Хешове и keyword аргументи на блокове

Програмиране с Ruby

Курс във Факултета по Математика и Информатика към СУ

Решение на Шеста задача от Ивайло Чернев

Обратно към всички решения

Към профила на Ивайло Чернев

Резултати

  • 6 точки от тестове
  • 1 отнета точка
  • 5 точки общо
  • 14 успешни тест(а)
  • 0 неуспешни тест(а)

Код

module TurtleGraphics
class Turtle
attr_accessor :width, :height, :table, :position
def initialize(height, width)
@width = width
@height = height
@table = []
@position = [0, 0]
@direction = 0
@moves = [[0, 1], [1, 0], [0, -1], [-1, 0]]
row = []
(1..width).each { row << 0 }
(1..height).each { @table << row.clone }
@table[0][0] = 1
end
def draw(tool = nil, &block)
if block_given?
self.instance_eval &block
end
if tool.class == TurtleGraphics::Canvas::ASCII
tool.format @table
elsif tool.class == TurtleGraphics::Canvas::HTML
tool.format_table @table
else
@table
end
end
def move
@position[0] = @position[0] + @moves[@direction][0]
@position[1] = @position[1] + @moves[@direction][1]
@position[0] = 0 if position[0] == @height
@position[0] = (@height - 1) if position[0] < 0
@position[1] = 0 if position[1] == @width
@position[1] = (@width - 1) if position[1] < 0
@table[@position[0]][@position[1]] += 1
end
def turn_left
@direction -= 1
@direction = 3 if @direction < 0
end
def turn_right
@direction += 1
@direction = 0 if @direction > 3
end
def look(orientation)
@direction = case orientation
when :left
2
when :up
3
when :right
0
when :down
1
end
end
def spawn_at(row, column)
@table[0][0] = 0
@table[row][column] = 1
@position = [row, column]
end
end
module Canvas
class ASCII
attr_accessor :symbols
def initialize(symbols)
@symbols = symbols
end
def format(matrix)
pick = get_pick(matrix)
matrix.map { |row| format_row(row, pick) }.join("\n")
end
def format_row(row, pick)
format_rule = -> (element) do
intence = element.to_f / pick.to_f
interval = 1.0 / (@symbols.size - 1).to_f
index = 0
while interval * index < intence do index += 1 end
intence != 1.0 ? @symbols[index] : @symbols[-1]
end
row.map { |cell| format_rule.call cell }.join("")
end
def get_pick(matrix)
matrix.max_by { |element| element.max }.max
end
end
class HTML
def initialize(size)
@size = size
end
def format_table(matrix)
pick = get_pick(matrix)
style = get_style()
table = get_table(matrix, pick)
head = "<!DOCTYPE html>\n<html>\n<head>\n"
style = "\t<title>Turtle graphics</title>\n\n\t" + style + "</head>\n"
body = "<body>\n" + table + "</body>\n</html>\t"
html = head + style + body
end
def get_pick(matrix)
matrix.max_by { |element| element.max }.max
end
def get_style
table = "\t\ttable {\n\t\t\tborder-spacing: 0;\n\t\t}\n"
table_row = "\t\ttr {\n\t\t\tpadding: 0;\n\t\t}\n"
size = "\t\t\twidth: #{@size}px;\n\t\t\theight: #{@size}px;\n"
color = "\t\t\tbackground-color: black;\n\t\t\tpadding: 0;\n"
cell = "\t\ttd {\n" + size + color + "\t\t}\n"
style = "\t<style>\n" + table + table_row + cell + "\t</style>\n"
end
def format_row(row, pick)
format_rule = -> (steps) do
intensity = steps.to_f / pick.to_f
opacity = format('%.2f', intensity)
cell = "\t\t\t<td style=\"opacity: #{opacity}\"></td>\n"
end
row_body = row.map { |cell| format_rule.call cell }.join("")
"\t\t<tr>\n" + row_body + "\t\t</tr>\n"
end
def get_table(matrix, pick)
table_body = matrix.map { |row| format_row(row, pick) }.join("")
"\t<table>\n" + table_body + "\t</table>\n"
end
end
end
end

Лог от изпълнението

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Finished in 0.01214 seconds
14 examples, 0 failures

История (1 версия и 2 коментара)

Ивайло обнови решението на 02.12.2015 13:44 (преди над 8 години)

+module TurtleGraphics
+ class Turtle
+ attr_accessor :width, :height, :table, :position
+
+ def initialize(height, width)
+ @width = width
+ @height = height
+ @table = []
+ @position = [0, 0]
+ @direction = 0
+ @moves = [[0, 1], [1, 0], [0, -1], [-1, 0]]
+ row = []
+ (1..width).each { row << 0 }
+ (1..height).each { @table << row.clone }
+ @table[0][0] = 1
+ end
+
+ def draw(tool = nil, &block)
+ if block_given?
+ self.instance_eval &block
+ end
+ if tool.class == TurtleGraphics::Canvas::ASCII
+ tool.format @table
+ elsif tool.class == TurtleGraphics::Canvas::HTML
+ tool.format_table @table
+ else
+ @table
+ end
+ end
+
+ def move
+ @position[0] = @position[0] + @moves[@direction][0]
+ @position[1] = @position[1] + @moves[@direction][1]
+ @position[0] = 0 if position[0] == @height
+ @position[0] = (@height - 1) if position[0] < 0
+ @position[1] = 0 if position[1] == @width
+ @position[1] = (@width - 1) if position[1] < 0
+ @table[@position[0]][@position[1]] += 1
+ end
+
+ def turn_left
+ @direction -= 1
+ @direction = 3 if @direction < 0
+ end
+
+ def turn_right
+ @direction += 1
+ @direction = 0 if @direction > 3
+ end
+
+ def look(orientation)
+ @direction = case orientation
+ when :left
+ 2
+ when :up
+ 3
+ when :right
+ 0
+ when :down
+ 1
+ end
+ end
+
+
+ def spawn_at(row, column)
+ @table[0][0] = 0
+ @table[row][column] = 1
+ @position = [row, column]
+ end
+
+ end
+
+ module Canvas
+ class ASCII
+ attr_accessor :symbols
+
+ def initialize(symbols)
+ @symbols = symbols
+ end
+
+ def format(matrix)
+ pick = get_pick(matrix)
+ matrix.map { |row| format_row(row, pick) }.join("\n")
+ end
+
+ def format_row(row, pick)
+ format_rule = -> (element) do
+ intence = element.to_f / pick.to_f
+ interval = 1.0 / (@symbols.size - 1).to_f
+ index = 0
+ while interval * index < intence do index += 1 end
+ intence != 1.0 ? @symbols[index] : @symbols[-1]
+ end
+ row.map { |cell| format_rule.call cell }.join("")
+ end
+
+ def get_pick(matrix)
+ matrix.max_by { |element| element.max }.max
+ end
+ end
+
+ class HTML
+
+ def initialize(size)
+ @size = size
+ end
+
+ def format_table(matrix)
+ pick = get_pick(matrix)
+ style = get_style()
+ table = get_table(matrix, pick)
+ head = "<!DOCTYPE html>\n<html>\n<head>\n"
+ style = "\t<title>Turtle graphics</title>\n\n\t" + style + "</head>\n"
+ body = "<body>\n" + table + "</body>\n</html>\t"
+ html = head + style + body
+ end
+
+ def get_pick(matrix)
+ matrix.max_by { |element| element.max }.max
+ end
+
+ def get_style
+ table = "\t\ttable {\n\t\t\tborder-spacing: 0;\n\t\t}\n"
+ table_row = "\t\ttr {\n\t\t\tpadding: 0;\n\t\t}\n"
+ size = "\t\t\twidth: #{@size}px;\n\t\t\theight: #{@size}px;\n"
+ color = "\t\t\tbackground-color: black;\n\t\t\tpadding: 0;\n"
+ cell = "\t\ttd {\n" + size + color + "\t\t}\n"
+ style = "\t<style>\n" + table + table_row + cell + "\t</style>\n"
+ end
+
+ def format_row(row, pick)
+ format_rule = -> (steps) do
+ intensity = steps.to_f / pick.to_f
+ opacity = format('%.2f', intensity)
+ cell = "\t\t\t<td style=\"opacity: #{opacity}\"></td>\n"
+ end
+ row_body = row.map { |cell| format_rule.call cell }.join("")
+ "\t\t<tr>\n" + row_body + "\t\t</tr>\n"
+ end
+
+ def get_table(matrix, pick)
+ table_body = matrix.map { |row| format_row(row, pick) }.join("")
+ "\t<table>\n" + table_body + "\t</table>\n"
+ end
+
+ end
+
+ end
+end

Здравей,

Взимам ти точка за стил заради трудночетимите методи в ASCII и HTML:

  • Ако ти трябва помощен метод, дефинирай private такъв, не използвай ламбда, която веднага викаш.
  • Inline while-а е лоша идея. Ако толкова ти трябва, може да използваш postfix-ната версия (<код> while <условие>)
  • Генерирането на HTML се проследява трудно. За това допринасят \t\n символите и разделената логика, която обхваща няколко метода.

Погледни нашето решение и вземи идеи за решаване на горните проблеми и подобрение на кода.

Ами не измислих как да побера html-а на 10 реда за метод. Дори не разбрах как решения на колеги, които са написали четливо на отделни редове, не са счупили правилото за редове на метод.