Kevin Nguyen

day_1/README.md

@@ -48,21 +48,21 @@ This will open the day_1 directory in Atom. You should be able to see the direct
 
 1. Check off the items below as you complete the steps you just read for each lesson. ***Remember to create a file containing your work for each lesson!***
 
-    - [ ] [A Good First Program](https://learnrubythehardway.org/book/ex1.html)
+    - [X] [A Good First Program](https://learnrubythehardway.org/book/ex1.html)
 
-    - [ ] [Comments in Code](https://learnrubythehardway.org/book/ex2.html)
+    - [X] [Comments in Code](https://learnrubythehardway.org/book/ex2.html)
 
-    - [ ] [Numbers and Math](https://learnrubythehardway.org/book/ex3.html)
+    - [X] [Numbers and Math](https://learnrubythehardway.org/book/ex3.html)
 
-    - [ ] [Variables and Names](https://learnrubythehardway.org/book/ex4.html)
+    - [X] [Variables and Names](https://learnrubythehardway.org/book/ex4.html)
 
-    - [ ] [Strings](https://learnrubythehardway.org/book/ex5.html)
+    - [X] [Strings](https://learnrubythehardway.org/book/ex5.html)
 
-    - [ ] [More Strings](https://learnrubythehardway.org/book/ex6.html)
+    - [X] [More Strings](https://learnrubythehardway.org/book/ex6.html)
 
-    - [ ] [Asking for Input](https://learnrubythehardway.org/book/ex11.html)
+    - [X] [Asking for Input](https://learnrubythehardway.org/book/ex11.html)
 
-    - [ ] Have you created 7 `ex.rb` files with your code in them?
+    - [X] Have you created 7 `ex.rb` files with your code in them?
 
 1. Work through the [Strings](http://tutorials.jumpstartlab.com/projects/ruby_in_100_minutes.html#3.-strings) and [Numbers](http://tutorials.jumpstartlab.com/projects/ruby_in_100_minutes.html#5.-numbers) sections from Ruby in 100 Minutes. For each of these sections, open an `irb` session by typing `irb` into your terminal and type in the code snippets provided.
 

day_1/ex1.rb

@@ -0,0 +1,8 @@
+puts "Hello World!"
+puts "Hello Again"
+puts "I like typing this."
+puts "This is fun."
+puts "Yay! Printing."
+puts "I'd much rather you 'not'."
+puts 'I "said" do not touch this.'
+#mod for new commit

day_1/ex2.rb

@@ -0,0 +1,9 @@
+# A comment, this is so you can read your program later.
+# Anything after the # is ignored by ruby.
+
+puts "I could have code like this."
+
+# You can also use a comment to "disable" or comment out a piece of code:
+#puts "This won't run."
+
+puts "This will run."

day_1/ex3.rb

@@ -0,0 +1,22 @@
+puts "I will now count my chickens:"
+
+puts "Hens #{25.0 + 30 /6}"
+puts "Rooster #{100.0 - 25 * 3 % 4}"
+
+puts "Now I will count the eggs:"
+
+puts 3.0 + 2 + 1 - 5 + 4 % 2 - 1 /4 + 6
+puts "Is it true that 3 + 2 < 5 - 7?"
+
+puts 3 + 2 < 5 - 7
+
+puts "What is 3 + 2? #{3.0 + 2}"
+puts "What is 5 - 7? #{5.0 - 7}"
+
+puts "Oh, that's why it's false."
+
+puts "How about some more."
+
+puts "Is it greater? #{5 > -2}"
+puts "Is it greater or equal? #{5 >= -2}"
+puts "Is it less or equal? #{5 <= -2}"

day_1/ex4.rb

@@ -0,0 +1,21 @@
+cars = 100
+space_in_a_car = 4.0
+drivers = 30
+passengers = 90
+cars_not_driven = cars - drivers
+cars_driven = drivers
+carpool_capacity = cars_driven * space_in_a_car
+average_passengers_per_car = passengers / cars_driven
+
+
+puts "There are #{cars} cars available."
+puts "There are only #{drivers} drivers available."
+puts "There will be #{cars_not_driven} empty cars today."
+puts "We can transport #{carpool_capacity} people today."
+puts "We have #{passengers} to carpool today."
+puts "We need to put about #{average_passengers_per_car} in each car."
+
+#Study Drills ?:  The error says that on line 14 in the code, the variables
+#'carpool_capacity' was not defined before its use.
+#1.  '.0' making the 4 a float is not necessary bc there will not be a decimal
+#    or tenth of a person.

day_1/ex5.rb

@@ -0,0 +1,19 @@
+name = 'Zed A. Shaw'
+age = 35 #not a lie in 2009
+height = 74 # inches
+ht_cm = height * 2.54 # centimeters
+weight = 180 # lbs
+wt_kg = weight * 0.45 # kilograms
+eyes = 'Blue'
+teeth = 'White'
+hair = 'Brown'
+
+puts "Let's talk about #{name}."
+puts "He's #{height} inches tall, or #{ht_cm} centimeters."
+puts "He's #{weight} pounds or #{wt_kg} kg heavy."
+puts "Actually that's not too heavy."
+puts "He's got #{eyes} eyes and #{hair} hair."
+puts "His teeth are usually #{teeth} depending on the coffee."
+
+# this line is tricky, try to get it exactly right
+puts "If I add #{age}, #{height}, and #{weight} I get #{age + height + weight}."

day_1/ex6.rb

@@ -0,0 +1,37 @@
+# Define first variable
+types_of_people = 10
+# Defines string wtih first variable inserted
+x = "There are #{types_of_people} types of people."
+
+# Defines a third variable
+binary = "binary"
+# Defines a fourth variable
+do_not = "don't"
+# Defines string wtih two variables inserted
+y = "Those who know #{binary} and those who #{do_not}."
+
+# Prints first string
+puts x
+# Prints second string
+puts y
+
+# Prints first string insterted into a string
+puts "I said: #{x}."
+# Prints second string insterted into a string
+puts "I also said: #{y}."
+
+# Define a boolean variable 'hilarious'
+hilarious = false
+# Defines another string, that has the boolean variable insterted
+joke_evaluation = "Isn't that joke so funny?! #{hilarious}"
+
+# Prints the previous string
+puts joke_evaluation
+
+# Defines w string
+w = "This is the left side of..."
+# Defines e string
+e = 'a string with a right side.'
+
+# Prints w and e string in sequence
+puts w + e

day_1/ex7.rb

@@ -0,0 +1,10 @@
+print "How old are you? "
+age = gets.to_i
+print "How tall are you? "
+height = gets.chomp
+print "How much do you weigh? "
+weight = gets.chomp
+
+puts "So, you're #{age} old, #{height} tall and #{weight} heavy."
+ten_years = age + 10
+p "You'll be #{ten_years} in a decade, wow."

day_1/exercise7.rb

@@ -0,0 +1,38 @@
+# Outputs a string
+puts "Mary had a little lamb"
+# Outputs a string with substring insterted
+puts "Its fleece was white as #{'snow'}."
+# Outputs 10 consecutive '.'
+puts "." * 10 # what'd that do?
+
+# Defines a variable
+end1 = "C"
+# Defines a variable
+end2 = "h"
+# Defines a variable
+end3 = "e"
+# Defines a variable
+end4 = "e"
+# Defines a variable
+end5 = "s"
+# Defines a variable
+end6 = "e"
+# Defines a variable
+end7 = "B"
+# Defines a variable
+end8 = "u"
+# Defines a variable
+end9 = "r"
+# Defines a variable
+end10 = "g"
+# Defines a variable
+end11 = "e"
+# Defines a variable
+end12 = "r"
+
+# watch that pring vs. puts on this line what's it do?
+# Outputs first 6 strings of letters consecutively, w/o a line break
+print end1 + end2 + end3 + end4 + end5 + end6
+# Outputs the next 6 string of letters after the previous
+puts end7 + end8 + end9 + end10 + end11 + end12
+#mod for 2nd commit

day_1/exercises/interpolation.rb

@@ -15,11 +15,11 @@
 speedy = "quick red fox"
 slow_poke = "lazy brown dog"
 
-p # YOUR CODE HERE
+p "The #{speedy} jumped over the #{slow_poke}" # YOUR CODE HERE
 
 # Write code that uses the variables below to form a string that reads
 # "In a predictable result, the tortoise beat the hare!":
 slow_poke = "tortoise"
 speedy = "hare"
 
-# YOUR CODE HERE
+p "In a predictable result, the #{slow_poke} beat the #{speedy}!" # YOUR CODE HERE

day_1/exercises/loops.rb

@@ -5,14 +5,16 @@
 
 # Example: Write code that prints your name five times:
 5.times do
-  p "Hermione Granger"
+  p "Kevin Nguyen rules!"
 end
 
 # Write code that prints the sum of 2 plus 2 seven times:
 7.times do
-  # YOUR CODE HERE
+  p 2 + 2 # YOUR CODE HERE
 end
 
 # Write code that prints the phrase 'She sells seashells down by the seashore'
 # ten times:
-# YOUR CODE HERE
+10.times do
+  p "She sells seashells down by the seashore"
+end # YOUR CODE HERE

day_1/exercises/numbers.rb

@@ -7,10 +7,10 @@
 p 2 + 2
 
 # Write code that prints the result of 7 subtracted from 83:
-p #YOUR CODE HERE
+p 83 - 7 #YOUR CODE HERE
 
 # Write code that prints the result of 6 multiplied by 53:
-# YOUR CODE HERE
+p 6 * 53 #YOUR CODE HERE
 
 # Write code that prints the result of the modulo of 10 into 54:
-# YOUR CODE HERE
+p 10.modulo(54)  # YOUR CODE HERE

day_1/exercises/strings.rb

@@ -4,10 +4,10 @@
 # `ruby day_1/exercises/strings.rb`
 
 # Example: Write code that prints your name to the terminal:
-p "Alan Turing"
+p "Kevin Nguyen" #"Alan Turing"
 
 # Write code that prints `Welcome to Turing!` to the terminal:
-p #YOUR CODE HERE
+p "Welcome to Turing!" #YOUR CODE HERE
 
 # Write code that prints `99 bottles of pop on the wall...` to the terminal:
-# YOUR CODE HERE
+p "99 bottles of pop on the wall..." # YOUR CODE HERE

day_1/exercises/variables.rb

@@ -1,6 +1,6 @@
 # In the below exercises, write code that achieves
 # the desired result. To check your work, run this
-# file by entering the following command in your terminal: 
+# file by entering the following command in your terminal:
 # `ruby day_1/exercises/variables.rb`
 
 # Example: Write code that saves your name to a variable and
@@ -11,19 +11,20 @@
 # Write code that saves the string 'Dobby' to a variable and
 # prints what that variable holds to the terminal:
 house_elf = "Dobby"
-# YOUR CODE HERE
+p house_elf # YOUR CODE HERE
 
 # Write code that saves the string 'Harry Potter must not return to Hogwarts!'
 # and prints what that variable holds to the terminal:
-# YOUR CODE HERE
+what = "Harry Potter must not return to Hogwarts!"
+p what # YOUR CODE HERE
 
 # Write code that adds 2 to the `students` variable and
 # prints the result:
 students = 22
-# YOUR CODE HERE
+students = students + 2 # YOUR CODE HERE
 p students
 
 # Write code that subracts 2 from the `students` variable and
 # prints the result:
-# YOUR CODE HERE
+students = students - 2 # YOUR CODE HERE
 p students

day_1/questions.md

@@ -1,17 +1,25 @@
 ## Day 1 Questions
 
-1. How would you print the string `"Hello World!"` to the terminal?
+`1.1 How would you print the string `"Hello World!"` to the terminal?`
+puts "Hello World!"
 
-1. What character is used to indicate comments in a ruby file?
+`1.2 What character is used to indicate comments in a ruby file?`
+#
 
-1. Explain the difference between an integer and a float?
+`1.3 Explain the difference between an integer and a float?`
+Decimal point and decimal value
 
-1. In the space below, create a variable `animal` that holds the string `"zebra"`
+`1.4 In the space below, create a variable `animal` that holds the string `"zebra"`
+animal = 'zebra'
 
-1. How would you print the string `"zebra"` using the variable that you created above?
+`1.5 How would you print the string `"zebra"` using the variable that you created above?`
+puts animal
 
-1. What is interpolation? Use interpolation to print a sentence using the variable `animal`.
+`1.6 What is interpolation? Use interpolation to print a sentence using the variable `animal`.`
+puts "The best creature is the #{animal}."
 
-1. What method is used to get input from a user?
+`1.7 What method is used to get input from a user?`
+answer = get.chomp
 
-1. Name and describe two common string methods:
+`1.8 Name and describe two common string methods:'
+.length and .split

day_2/array_methods.md

@@ -0,0 +1,17 @@
+'.sort': sorts arrays of strings alphabetically and numbers in ascending order.  
+
+'.each': .each {|a| print a -= 10, " "}  array iterator that specifies and action to be done for each array element.
+
+'.join': or .join("-")  returns all the element joined into one string with no space or a specified separator in between
+
+'.index':  .index("a")  returns the position (ie 0,1,2) for the first element that matches, or "nil" if it is not present.
+
+'.include?': .include?("a") searches if an element is present and returns "true" or "false"
+
+'.collect':  .collect {|a| a + "!"}  returns new values of each element after a specified action.
+
+'.first':  or .first(2)  returns the first or first number of elements in an array.
+
+'.last':  or .last(2)  returns the last or last number of elements in an array.
+
+'.shuffle':  or .shuffle!  randomizes order of elements temporarily or permanently with "!"

day_2/exercises/arrays.rb

@@ -9,32 +9,39 @@
 p animals
 
 # Write code that stores an array of states in a variable,
-# then prints that array:
-states = #YOUR CODE HERE
+# then prints that array:   #YOUR CODE HERE-
+states = [ "Florida", "Texas", "Idaho", "Utah"]
 p states
 
 # Write code that stores an array of foods in a variable,
-# then prints that array:
-# YOUR CODE HERE
+# then prints that array:   # YOUR CODE HERE-
+foods = [ "Burgers", "Fries", "Shakes"]
+p foods
 
 # Example: Write code that prints the number of elements
 # in your above array of animals:
 p animals.count
 
 # Write code that prints the number of elements
-# in your above array of foods:
-# YOUR CODE HERE
+# in your above array of foods:  # YOUR CODE HERE-
+p foods.count
 
 # Write code that prints "Zebra" from your animals array:
-# YOUR CODE HERE
+# YOUR CODE HERE-
+p animals[0]
 
 # Write code that prints the last item of your foods array:
-# YOUR CODE HERE
+# YOUR CODE HERE-
+p foods.last
 
 # Write code that adds "lion" to your animals array
 # and prints the result (Hint- use a method):
-# YOUR CODE HERE
+# YOUR CODE HERE-
+animals << "lion"
+p animals
 
 # Write code that removes the last element from your foods array
 # and prints the result (Hint- use a method):
-# YOUR CODE HERE
+# YOUR CODE HERE- or foods.pop()  NOT foods.delete.last
+foods.pop
+p foods