AdventOfCode/2017/21/solution.py

#!/bin/python3
import sys,re, math
from copy import deepcopy
import numpy as np
from pprint import pprint
sys.path.insert(0, '../../')
from fred import list2int, toGrid, nprint,get_re

input_f = 'input'

part = 1
#########################################
#                                       #
#              Part 1+2                 #
#                                       #
#########################################

instructions = {}

grid = [
    ['.','#','.'],
    ['.','.','#'],
    ['#','#','#']
]

def toSet(input,regex):
    set = {}
    with open(input) as file:
        for line in file:
            r = get_re(regex, line.rstrip())
            set[r.group(1).replace('/','')] = r.group(2).replace('/','')
    return set
    
def need2split(grid):
    if len(grid) > 3:
        return True
    else:
        return False
    
def grid2line(grid):
    line = ''
    for i in grid:
        line += ''.join(i)
    return line

def line2grid(line):
    grid = []
    size = int(math.sqrt(len(line)))
    for i in range(size):
        grid.append(list(line[i*size:size*(1+i)]))
    return grid

def rotate90(grid):
    rotatedGrid = np.array(deepcopy(grid))
    return np.rot90(rotatedGrid)

def splitGrid(grid):
    #print('Splitting')
    #nprint(grid)
    size = len(grid)
    block_size = 0
    if size % 2 == 0:
        block_size = 2
    else:
        block_size = 3

    #print('Size:',size,' Block_size:',block_size)
    #else:
    #    print('Grind is wrong at splitGrid()')

    blocks = []

    for i in range(0, size, block_size):
        for j in range(0, size, block_size):
            block = [row[j:j+block_size] for row in grid[i:i+block_size]]
            #print(block)
            for bdx,b in enumerate(block):
                block[bdx] = list(b)
            #print(block)
            #input()
            blocks.append(block)  
    return blocks

def get_all_transformations(grid):
    grid = np.array(grid)
    transformations = set()
    
    for k in range(4): 
        rotated = np.rot90(grid, k)
        # Add original rotation
        if tuple(map(tuple, rotated)) not in transformations:
            transformations.add(tuple(map(tuple, rotated)))
            yield rotated
        
        # Add horizontal flip of rotation
        h_flip = np.flipud(rotated)
        if tuple(map(tuple, h_flip)) not in transformations:
            transformations.add(tuple(map(tuple, h_flip)))
            yield h_flip
        
        # Add vertical flip of rotation
        v_flip = np.fliplr(rotated)
        if tuple(map(tuple, v_flip)) not in transformations:
            transformations.add(tuple(map(tuple, v_flip)))
            yield v_flip


def findInst(grid,instructions):
    found = False
    new_grid = []
    grid = grid
    while not found:
            
        for transformed_grid in get_all_transformations(grid):

            #print(grid2line(transformed_grid))
            #input()

            try:
                new_grid = instructions[grid2line(transformed_grid)]

                found = True
                break
            except:
                continue

    return new_grid

def transform_grid(input_grid):
    # Determine the dimensions of the grid
    num_subgrids = len(input_grid)
    subgrid_rows = len(input_grid[0])  # Rows in each subgrid
    subgrid_cols = len(input_grid[0][0])  # Columns in each subgrid
    
    # Calculate the number of subgrids per row and column
    subgrids_per_row = int(num_subgrids ** 0.5)
    
    # Initialize the result
    result = []
    
    # Process each row of subgrids
    for subgrid_row_idx in range(subgrids_per_row):
        # Merge corresponding rows from subgrids in the current "row of subgrids"
        for row_idx in range(subgrid_rows):
            row = ''.join(
                ''.join(input_grid[subgrid_row_idx * subgrids_per_row + col_idx][row_idx])
                for col_idx in range(subgrids_per_row)
            )
            result.append(row)
    
    return result
rr = 0
if part == 1:
    rr = 5
if part == 2:
    rr = 18
instructions = toSet(input_f,r"^(.*) => (.*)$")

#print(instructions)
blocks = []
mixed_grid = [[]]
for i in range(0,rr):
    size = len(grid)
    print('i:',i)
    #nprint(grid)
    #print()
    if size % 3 == 0 or size % 2 == 0:
        if not need2split(grid):
            new_grid = findInst(grid,instructions)
            grid = line2grid(new_grid)
            #print(grid)
        else:
            blocks = splitGrid(grid)
            #print(blocks)

            #pprint(blocks)

            #print(len(blocks))
            #print(blocks)
            #print(blocks)
            #input()
            mixed_grid = []
            

            for i in range(0,len(blocks)):
                #print(findInst(blocks[i],instructions))
                x = line2grid(findInst(blocks[i],instructions))
                #print(x)
                #input()
                mixed_grid.append(x)   
            
            #print(mixed_grid)           
            grid = transform_grid(mixed_grid)
            #nprint(grid)
            #input()

    else:
        print('Something is wrong with the grid size of ', size)
    #input()
count = 0
for i in grid:
    count += i.count('#')
print(count)