day 5 in zig

This commit is contained in:
Scramble 2022-12-05 22:42:03 +00:00
parent 9262d1e49b
commit d491307031
3 changed files with 664 additions and 0 deletions

512
zig/5/input.txt Normal file
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@ -0,0 +1,512 @@
[T] [D] [L]
[R] [S] [G] [P] [H]
[G] [H] [W] [R] [L] [P]
[W] [G] [F] [H] [S] [M] [L]
[Q] [V] [B] [J] [H] [N] [R] [N]
[M] [R] [R] [P] [M] [T] [H] [Q] [C]
[F] [F] [Z] [H] [S] [Z] [T] [D] [S]
[P] [H] [P] [Q] [P] [M] [P] [F] [D]
1 2 3 4 5 6 7 8 9
move 3 from 8 to 9
move 2 from 2 to 8
move 5 from 4 to 2
move 7 from 1 to 4
move 3 from 8 to 2
move 3 from 2 to 7
move 1 from 7 to 4
move 3 from 2 to 9
move 4 from 7 to 9
move 1 from 5 to 2
move 2 from 3 to 4
move 5 from 9 to 5
move 6 from 9 to 3
move 5 from 9 to 5
move 1 from 9 to 7
move 2 from 3 to 1
move 7 from 3 to 9
move 2 from 7 to 2
move 5 from 2 to 4
move 1 from 2 to 9
move 2 from 1 to 9
move 7 from 6 to 1
move 2 from 7 to 3
move 2 from 3 to 9
move 1 from 7 to 4
move 1 from 9 to 2
move 3 from 1 to 8
move 2 from 3 to 4
move 5 from 9 to 2
move 1 from 3 to 9
move 8 from 5 to 7
move 1 from 6 to 1
move 15 from 4 to 1
move 4 from 2 to 5
move 5 from 9 to 7
move 1 from 9 to 5
move 5 from 1 to 2
move 3 from 8 to 9
move 1 from 7 to 6
move 11 from 1 to 2
move 7 from 5 to 3
move 4 from 2 to 6
move 7 from 3 to 4
move 3 from 5 to 9
move 2 from 2 to 5
move 5 from 1 to 8
move 2 from 6 to 8
move 3 from 8 to 9
move 9 from 4 to 9
move 9 from 7 to 4
move 2 from 8 to 1
move 1 from 8 to 7
move 6 from 2 to 7
move 5 from 2 to 4
move 5 from 7 to 2
move 2 from 1 to 7
move 2 from 6 to 4
move 7 from 7 to 1
move 3 from 2 to 6
move 1 from 8 to 7
move 2 from 9 to 3
move 2 from 3 to 1
move 1 from 2 to 5
move 4 from 6 to 5
move 2 from 2 to 3
move 3 from 5 to 7
move 1 from 5 to 3
move 9 from 1 to 7
move 2 from 9 to 5
move 13 from 4 to 1
move 5 from 7 to 2
move 3 from 3 to 1
move 2 from 2 to 9
move 1 from 2 to 7
move 5 from 5 to 6
move 2 from 2 to 4
move 5 from 1 to 3
move 9 from 7 to 8
move 2 from 9 to 5
move 3 from 5 to 4
move 5 from 9 to 2
move 10 from 4 to 8
move 1 from 4 to 1
move 2 from 8 to 4
move 4 from 8 to 2
move 3 from 6 to 8
move 7 from 8 to 7
move 10 from 9 to 3
move 7 from 3 to 2
move 11 from 2 to 3
move 13 from 3 to 9
move 1 from 6 to 3
move 1 from 1 to 2
move 1 from 2 to 8
move 3 from 3 to 4
move 1 from 2 to 9
move 1 from 4 to 1
move 10 from 8 to 3
move 11 from 9 to 7
move 1 from 6 to 2
move 14 from 7 to 1
move 2 from 2 to 9
move 4 from 7 to 6
move 1 from 2 to 4
move 3 from 4 to 2
move 4 from 2 to 9
move 10 from 3 to 4
move 3 from 6 to 1
move 5 from 9 to 5
move 5 from 5 to 8
move 1 from 9 to 7
move 2 from 9 to 6
move 1 from 9 to 8
move 2 from 4 to 8
move 1 from 4 to 5
move 2 from 3 to 1
move 2 from 3 to 7
move 27 from 1 to 2
move 2 from 7 to 1
move 9 from 4 to 6
move 9 from 6 to 5
move 5 from 8 to 6
move 26 from 2 to 3
move 1 from 2 to 5
move 1 from 2 to 7
move 1 from 8 to 4
move 1 from 7 to 8
move 24 from 3 to 5
move 1 from 8 to 5
move 1 from 4 to 3
move 1 from 7 to 1
move 1 from 8 to 9
move 7 from 1 to 7
move 8 from 6 to 4
move 4 from 7 to 6
move 1 from 3 to 9
move 2 from 9 to 1
move 3 from 7 to 9
move 8 from 4 to 6
move 3 from 9 to 1
move 1 from 3 to 6
move 1 from 8 to 2
move 10 from 5 to 4
move 1 from 3 to 8
move 13 from 5 to 3
move 1 from 2 to 9
move 1 from 8 to 9
move 1 from 3 to 8
move 1 from 9 to 2
move 3 from 6 to 9
move 7 from 4 to 9
move 4 from 3 to 9
move 2 from 6 to 8
move 2 from 4 to 5
move 10 from 9 to 3
move 1 from 1 to 9
move 1 from 4 to 8
move 1 from 1 to 4
move 1 from 4 to 5
move 4 from 6 to 3
move 1 from 9 to 5
move 1 from 6 to 9
move 2 from 6 to 5
move 1 from 9 to 2
move 1 from 6 to 7
move 18 from 5 to 2
move 22 from 3 to 7
move 19 from 7 to 1
move 3 from 8 to 5
move 4 from 9 to 3
move 2 from 7 to 2
move 1 from 8 to 1
move 19 from 1 to 3
move 2 from 7 to 5
move 13 from 3 to 9
move 4 from 1 to 2
move 3 from 5 to 1
move 11 from 9 to 1
move 11 from 2 to 8
move 3 from 9 to 3
move 3 from 5 to 2
move 2 from 1 to 4
move 5 from 2 to 7
move 12 from 1 to 5
move 2 from 4 to 5
move 9 from 5 to 8
move 1 from 5 to 3
move 4 from 2 to 3
move 2 from 7 to 5
move 6 from 2 to 8
move 17 from 8 to 9
move 2 from 9 to 6
move 2 from 7 to 1
move 15 from 9 to 6
move 2 from 2 to 4
move 9 from 8 to 5
move 2 from 1 to 3
move 12 from 6 to 2
move 2 from 3 to 9
move 5 from 6 to 3
move 4 from 5 to 3
move 11 from 3 to 4
move 2 from 9 to 4
move 6 from 5 to 2
move 13 from 4 to 3
move 1 from 4 to 5
move 1 from 4 to 8
move 18 from 2 to 6
move 2 from 5 to 3
move 1 from 8 to 3
move 1 from 2 to 5
move 1 from 7 to 8
move 28 from 3 to 6
move 2 from 3 to 4
move 3 from 5 to 9
move 2 from 5 to 9
move 3 from 9 to 3
move 5 from 3 to 4
move 1 from 9 to 3
move 1 from 9 to 1
move 1 from 3 to 4
move 45 from 6 to 2
move 1 from 8 to 3
move 2 from 4 to 6
move 5 from 4 to 2
move 1 from 3 to 7
move 3 from 2 to 9
move 1 from 4 to 8
move 3 from 6 to 1
move 42 from 2 to 8
move 2 from 9 to 2
move 4 from 2 to 6
move 2 from 2 to 7
move 1 from 9 to 6
move 2 from 8 to 9
move 4 from 1 to 8
move 1 from 6 to 4
move 1 from 4 to 8
move 1 from 2 to 5
move 3 from 7 to 4
move 39 from 8 to 3
move 7 from 8 to 5
move 8 from 5 to 7
move 35 from 3 to 1
move 4 from 3 to 7
move 10 from 7 to 2
move 2 from 9 to 6
move 3 from 4 to 2
move 1 from 7 to 5
move 1 from 7 to 8
move 1 from 5 to 4
move 12 from 1 to 6
move 1 from 8 to 1
move 1 from 4 to 5
move 14 from 6 to 8
move 9 from 8 to 6
move 5 from 6 to 1
move 11 from 2 to 9
move 1 from 9 to 8
move 6 from 8 to 3
move 6 from 9 to 2
move 8 from 1 to 9
move 3 from 3 to 6
move 7 from 1 to 4
move 1 from 5 to 9
move 8 from 9 to 8
move 7 from 6 to 8
move 1 from 9 to 3
move 3 from 6 to 4
move 3 from 9 to 1
move 4 from 3 to 2
move 1 from 6 to 7
move 1 from 4 to 2
move 13 from 1 to 7
move 6 from 4 to 8
move 1 from 7 to 3
move 1 from 4 to 6
move 1 from 9 to 5
move 1 from 3 to 5
move 19 from 8 to 9
move 1 from 6 to 5
move 6 from 9 to 2
move 2 from 5 to 8
move 1 from 5 to 2
move 4 from 1 to 4
move 8 from 9 to 4
move 3 from 9 to 8
move 2 from 9 to 1
move 6 from 7 to 5
move 12 from 4 to 2
move 6 from 8 to 3
move 1 from 4 to 1
move 1 from 3 to 1
move 13 from 2 to 3
move 4 from 5 to 3
move 1 from 4 to 9
move 1 from 8 to 9
move 12 from 3 to 2
move 1 from 9 to 1
move 2 from 5 to 9
move 3 from 9 to 5
move 1 from 7 to 5
move 3 from 7 to 3
move 1 from 5 to 4
move 1 from 5 to 8
move 9 from 2 to 3
move 2 from 2 to 3
move 3 from 1 to 9
move 1 from 8 to 9
move 3 from 9 to 1
move 9 from 2 to 6
move 1 from 9 to 5
move 6 from 2 to 3
move 2 from 6 to 9
move 3 from 6 to 3
move 1 from 4 to 3
move 2 from 9 to 6
move 2 from 7 to 2
move 2 from 2 to 8
move 24 from 3 to 7
move 2 from 5 to 6
move 2 from 8 to 2
move 7 from 2 to 8
move 8 from 3 to 6
move 2 from 1 to 3
move 1 from 1 to 2
move 1 from 5 to 2
move 15 from 7 to 4
move 9 from 7 to 9
move 7 from 9 to 1
move 5 from 8 to 1
move 4 from 1 to 4
move 19 from 4 to 3
move 22 from 3 to 5
move 1 from 7 to 5
move 9 from 5 to 4
move 6 from 1 to 3
move 6 from 3 to 1
move 4 from 5 to 4
move 1 from 2 to 1
move 1 from 2 to 6
move 4 from 6 to 1
move 1 from 3 to 6
move 3 from 6 to 3
move 2 from 9 to 8
move 2 from 5 to 3
move 2 from 5 to 1
move 10 from 6 to 4
move 4 from 4 to 9
move 7 from 4 to 3
move 2 from 8 to 7
move 4 from 9 to 3
move 5 from 5 to 7
move 1 from 5 to 1
move 1 from 6 to 3
move 1 from 8 to 4
move 1 from 8 to 3
move 13 from 4 to 5
move 1 from 1 to 8
move 6 from 5 to 3
move 1 from 7 to 6
move 5 from 7 to 6
move 9 from 1 to 8
move 1 from 8 to 4
move 1 from 7 to 1
move 1 from 4 to 1
move 5 from 3 to 7
move 3 from 7 to 9
move 1 from 5 to 4
move 6 from 8 to 6
move 1 from 9 to 3
move 2 from 9 to 5
move 7 from 5 to 9
move 1 from 7 to 5
move 2 from 5 to 3
move 10 from 6 to 8
move 2 from 6 to 1
move 1 from 4 to 9
move 1 from 7 to 5
move 8 from 8 to 2
move 1 from 1 to 7
move 1 from 9 to 7
move 1 from 5 to 1
move 3 from 9 to 8
move 7 from 8 to 7
move 6 from 7 to 1
move 1 from 8 to 7
move 4 from 7 to 1
move 16 from 3 to 7
move 4 from 3 to 1
move 5 from 7 to 8
move 16 from 1 to 4
move 9 from 1 to 7
move 1 from 3 to 4
move 15 from 4 to 8
move 1 from 3 to 1
move 2 from 1 to 6
move 2 from 4 to 9
move 17 from 8 to 2
move 6 from 9 to 5
move 8 from 7 to 8
move 2 from 6 to 9
move 4 from 5 to 7
move 2 from 8 to 5
move 1 from 5 to 9
move 11 from 2 to 6
move 4 from 6 to 1
move 5 from 2 to 8
move 2 from 9 to 2
move 1 from 9 to 3
move 3 from 1 to 8
move 1 from 3 to 6
move 7 from 6 to 9
move 2 from 5 to 4
move 6 from 7 to 4
move 4 from 8 to 1
move 1 from 5 to 2
move 1 from 6 to 1
move 7 from 9 to 8
move 2 from 7 to 9
move 9 from 2 to 9
move 5 from 9 to 3
move 3 from 2 to 8
move 4 from 8 to 7
move 9 from 7 to 2
move 3 from 1 to 3
move 14 from 8 to 1
move 2 from 8 to 3
move 1 from 9 to 4
move 3 from 7 to 9
move 8 from 3 to 9
move 2 from 2 to 7
move 12 from 1 to 8
move 4 from 1 to 6
move 2 from 6 to 7
move 1 from 6 to 7
move 9 from 4 to 7
move 9 from 7 to 4
move 1 from 1 to 6
move 2 from 3 to 6
move 2 from 6 to 8
move 12 from 9 to 8
move 2 from 6 to 9
move 2 from 9 to 7
move 1 from 8 to 5
move 5 from 7 to 5
move 1 from 9 to 1
move 3 from 4 to 1
move 5 from 4 to 8
move 4 from 1 to 7
move 1 from 4 to 2
move 19 from 8 to 4
move 2 from 7 to 5
move 14 from 8 to 5
move 2 from 7 to 8
move 3 from 9 to 8
move 19 from 4 to 2
move 9 from 2 to 4
move 2 from 7 to 8
move 15 from 5 to 9
move 15 from 9 to 8
move 1 from 5 to 9
move 11 from 8 to 7
move 4 from 5 to 8
move 1 from 5 to 9
move 2 from 9 to 5
move 2 from 2 to 6
move 14 from 2 to 9
move 12 from 8 to 9
move 3 from 8 to 4
move 7 from 9 to 2
move 4 from 7 to 9
move 1 from 6 to 9
move 1 from 7 to 5
move 1 from 6 to 2
move 3 from 5 to 4
move 19 from 9 to 4
move 1 from 5 to 1
move 1 from 9 to 8
move 1 from 1 to 7
move 1 from 8 to 9
move 4 from 7 to 2
move 3 from 7 to 6
move 18 from 4 to 2
move 17 from 2 to 3
move 2 from 6 to 8
move 17 from 3 to 6
move 13 from 2 to 1
move 2 from 8 to 3
move 2 from 2 to 9
move 6 from 1 to 9
move 1 from 3 to 4
move 1 from 3 to 9
move 8 from 6 to 4
move 20 from 4 to 8
move 3 from 4 to 8
move 15 from 8 to 2
move 11 from 2 to 6
move 2 from 1 to 7
move 7 from 9 to 8
move 6 from 9 to 3
move 1 from 6 to 5

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const std = @import("std");
const State = enum { Parse, Move };
pub fn main() !void {
var file = try std.fs.cwd().openFile("input.txt", .{});
defer file.close();
var a = std.io.bufferedReader(file.reader());
var readerStream = a.reader();
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
const allocator = gpa.allocator();
const stackCharWidth = 4;
var stackCount: ?u32 = null;
var state = State.Parse;
var stacks = std.ArrayList(std.ArrayList(u8)).init(allocator);
defer {
for (stacks.items) |stack| {
stack.deinit();
}
stacks.deinit();
}
var buf: [200]u8 = undefined;
while (try readerStream.readUntilDelimiterOrEof(&buf, '\n')) |line| {
switch (state) {
State.Parse => {
if (stackCount == null) {
// first iteration - allocate stacks
stackCount = (@intCast(u32, line.len) + 1) / stackCharWidth;
var i: u32 = 0;
while (i < stackCount.?) : (i += 1) {
try stacks.append(std.ArrayList(u8).init(allocator));
}
}
if (std.mem.eql(u8, line, "")) {
// done parsing
state = State.Move;
for (stacks.items) |*stack| {
_ = stack.pop(); // the stack's index number that also gets parsed
std.mem.reverse(u8, stack.items);
}
} else {
// parse stacks
for (stacks.items) |*stack, i| {
const charIdx = i * stackCharWidth + 1;
const char = line[charIdx .. charIdx + 1];
if (char[0] != ' ') try stack.append(char[0]);
}
}
},
State.Move => {
var tokens = std.mem.split(u8, line, " ");
_ = tokens.next(); // skip "move"
const iterations = try std.fmt.parseInt(u32, tokens.next().?, 10);
_ = tokens.next(); // skip "from"
const src = try std.fmt.parseInt(u32, tokens.next().?, 10) - 1;
_ = tokens.next(); // skip "to"
const dest = try std.fmt.parseInt(u32, tokens.next().?, 10) - 1;
var i: u32 = 0;
while (i < iterations) : (i += 1) {
const tmp = stacks.items[src].pop();
try stacks.items[dest].append(tmp);
}
},
}
}
for (stacks.items) |*stack| {
std.debug.print("{c}", .{stack.pop()});
}
std.debug.print("\n", .{});
}

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zig/5/part2.zig Normal file
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const std = @import("std");
const State = enum { Parse, Move };
pub fn main() !void {
var file = try std.fs.cwd().openFile("input.txt", .{});
defer file.close();
var a = std.io.bufferedReader(file.reader());
var readerStream = a.reader();
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
const allocator = gpa.allocator();
const stackCharWidth = 4;
var stackCount: ?u32 = null;
var state = State.Parse;
var stacks = std.ArrayList(std.ArrayList(u8)).init(allocator);
defer {
for (stacks.items) |stack| {
stack.deinit();
}
stacks.deinit();
}
var buf: [200]u8 = undefined;
while (try readerStream.readUntilDelimiterOrEof(&buf, '\n')) |line| {
switch (state) {
State.Parse => {
if (stackCount == null) {
// first iteration - allocate stacks
stackCount = (@intCast(u32, line.len) + 1) / stackCharWidth;
var i: u32 = 0;
while (i < stackCount.?) : (i += 1) {
try stacks.append(std.ArrayList(u8).init(allocator));
}
}
if (std.mem.eql(u8, line, "")) {
// done parsing
state = State.Move;
for (stacks.items) |*stack| {
_ = stack.pop(); // the stack's index number that also gets parsed
std.mem.reverse(u8, stack.items);
}
} else {
// parse stacks
for (stacks.items) |*stack, i| {
const charIdx = i * stackCharWidth + 1;
const char = line[charIdx .. charIdx + 1];
if (char[0] != ' ') try stack.append(char[0]);
}
}
},
State.Move => {
var tokens = std.mem.split(u8, line, " ");
_ = tokens.next(); // skip "move"
const iterations = try std.fmt.parseInt(u32, tokens.next().?, 10);
_ = tokens.next(); // skip "from"
const src = try std.fmt.parseInt(u32, tokens.next().?, 10) - 1;
_ = tokens.next(); // skip "to"
const dest = try std.fmt.parseInt(u32, tokens.next().?, 10) - 1;
var i: u32 = 0;
while (i < iterations) : (i += 1) {
const tmp = stacks.items[src].pop();
try stacks.items[dest].append(tmp);
}
const destItems = stacks.items[dest].items;
std.mem.reverse(u8, destItems[destItems.len - iterations ..]);
},
}
}
for (stacks.items) |*stack| {
std.debug.print("{c}", .{stack.pop()});
}
std.debug.print("\n", .{});
}