[Python]代码    

# -*- coding: utf8 -*-  import random    data = [[0, 0, 0, 0],          [0, 0, 0, 0],          [0, 0, 0, 0],          [0, 0, 0, 0]]    _MAX_X = 4  _MAX_Y = 4  _RECT_SIZE = _MAX_X * _MAX_Y      class GameOverException(Exception):      pass      def zero_list(size):      return [0] * size      def initialize():      for index in range(_MAX_Y):          data[index] = zero_list(_MAX_X)        new_pos()      def is_empty(x, y):      try:          return data[y][x] == 0      except IndexError as e:          return False      def to_xy(no):      return no % _MAX_Y, no // _MAX_X      def get_random_pos():      no = random.randint(0, _RECT_SIZE - 1)      for index in range(no, _RECT_SIZE):          x, y = to_xy(index)          if is_empty(x, y):              return x, y        raise GameOverException      def print_map():      for row in data:          print(row)      def get_by_xy(x, y):      return data[y][x]      def get_row(index):      return data[index]      def get_col(index):      return [row[index] for row in data]      def replace_col(index, col):      assert type(col) == list      assert len(col) == _MAX_Y        for y in range(_MAX_Y):          data[y][index] = col[y]      def replace_row(index, row):      assert type(row) == list      assert len(row) == _MAX_X        for x in range(_MAX_X):          data[index][x] = row[x]      def merge_data(src, *, reverse=False):      pre_len = len(src)      source = [item for item in src if item != 0]      if reverse:          source.reverse()        for start in range(1, len(source) // 2 + 1):          for index in range(start, len(source) - start + 1):              moon = source[index - 1]              star = source[index]              if moon == star:                  moon += star                  star = 0              elif moon == 0:                  moon = star                  star = 0                source[index - 1] = moon              source[index] = star        source.extend(zero_list(pre_len - len(source)))      if reverse:          source.reverse()        return source    def new_pos():      x, y = get_random_pos()      data[y][x] = 2      def show():      print_map()      def vertical(*, reverse=False):      changed = False        for index in range(_MAX_X):          source = get_col(index)          summary = merge_data(source, reverse=reverse)          changed |= (summary != source)          replace_col(index, summary)        return changed    def horizontal(*, reverse=False):      changed = False        for index in range(_MAX_Y):          source = get_row(index)          summary = merge_data(source, reverse=reverse)          changed |= (summary != source)          replace_row(index, summary)        return changed      def up():      if vertical():          new_pos()      def down():      if vertical(reverse=True):          new_pos()      def left():      if horizontal():          new_pos()      def right():      if horizontal(reverse=True):          new_pos()      if __name__ == '__main__':      pass