/week_2/Gemfile.lock
@@ -0,0 +1,150 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    actioncable (7.0.4)
+      actionpack (= 7.0.4)
+      activesupport (= 7.0.4)
+      nio4r (~> 2.0)
+      websocket-driver (>= 0.6.1)
+    actionmailbox (7.0.4)
+      actionpack (= 7.0.4)
+      activejob (= 7.0.4)
+      activerecord (= 7.0.4)
+      activestorage (= 7.0.4)
+      activesupport (= 7.0.4)
+      mail (>= 2.7.1)
+      net-imap
+      net-pop
+      net-smtp
+    actionmailer (7.0.4)
+      actionpack (= 7.0.4)
+      actionview (= 7.0.4)
+      activejob (= 7.0.4)
+      activesupport (= 7.0.4)
+      mail (~> 2.5, >= 2.5.4)
+      net-imap
+      net-pop
+      net-smtp
+      rails-dom-testing (~> 2.0)
+    actionpack (7.0.4)
+      actionview (= 7.0.4)
+      activesupport (= 7.0.4)
+      rack (~> 2.0, >= 2.2.0)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.2.0)
+    actiontext (7.0.4)
+      actionpack (= 7.0.4)
+      activerecord (= 7.0.4)
+      activestorage (= 7.0.4)
+      activesupport (= 7.0.4)
+      globalid (>= 0.6.0)
+      nokogiri (>= 1.8.5)
+    actionview (7.0.4)
+      activesupport (= 7.0.4)
+      builder (~> 3.1)
+      erubi (~> 1.4)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.1, >= 1.2.0)
+    activejob (7.0.4)
+      activesupport (= 7.0.4)
+      globalid (>= 0.3.6)
+    activemodel (7.0.4)
+      activesupport (= 7.0.4)
+    activerecord (7.0.4)
+      activemodel (= 7.0.4)
+      activesupport (= 7.0.4)
+    activestorage (7.0.4)
+      actionpack (= 7.0.4)
+      activejob (= 7.0.4)
+      activerecord (= 7.0.4)
+      activesupport (= 7.0.4)
+      marcel (~> 1.0)
+      mini_mime (>= 1.1.0)
+    activesupport (7.0.4)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+    builder (3.2.4)
+    concurrent-ruby (1.1.10)
+    crass (1.0.6)
+    date (3.3.3)
+    erubi (1.12.0)
+    globalid (1.0.0)
+      activesupport (>= 5.0)
+    i18n (1.12.0)
+      concurrent-ruby (~> 1.0)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.5.9)
+    mail (2.8.0)
+      mini_mime (>= 0.1.1)
+      net-imap
+      net-pop
+      net-smtp
+    marcel (1.0.2)
+    method_source (1.0.0)
+    mini_mime (1.1.2)
+    minitest (5.16.3)
+    net-imap (0.3.4)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.1)
+      timeout
+    net-smtp (0.3.3)
+      net-protocol
+    nio4r (2.5.8)
+    nokogiri (1.13.10-x86_64-linux)
+      racc (~> 1.4)
+    racc (1.6.2)
+    rack (2.2.5)
+    rack-test (2.0.2)
+      rack (>= 1.3)
+    rails (7.0.4)
+      actioncable (= 7.0.4)
+      actionmailbox (= 7.0.4)
+      actionmailer (= 7.0.4)
+      actionpack (= 7.0.4)
+      actiontext (= 7.0.4)
+      actionview (= 7.0.4)
+      activejob (= 7.0.4)
+      activemodel (= 7.0.4)
+      activerecord (= 7.0.4)
+      activestorage (= 7.0.4)
+      activesupport (= 7.0.4)
+      bundler (>= 1.15.0)
+      railties (= 7.0.4)
+    rails-dom-testing (2.0.3)
+      activesupport (>= 4.2.0)
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
+    railties (7.0.4)
+      actionpack (= 7.0.4)
+      activesupport (= 7.0.4)
+      method_source
+      rake (>= 12.2)
+      thor (~> 1.0)
+      zeitwerk (~> 2.5)
+    rake (13.0.6)
+    thor (1.2.1)
+    timeout (0.3.1)
+    tzinfo (2.0.5)
+      concurrent-ruby (~> 1.0)
+    websocket-driver (0.7.5)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.5)
+    zeitwerk (2.6.6)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  minitest
+  rails
+
+BUNDLED WITH
+   2.2.33
diff --git a/week_2/pet.rb b/week_2/pet.rb
index 954a713b..6d2cc985 100644
--- a/week_2/pet.rb
+++ b/week_2/pet.rb
@@ -38,7 +38,7 @@ class Pet
 
   attr_accessor :name, :animal_type_id, :food_consumed_per_day
 
-  def initialize(name: , animal_type_id: , food_consumed_per_day:)
+  def initialize(name: "CAT", animal_type_id: 6, food_consumed_per_day: 0.4)
     @name = name
     @animal_type_id = animal_type_id
     @food_consumed_per_day = food_consumed_per_day
@@ -46,7 +46,16 @@ def initialize(name: , animal_type_id: , food_consumed_per_day:)
 
   # Return the habitat of the pet
   def habitat
-    raise NotImplementedError # TODO
+    isPresent = false
+    HABITATS.each { |h, at|
+      if at.include?animal_type_id
+        isPresent = true
+        return h
+      end
+    }
+    if !isPresent
+      raise ArgumentError("Habitat not found")
+    end
   end
 
   # Returns the cost of food required to feed the animal 
@@ -66,7 +75,10 @@ def food_cost_per_day
   # cat = Pet.new(name: 'cat', animal_type_id: 6, food_consumed_per_day: 0.4)
   # cat.food_required(28) = 11.2 (0.4 * 28)
   def food_required(days)
-    raise NotImplementedError # TODO
+    if days < 0
+      raise ArgumentError.new("Days should be positive")
+    end
+    return food_consumed_per_day * days
   end
 
   # This function takes the number of `days` as the input
@@ -76,7 +88,10 @@ def food_required(days)
   # cat = Pet.new(name: 'cat', animal_type_id: 6, food_consumed_per_day: 0.4)
   # cat.food_cost(28) = 8960
   def food_cost(days)
-    raise NotImplementedError # TODO
+    if days < 0
+      raise ArgumentError.new("Days should be positive")
+    end
+    return food_required(days) * FOOD_COST_PER_KG[animal_type_id]
   end
 
   # This function takes an array of pets and the `days`
@@ -90,7 +105,9 @@ def food_cost(days)
   # snake = Pet.new(name: 'python', animal_type_id: 4, food_consumed_per_day: 0.3)
   # Pet.cost_to_feed([cat, dog, fish, snake], 6) will return 6180.0
   def self.cost_to_feed(pets, days)
-    raise NotImplementedError # TODO
+    return pets.reduce(0) {
+      |sum, pet| sum + pet.food_cost(days)
+    }
   end
 
   # This function takes an array of pets as input
@@ -110,6 +127,13 @@ def self.cost_to_feed(pets, days)
   #
   # Note - Order is not important
   def self.group_by_animal_type(pets)
-    raise NotImplementedError # TODO
+    res = {}
+    pets.each { |pet|
+      res[pet.animal_type_id] = []
+    }
+    pets.group_by { |pet| 
+      res[pet.animal_type_id].push(pet.name)
+    }
+    return res
   end
 end
diff --git a/week_2/prime_numbers.rb b/week_2/prime_numbers.rb
index 777a8cf5..efba51a9 100644
--- a/week_2/prime_numbers.rb
+++ b/week_2/prime_numbers.rb
@@ -13,6 +13,38 @@
 # If the user gives a invalid input like -4
 # We will raise an `ArgumentError` exception to let the caller know that
 # their function arguments were incorrect.
-def prime_numbers(n:)
-  raise NotImplementedError # TODO
+
+def sieve(num)
+  is_prime = Array.new(num + 1, true)
+  is_prime[0] = is_prime[1] = false
+  i = 2
+  while i * i <= num
+    if is_prime[i]
+      j = i * i
+      while j <= num
+        is_prime[j] = false
+        j += i
+      end
+    end
+    i += 1
+  end
+  return is_prime
+end
+
+def prime_numbers(n:200)
+  if n <= 0
+    raise ArgumentError.new("Positive value expected")
+  end
+  res = Array.new()
+  p = sieve(n)
+  i = 2
+  while i <= n
+    if p[i]
+      res.append(i)
+    end
+    i += 1
+  end
+  return res
 end
+
+# puts "#{prime_numbers()}"
\ No newline at end of file

From 66d97fc72f96d91cf59f7b3f9ca9d969f28041bf Mon Sep 17 00:00:00 2001
From: Suchit <78025461+suchit07-git@users.noreply.github.com>
Date: Sat, 31 Dec 2022 10:16:30 +0000
Subject: [PATCH 2/2] Week 2 assignment

---
 week_2/pet.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/week_2/pet.rb b/week_2/pet.rb
index 6d2cc985..dc8378dd 100644
--- a/week_2/pet.rb
+++ b/week_2/pet.rb
@@ -76,7 +76,7 @@ def food_cost_per_day
   # cat.food_required(28) = 11.2 (0.4 * 28)
   def food_required(days)
     if days < 0
-      raise ArgumentError.new("Days should be positive")
+      raise ArgumentError.new("Number of days should be positive")
     end
     return food_consumed_per_day * days
   end
@@ -89,7 +89,7 @@ def food_required(days)
   # cat.food_cost(28) = 8960
   def food_cost(days)
     if days < 0
-      raise ArgumentError.new("Days should be positive")
+      raise ArgumentError.new("Number of days should be positive")
     end
     return food_required(days) * FOOD_COST_PER_KG[animal_type_id]
   end