diff --git a/day_1/code.py b/01_day/code.py similarity index 100% rename from day_1/code.py rename to 01_day/code.py diff --git a/day_1/code2.py b/01_day/code2.py similarity index 100% rename from day_1/code2.py rename to 01_day/code2.py diff --git a/day_1/input1.txt b/01_day/input1.txt similarity index 100% rename from day_1/input1.txt rename to 01_day/input1.txt diff --git a/day_1/input2.txt b/01_day/input2.txt similarity index 100% rename from day_1/input2.txt rename to 01_day/input2.txt diff --git a/day_2/code.py b/02_day/code.py similarity index 100% rename from day_2/code.py rename to 02_day/code.py diff --git a/day_2/input1.txt b/02_day/input1.txt similarity index 100% rename from day_2/input1.txt rename to 02_day/input1.txt diff --git a/day_2/input2.txt b/02_day/input2.txt similarity index 100% rename from day_2/input2.txt rename to 02_day/input2.txt diff --git a/day_3/code.py b/03_day/code.py similarity index 100% rename from day_3/code.py rename to 03_day/code.py diff --git a/day_3/input1.txt b/03_day/input1.txt similarity index 100% rename from day_3/input1.txt rename to 03_day/input1.txt diff --git a/day_3/input2.txt b/03_day/input2.txt similarity index 100% rename from day_3/input2.txt rename to 03_day/input2.txt diff --git a/day_3/main b/03_day/main similarity index 100% rename from day_3/main rename to 03_day/main diff --git a/day_3/main.c b/03_day/main.c similarity index 100% rename from day_3/main.c rename to 03_day/main.c diff --git a/day_3/tobin.py b/03_day/tobin.py similarity index 100% rename from day_3/tobin.py rename to 03_day/tobin.py diff --git a/day_4/code.py b/04_day/code.py similarity index 100% rename from day_4/code.py rename to 04_day/code.py diff --git a/day_4/input1.txt b/04_day/input1.txt similarity index 100% rename from day_4/input1.txt rename to 04_day/input1.txt diff --git a/day_4/input2.txt b/04_day/input2.txt similarity index 100% rename from day_4/input2.txt rename to 04_day/input2.txt diff --git a/day_4/input3.txt 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from day_6/input.txt rename to 06_day/input.txt diff --git a/day_7/code b/07_day/code similarity index 100% rename from day_7/code rename to 07_day/code diff --git a/day_7/code.hi b/07_day/code.hi similarity index 100% rename from day_7/code.hi rename to 07_day/code.hi diff --git a/day_7/code.hs b/07_day/code.hs similarity index 100% rename from day_7/code.hs rename to 07_day/code.hs diff --git a/day_7/code.js b/07_day/code.js similarity index 100% rename from day_7/code.js rename to 07_day/code.js diff --git a/day_7/code.o b/07_day/code.o similarity index 100% rename from day_7/code.o rename to 07_day/code.o diff --git a/day_7/example.txt b/07_day/example.txt similarity index 100% rename from day_7/example.txt rename to 07_day/example.txt diff --git a/day_7/input.txt b/07_day/input.txt similarity index 100% rename from day_7/input.txt rename to 07_day/input.txt diff --git a/day_8/code.py b/08_day/code.py similarity index 100% rename from day_8/code.py rename to 08_day/code.py diff --git a/day_8/example.txt b/08_day/example.txt similarity index 100% rename from day_8/example.txt rename to 08_day/example.txt diff --git a/day_8/example1.txt b/08_day/example1.txt similarity index 100% rename from day_8/example1.txt rename to 08_day/example1.txt diff --git a/day_8/input.txt b/08_day/input.txt similarity index 100% rename from day_8/input.txt rename to 08_day/input.txt diff --git a/day_9/code.js b/09_day/code.js similarity index 100% rename from day_9/code.js rename to 09_day/code.js diff --git a/day_9/example.txt b/09_day/example.txt similarity index 100% rename from day_9/example.txt rename to 09_day/example.txt diff --git a/day_9/input.txt b/09_day/input.txt similarity index 100% rename from day_9/input.txt rename to 09_day/input.txt diff --git a/day_10/code.py b/10_day/code.py similarity index 92% rename from day_10/code.py rename to 10_day/code.py index c4e1ba6..9b5a98d 100644 --- a/day_10/code.py +++ b/10_day/code.py @@ -1,11 +1,6 @@ import fileinput -scores = [ - 3, - 57, - 1197, - 25137 -] +scores = [3, 57, 1197, 25137] opening_chars = ['(', '[', '{', '<'] closing_chars = [')', ']', '}', '>'] @@ -23,10 +18,10 @@ for line in lines: complete = True for column, c in enumerate(line): if c in opening_chars: - stack.append(c) + stack.append(opening_chars.index(c)) if c in closing_chars: i = closing_chars.index(c) - if stack[-1] != opening_chars[i]: + if stack[-1] != i: expected_i = opening_chars.index(stack[-1]) # print(line) diff --git a/day_10/example.txt b/10_day/example.txt similarity index 100% rename from day_10/example.txt rename to 10_day/example.txt diff --git a/day_10/input.txt b/10_day/input.txt similarity index 100% rename from day_10/input.txt rename to 10_day/input.txt diff --git a/11_day/code.py b/11_day/code.py new file mode 100644 index 0000000..44d2d25 --- /dev/null +++ b/11_day/code.py @@ -0,0 +1,67 @@ +import pprint +import fileinput + +rows = [] +for line in fileinput.input(): + l = line.strip() + if l == '': + continue + rows.append(list(map(int, list(l)))) + +pprint.pprint(rows) + +def print_table(rows): + for r in rows: + print(''.join(map(str, r))) + +def is_all_zeros(rows): + return list(map(lambda r: ''.join(map(str, r)), rows)) == 10*[10*'0'] + +print_table(rows) + +flashes = 0 +for step in range(10000): + print(f'step #{step}') + locked = [] + pops = 1 + while pops > 0: + pops = 0 + for i in range(10): + for j in range(10): + if rows[i][j] >= 9: + pops += 1 + flashes += 1 + diagonals = [ + (i-1, j-1), + (i-1, j), + (i-1, j+1), + (i, j-1), + (i, j+1), + (i+1, j-1), + (i+1, j), + (i+1, j+1) + ] + rows[i][j] = 0 + locked.append((i, j)) + for y,x in diagonals: + if not (0 <= y < 10 and 0 <= x < 10): continue + if (y, x) in locked: continue + rows[y][x] += 1 + + for i in range(10): + for j in range(10): + if (i, j) in locked: continue + rows[i][j] += 1 + + if is_all_zeros(rows): + print(rows) + print_table(rows) + print(step+1) + break + + print_table(rows) + +pprint.pprint(rows) +print(flashes) + + diff --git a/11_day/example.txt b/11_day/example.txt new file mode 100644 index 0000000..ae21dd2 --- /dev/null +++ b/11_day/example.txt @@ -0,0 +1,5 @@ +11111 +19991 +19191 +19991 +11111 diff --git a/11_day/example2.txt b/11_day/example2.txt new file mode 100644 index 0000000..03743f6 --- /dev/null +++ b/11_day/example2.txt @@ -0,0 +1,10 @@ +5483143223 +2745854711 +5264556173 +6141336146 +6357385478 +4167524645 +2176841721 +6882881134 +4846848554 +5283751526 diff --git a/11_day/input.txt b/11_day/input.txt new file mode 100644 index 0000000..cbbdd4f --- /dev/null +++ b/11_day/input.txt @@ -0,0 +1,11 @@ +4781623888 +1784156114 +3265645122 +4371551414 +3377154886 +7882314455 +6421348681 +7175424287 +5488242184 +2448568261 + diff --git a/12_day/code.py b/12_day/code.py new file mode 100644 index 0000000..c44de00 --- /dev/null +++ b/12_day/code.py @@ -0,0 +1,74 @@ +import pprint +import itertools +import fileinput + +nodes = [] +edges = [] +for raw in fileinput.input(): + line = raw.strip() + if line == '': continue + [a,b] = line.split('-') + nodes += [a, b] + edges.append((a, b)) + +nodes = list(set(nodes)) +nodes.sort() + +graph = [[0 for j in range(len(nodes))] for i in range(len(nodes))] + +#pprint.pprint(graph) + +for (a,b) in edges: + i, j = nodes.index(a), nodes.index(b) + graph[i][j] = 1 + graph[j][i] = 1 + +visit_only_once = [e for e in nodes if e.lower() == e and e != 'start' and e != 'end'] + +start_index = nodes.index('start') +end_index = nodes.index('end') + +nodes_d = [(i,e) for i,e in enumerate(nodes)] + +print(f'{nodes_d=}') +print(f'{visit_only_once=}') + +visit_only_once_index = [nodes.index(e) for e in visit_only_once]+[start_index, end_index] + +def explore_path(stack, level, locked, s, did_visit_twice): + edges = [i for i,e in enumerate(graph[s]) if e] + + if s == end_index: + return [s] + [stack] + + paths = [] + for edge in edges: + if edge == start_index: continue + + if edge in visit_only_once_index: + if edge in locked: + if not did_visit_twice and edge != start_index and edge != end_index: + did_visit_twice = True + else: + continue + locked.add(edge) + + #print(f'{level=} , {nodes[edge]=}, {new_locked=}, {at_most=} ') + paths += explore_path([s]+stack, level+1, locked.copy(), edge, did_visit_twice) + return paths + +print('start exploring...') + +paths = explore_path([], 0, set(), start_index, False) + +all_paths = [ ''.join(map(str, p)) for p in paths ] + +res = list(set(all_paths)) + +for p in res: + new_p = list(map(int, list(p))) + #print([ nodes[i] for i in list(reversed(new_p))]) + +#print(res) + +print(f'There are {len(res)} paths') diff --git a/12_day/code_part_1.py b/12_day/code_part_1.py new file mode 100644 index 0000000..758e74d --- /dev/null +++ b/12_day/code_part_1.py @@ -0,0 +1,61 @@ +import pprint +import itertools +import fileinput + +nodes = [] +edges = [] +for raw in fileinput.input(): + line = raw.strip() + if line == '': continue + [a,b] = line.split('-') + nodes += [a, b] + edges.append((a, b)) + +nodes = list(set(nodes)) +nodes.sort() + +graph = [[0 for j in range(len(nodes))] for i in range(len(nodes))] + +#pprint.pprint(graph) + +for (a,b) in edges: + i, j = nodes.index(a), nodes.index(b) + graph[i][j] = 1 + graph[j][i] = 1 + +visit_only_once = [e for e in nodes if e.lower() == e and e != 'start' and e != 'end'] + +start_index = nodes.index('start') +end_index = nodes.index('end') + +print(f'{visit_only_once=}') + +visit_only_once_index = [nodes.index(e) for e in visit_only_once] + +possibles = [] + +def explore_path(stack, level, locked, s): + edges = [i for i,e in enumerate(graph[s]) if e] + + if s == end_index: + possibles.append(stack) + return + + for edge in edges: + new_locked = locked.copy() + if edge in locked: continue + if edge == start_index: continue + if edge in visit_only_once_index: + new_locked += [edge] + + #print(f'{level=} , {nodes[edge]=}, {new_locked=}') + explore_path([s]+stack, level+1, new_locked, edge) + +print('start exploring...') + +explore_path([], 0, [], start_index) + +for p in possibles: + print([ nodes[i] for i in list(reversed(p))]) + +print(f'There are {len(possibles)} paths') diff --git a/12_day/example1.txt b/12_day/example1.txt new file mode 100644 index 0000000..898cd56 --- /dev/null +++ b/12_day/example1.txt @@ -0,0 +1,7 @@ +start-A +start-b +A-c +A-b +b-d +A-end +b-end \ No newline at end of file diff --git a/12_day/example2.txt b/12_day/example2.txt new file mode 100644 index 0000000..62cc714 --- /dev/null +++ b/12_day/example2.txt @@ -0,0 +1,10 @@ +dc-end +HN-start +start-kj +dc-start +dc-HN +LN-dc +HN-end +kj-sa +kj-HN +kj-dc diff --git a/12_day/example3.txt b/12_day/example3.txt new file mode 100644 index 0000000..65f3833 --- /dev/null +++ b/12_day/example3.txt @@ -0,0 +1,18 @@ +fs-end +he-DX +fs-he +start-DX +pj-DX +end-zg +zg-sl +zg-pj +pj-he +RW-he +fs-DX +pj-RW +zg-RW +start-pj +he-WI +zg-he +pj-fs +start-RW diff --git a/12_day/input.txt b/12_day/input.txt new file mode 100644 index 0000000..4067b56 --- /dev/null +++ b/12_day/input.txt @@ -0,0 +1,24 @@ +yb-pi +jg-ej +yb-KN +LD-start +end-UF +UF-yb +yb-xd +qx-yb +xd-end +jg-KN +start-qx +start-ej +qx-LD +jg-LD +xd-LD +ej-qx +end-KN +DM-xd +jg-yb +ej-LD +qx-UF +UF-jg +qx-jg +xd-UF diff --git a/12_day/wow1.py b/12_day/wow1.py new file mode 100644 index 0000000..42fedc8 --- /dev/null +++ b/12_day/wow1.py @@ -0,0 +1,80 @@ +import fileinput + +def read_file(): + return [line.strip() for line in fileinput.input()] + +def make_graph(lines): + graph = {} + small_caves = set() + for line in lines: + a, b = line.split('-') + add_path(graph, a, b) + add_path(graph, b, a) + if a.islower(): + small_caves.add(a) + if b.islower(): + small_caves.add(b) + return graph, small_caves + + +def add_path(graph, a, b): + nodes = graph.get(a) + if nodes == None: + graph[a] = [b] + else: + nodes.append(b) + + +def find_paths(graph, + small_caves, + can_visit_twice, + current, + end, + path, + small_visited, + did_visit_twice=False): + + if current in small_caves: + if current in small_visited: + if can_visit_twice and not did_visit_twice and current != 'start' and current != 'end': + did_visit_twice = True + else: + return None + small_visited.add(current) + + path.append(current) + + if current == end: + return [path] + + paths = [] + connected = graph[current] + for cave in connected: + subpaths = find_paths(graph, small_caves, can_visit_twice, cave, end, + path.copy(), small_visited.copy(), did_visit_twice) + if subpaths != None: + paths.extend(subpaths) + + return paths + + +def print_graph(graph): + for key, value in graph.items(): + for cave in value: + print(f"{key} -> {cave}") + + +def print_paths(paths): + for path in paths: + print(','.join(path)) + + +input = read_file() +graph, small_caves = make_graph(input) + +paths = find_paths(graph, small_caves, False, 'start', 'end', [], set()) +print(f"Part 1: {len(paths)}") + +paths = find_paths(graph, small_caves, True, 'start', 'end', [], set()) +print(f"Part 2: {len(paths)}") + diff --git a/13_day/code.py b/13_day/code.py new file mode 100644 index 0000000..7f83d40 --- /dev/null +++ b/13_day/code.py @@ -0,0 +1,109 @@ +import fileinput + +def make_matrix(rows, columns, default = False): + return [ + [default for c in range(columns)] for r in range(rows) + ] + +def parse_input(lines): + X = [] + Y = [] + folds = [] + for l in lines: + l = l.strip() + if l == '': + continue + if 'fold along' in l: + folds.append( + ('x' if 'x' in l else 'y', int(l.split('=')[1])) + ) + else: + c = list(map(int, l.split(','))) + X.append(c[0]) + Y.append(c[1]) + + maxX, maxY = max(X), max(Y) + + rows = make_matrix(maxY+1, maxX+1) + for x,y in zip(X, Y): + rows[y][x] = True + + return X, Y, folds, rows + +def draw_board(rows): + for r in rows: + line = '' + for c in r: + if not c: + line += '.' + else: + line += 'X' + print(line) + +def merge_in(a, b): + new = [] + for i in range(len(a)): + if a[i] or b[i]: + new.append(True) + else: + new.append(False) + return new + +def get_column(rows, index): + out = [] + for r in rows: + out.append(r[index]) + return out + +def set_column(rows, j, col): + out = rows.copy() + for i,c in enumerate(col): + out[i][j] = c + return out + + +def fold_along(rows, along, c): + print(f'fold {along=} {c=}') + new_rows = [] + h = len(rows) + w = len(rows[0]) + if along == 'y': + new_rows = make_matrix(c, w) + for i in range(0, c): + if i > 2*c-h: + new_rows[i] = ( + merge_in( + rows[i], + rows[h-i-1] + ) + ) + if along == 'x': + new_rows = make_matrix(len(rows), c) + for j in range(0, c): + if j > 2*c-w: + new_rows = ( + set_column(new_rows, j, merge_in( + get_column(rows, j), + get_column(rows, w-j-1) + )) + ) + return new_rows + +def count_dots(rows): + count = 0 + for r in rows: + for c in r: + if c: count += 1 + return count + +def main(): + X, Y, folds, rows = parse_input(fileinput.input()) + after_fold = rows.copy() + for along, c in folds: + after_fold = fold_along(after_fold, along, c) + count = count_dots(after_fold) + print(count) + + draw_board(after_fold) + +main() diff --git a/13_day/example.txt b/13_day/example.txt new file mode 100644 index 0000000..32a8563 --- /dev/null +++ b/13_day/example.txt @@ -0,0 +1,21 @@ +6,10 +0,14 +9,10 +0,3 +10,4 +4,11 +6,0 +6,12 +4,1 +0,13 +10,12 +3,4 +3,0 +8,4 +1,10 +2,14 +8,10 +9,0 + +fold along y=7 +fold along x=5 \ No newline at end of file diff --git a/13_day/input.txt b/13_day/input.txt new file mode 100644 index 0000000..13a2037 --- /dev/null +++ b/13_day/input.txt @@ -0,0 +1,729 @@ +1302,268 +872,390 +164,653 +1257,768 +649,367 +314,747 +239,246 +572,431 +610,427 +495,876 +321,8 +457,553 +1174,140 +470,728 +216,266 +142,502 +611,831 +475,630 +216,504 +845,23 +99,427 +1037,334 +381,112 +616,859 +982,876 +561,322 +249,99 +987,652 +793,729 +606,579 +1017,140 +679,81 +544,0 +1274,259 +1235,246 +1200,266 +903,588 +807,103 +17,455 +527,829 +512,144 +523,37 +976,140 +662,490 +570,180 +1159,791 +816,271 +740,266 +149,805 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+1043,45 +162,241 +229,297 + +fold along x=655 +fold along y=447 +fold along x=327 +fold along y=223 +fold along x=163 +fold along y=111 +fold along x=81 +fold along y=55 +fold along x=40 +fold along y=27 +fold along y=13 +fold along y=6 + diff --git a/rename.sh b/rename.sh new file mode 100644 index 0000000..8535cf4 --- /dev/null +++ b/rename.sh @@ -0,0 +1,13 @@ +for f in *_day +do + fullfile="$f" + filename=$(basename "$fullfile") + new=$(echo $filename | awk '{split($1,a,"_"); printf "%s",a[1]}') + len=$(echo -n "$new" | wc -c) + if [[ $len == 1 ]]; then + new="0"$filename + else + new=$filename + fi + mv $filename $new +done