Gregory Eglen

Fibonacci Sequence

This Ruby program will find the nth number in a Fibonacci sequence.

def recursive_fib(num)
	return 0 if num == 0
	return 1 if num == 1
	recursive_fib(num-=1) + recursive_fib(num-=2)
end

def iterative_fib(num)
	num -= 2
	previous_number = 0
	next_number = 1
	sum = previous_number + next_number
	num.times do
		sum = previous_number + next_number
		previous_number = next_number
		next_number = sum
	end
puts sum   
end

class LinkedListNode
	attr_accessor :value, :next_node

	def initialize(value, next_node=nil)
			@value = value
			@next_node = next_node
	end
end

def reverse_list(list, previous=nil)
	while list
		previous = LinkedListNode.new(list.value, previous)
		list = list.next_node
	end
	return previous
end

def print_values(list_node)
	if list_node
		print "#{list_node.value} --> "
		print_values(list_node.next_node)
	else
		print "nil\n"
		return
	end
end

node1 = LinkedListNode.new(37)
node2 = LinkedListNode.new(99, node1)
node3 = LinkedListNode.new(12, node2)

print_values(node3)
puts "-----------------------------"
print_values(reverse_list(node3))

Reverse a Linked List

This Ruby program will take a linked list data structure and reverse it

Image Blur

This Ruby program will take a representation of an image, specifically a nested array of 0s representing blank space and 1s representing one pixel of an image, and using user input will blur the image around the pixel by changing the 0s surrounding it to 1s.

class Image
	attr_accessor :arr

	def initialize(arr)
		self.arr = arr
	end 

	def height
		arr.length
	end

	def width
		arr[0].length
	end

	def output_image
		arr.each do |row|
			puts row.join
		end
	end

	def blur_coordinates
		coordinates = []
		arr.each_with_index do |row, row_index|
			row.each_with_index do |pixel, pixel_index|
				if pixel == 1
					coordinates << [row_index, pixel_index]
				end
			end
		end
		coordinates
	end



	def create_blur
		blur_coordinates.each do |blur_row, blur_pixel|
			arr[blur_row - 1][blur_pixel] = 1 unless blur_row == 0
			arr[blur_row + 1][blur_pixel] = 1 unless blur_row >= height - 1
			arr[blur_row][blur_pixel - 1] = 1 unless blur_pixel == 0
			arr[blur_row][blur_pixel + 1] = 1 unless blur_pixel >= width - 1
		end
	end

	def blur(distance)
		distance.times do
			create_blur
		end
	end
end


image = Image.new([
[0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0],
[0,0,0,1,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,1]
])

puts "Your original image"
puts " "
image.output_image
puts " "
puts "How far would you like to blur this image?"
distance = gets.chomp.to_i
puts " "
puts "Your blurred image"
puts " "
image.blur(distance)
image.output_image

Ruby on Rails Chess

Worked on an Agile software development team building a chess application. Under the guidance of a senior software engineer, we had weekly Agile team meetings for code reviews, sprint planning, and feature assignments.

GitHub Repo | Live Site

Yelp Clone

A Yelp clone that integrates with the Google Maps API and includes features like user comments, star ratings, image uploading, and user authentication.

GitHub Repo | Live Site

Two-Sided Market Place

A two-sided, video-streaming marketplace platform that features credit card payment capabilities, user role management, complex user interfaces, and advanced database relationships.

GitHub Repo | Live Site

Test Driven Development

An Instagram clone that was built using industry-standard, test-driven development following numerous red/green/refactor cycles.

GitHub Repo | Live Site

Single Page Todo Application

This single-page to-do application features a fluid user interface that– by using JavaScript– allows users to rapidly add dynamic content.

GitHub Repo | Live Site

Quote Generator

A database-powered quote generator with a mobile-first design, using the Ruby on Rails framework, HTML, and CSS. Uses Git and GitHub for version control, and launched on Heroku.

GitHub Repo | Live Site