Created
October 22, 2014 05:27
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bricks
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# coding: utf-8 | |
class Board | |
def initialize(c, r) | |
@column = c | |
@row = r | |
@board = c.times.map { Array.new(r,false)} | |
end | |
def fill!(c, r) | |
@board[c][r] = true; | |
end | |
def filled?(c, r) | |
@board[c][r] | |
end | |
def c | |
@column | |
end | |
def r | |
@row | |
end | |
def can_be_filled?(c, r) | |
if (c < 0 or r < 0) or (c >= @column or r >= @row) or filled?(c, r) | |
return false | |
else | |
return true | |
end | |
end | |
def board | |
@board | |
end | |
def board=(board) | |
@board = board | |
end | |
def full? | |
@board.each do |c| | |
c.each do |block| | |
return false unless block | |
end | |
end | |
return true | |
end | |
end | |
def deep_copy(board) | |
new_board = Board.new(board.c, board.r) | |
new_board.board = board.board.map{|r| r.dup} | |
new_board | |
end | |
def deep_copy_bricks(bricks) | |
new_bricks = Bricks.new | |
new_bricks.bricks = bricks.bricks.map{ |brick| brick.dup } | |
new_bricks.parent = bricks.parent | |
new_bricks | |
end | |
class Bricks | |
attr_accessor :parent, :bricks | |
def initialize | |
@bricks = [] | |
@parent | |
end | |
def add_brick(c, r) | |
@bricks << [c, r] | |
end | |
def full? | |
@bricks.length == 5 | |
end | |
end | |
# save board | |
def try_next(board, c, r, bricks) | |
if board.full? | |
puts "board full" | |
puts bricks.bricks.length | |
if bricks.full? | |
@@success_brickses << bricks | |
end | |
return true | |
end | |
if bricks.full? | |
new_brick_t = Bricks.new() | |
new_brick_t.parent = bricks | |
bricks = new_brick_t | |
end | |
[1,0, -1].each do |c_diff| # 尝试过每个方向,没有可能的解 | |
[1,0,-1].each do |r_diff| | |
new_c = c + c_diff | |
new_r = r + r_diff | |
if ! (c_diff == 0 and r_diff == 0) and board.can_be_filled?(new_c, new_r) | |
copyed_board = deep_copy(board) | |
copyed_board.fill!(new_c, new_r) | |
new_bricks = deep_copy_bricks(bricks) | |
new_bricks.add_brick(new_c, new_r) | |
try_next(copyed_board, new_c, new_r, new_bricks) | |
end | |
end | |
end | |
return false | |
end | |
@@success_brickses = [] | |
board = Board.new(3,5) | |
bricks = Bricks.new | |
bricks.add_brick(0, 0) | |
board.fill!(0, 0) | |
try_next(board, 0, 0, bricks) | |
@@success_brickses |
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