From: Brendan Hansen Date: Fri, 3 Dec 2021 15:01:16 +0000 (-0600) Subject: added day 3 of aoc-2021 X-Git-Url: https://git.brendanfh.com/?a=commitdiff_plain;h=8514b99aedd08ec72f8dca85290d1b1d0f7001fa;p=onyx.git added day 3 of aoc-2021 --- diff --git a/core/io/reader.onyx b/core/io/reader.onyx index 3eccde39..ca14f2f4 100644 --- a/core/io/reader.onyx +++ b/core/io/reader.onyx @@ -173,7 +173,7 @@ read_i32 :: (use reader: ^Reader) -> i32 { start += 1; curr, err = peek_byte(reader); - if err != .None do break; + if err != .None || start == end do break; } if is_negative do n = -n; @@ -199,7 +199,7 @@ read_i64 :: (use reader: ^Reader) -> i64 { start += 1; curr, err = peek_byte(reader); - if err != .None do break; + if err != .None || start == end do break; } if is_negative do n = -n; @@ -218,7 +218,7 @@ read_u32 :: (use reader: ^Reader) -> u32 { start += 1; curr, err = peek_byte(reader); - if err != .None do break; + if err != .None || start == end do break; } return n; @@ -236,7 +236,7 @@ read_u64 :: (use reader: ^Reader) -> u64 { start += 1; curr, err = peek_byte(reader); - if err != .None do break; + if err != .None || start == end do break; } return n; diff --git a/tests/aoc-2021/day03 b/tests/aoc-2021/day03 new file mode 100644 index 00000000..dec7ee92 --- /dev/null +++ b/tests/aoc-2021/day03 @@ -0,0 +1,2 @@ +Part 1: 738234 +Part 2: 3969126 diff --git a/tests/aoc-2021/day03.onyx b/tests/aoc-2021/day03.onyx new file mode 100644 index 00000000..8779a638 --- /dev/null +++ b/tests/aoc-2021/day03.onyx @@ -0,0 +1,83 @@ +PART :: 2 + +#load "core/std" + +use package core + +read_binary :: (r: ^io.Reader) -> i32 { + n := 0; + + io.skip_whitespace(r); + + curr, err := io.peek_byte(r); + if err != .None do return n; + while curr == #char "0" || curr == #char "1" { + n *= 2; + n += cast(u32) (curr - #char "0"); + + r.start += 1; + curr, err = io.peek_byte(r); + if err != .None || r.start == r.end do break; + } + + return n; +} + +main :: (args) => { + BITS :: 12 + + for io.with_file("./tests/aoc-2021/input/day03.txt") { + reader := io.reader_make(it); + + nums := array.make(i32); + while !io.reader_empty(^reader) { + nums << read_binary(^reader); + } + + ones_count: [BITS] i32; // Every digit is 12-bits + for BITS { + ones_count[it] = 0; + for num: nums { + if num & (1 << it) != 0 do ones_count[it] += 1; + } + } + + num1 := 0; + for BITS do num1 |= (1 << it) if ones_count[it] >= (nums.count / 2) else 0; + + num2 := ((1 << BITS) - 1) & (~num1); + + printf("Part 1: {}\n", num1 * num2); + + oxygen_array := array.copy(^nums); + co2_array := array.copy(^nums); + + filter_array :: macro (arr: [..] i32, index: i32, comparison: Code) { + A := 0; + B := (arr.count + 1) / 2; + + // Count the number of ones + for arr { + if (it & (1 << index)) != 0 do A += 1; + } + + expected := (1 << index) if (#insert comparison) else 0; + + while i := 0; i < arr.count { + defer i += 1; + + if (arr[i] & (1 << index)) != expected { + array.fast_delete(^arr, i); + i -= 1; + } + } + } + + for iter.as_iterator(range.{ BITS - 1, 0, -1 }) { + filter_array(oxygen_array, it, #(A >= B)); + filter_array(co2_array, it, #(A < B)); + } + + printf("Part 2: {}\n", oxygen_array[0] * co2_array[0]); + } +} \ No newline at end of file diff --git a/tests/aoc-2021/input/day03.txt b/tests/aoc-2021/input/day03.txt new file mode 100644 index 00000000..a36715c4 --- /dev/null +++ b/tests/aoc-2021/input/day03.txt @@ -0,0 +1,1000 @@ +000001000101 +101011100101 +100011100110 +101001111000 +000001000110 +000110100010 +100010101110 +000011001110 +110001101011 +101100110111 +101011011110 +011110010101 +010011010011 +111101110011 +001111011001 +010100101101 +110110110111 +011111101100 +000000101011 +100010010011 +011010000001 +111000111011 +001111111100 +001111110111 +010100011100 +001010110100 +010110011000 +001010011110 +001110010010 +110100111100 +110010110000 +000110111000 +110011000110 +010011011111 +011000010101 +010101010100 +000010001101 +011001101100 +101100110011 +100011110101 +110010011010 +000011100010 +001100010001 +001100011100 +100010011111 +000001111110 +011111111000 +001100010011 +011011010101 +111000011010 +001110110111 +000001101000 +111011111010 +000100101111 +110100100100 +110000110011 +111100101100 +101011101111 +101101010111 +011111001010 +110010111000 +110111110001 +110011101000 +111101011011 +001001101110 +110110010100 +000001110111 +111111010001 +100101100101 +100100110010 +100100010010 +001100111110 +010110101111 +110000001111 +110001011001 +100001011000 +101101100111 +101100100100 +000111001100 +100101101110 +010010000011 +100010110110 +110010101101 +000011011001 +010011110100 +101110100111 +000100001001 +000100010011 +010111010101 +011010001000 +100011101100 +111010101000 +111101100110 +100110010011 +111100011000 +101111111110 +111001011110 +010101110101 +011110101100 +000100101101 +110100110101 +100100001011 +100110100110 +000011010000 +100011010000 +000010110101 +011010101110 +100001001000 +111011101111 +001011101000 +101110101110 +101101000010 +110100001000 +001010101010 +011011110101 +101110110000 +110011010100 +010010100000 +011001110001 +011110111110 +101100001100 +100110111111 +111101001000 +110001001010 +111000100110 +000000001001 +100100100011 +111111000011 +111001100110 +110001110001 +010001111011 +000010110011 +111011111100 +011010101010 +111001101001 +111101100101 +101100000001 +000110111001 +101101011001 +000100110011 +010010101010 +110000100010 +001101010100 +100000010101 +101011100100 +000000110000 +001111010110 +011011100111 +110010010111 +101101100101 +110111010110 +011001100011 +101100111010 +100011011000 +011001011001 +110011001100 +111111111001 +101100011101 +111110110101 +010110010101 +001110110100 +111101000000 +011001111100 +000101100010 +010100111110 +000101011000 +010011001110 +011111111101 +000000110101 +100101001000 +101110100110 +001001010010 +000001000000 +000101011011 +010001011111 +000111111111 +010100101001 +100111110001 +110110011110 +110111010011 +001010100010 +101100101011 +110010110101 +010001100001 +110110110100 +111011111011 +111100111100 +111101111001 +011000110111 +111010100000 +011101001100 +111000011000 +111100100111 +110110111001 +000100000111 +111101100001 +101010011111 +011000001011 +101111111000 +100110101011 +100111101001 +110101000111 +000111010000 +010011011001 +110101101111 +000001011010 +100001000110 +011011101110 +110100011111 +000101010110 +100001010100 +010000101011 +110111100001 +010111011011 +110101011110 +100111010010 +111000011101 +100001111110 +101110001100 +101011110000 +001110000010 +010001001000 +011011001001 +100100110100 +111111011001 +100011110111 +000001001001 +110010000110 +110001011000 +000000001100 +101111010101 +101110011100 +000000101101 +100110101001 +111010110010 +010111010010 +010101111001 +100010101000 +011001000111 +011011110100 +101010000110 +011010111011 +101100100001 +000101001110 +101110111001 +000010000101 +001011110110 +100000101000 +000010000110 +001011010100 +111101011000 +001010111001 +001111000000 +000100100001 +100101011000 +100000010010 +111101100010 +000011000111 +000110001000 +001110101101 +010011011110 +011101100000 +010100000001 +001110010001 +010000000100 +000100010010 +000101000011 +000111100001 +111010110100 +100111100110 +100100001001 +001111111111 +101010001100 +110011001001 +000011010101 +101001001111 +010010001100 +001010110010 +100011110110 +100001111010 +100100101001 +111010111000 +111011110111 +011110100000 +101110000010 +111111111000 +000110011010 +010010000111 +000111101000 +010100110110 +010001011010 +011001101010 +101010000101 +011110011100 +000000000110 +001001000110 +000001001011 +100011001001 +001001100011 +100101001110 +110110101101 +001001100110 +110000011111 +011110101011 +010111001001 +101011010010 +011101110000 +000000011110 +010000101101 +001000000111 +001010001010 +101111100111 +010111101001 +101010001000 +010110110001 +101110100010 +001001110101 +011000100100 +111011011110 +000101110101 +111010100110 +100110011011 +100010100010 +001001111101 +110110111010 +101101100011 +011000011000 +010011010000 +010000111100 +110110001101 +011000111101 +011101010011 +001000000001 +101010011100 +101111011100 +011010101111 +001110110010 +001111100011 +001011010011 +110000001110 +000000110111 +110011101100 +010000101100 +000101001010 +101010110111 +011100000001 +110011101111 +100011111111 +110100011100 +111000100111 +000000001000 +100011011100 +110010000101 +100110010010 +000100100000 +010101100110 +010100010011 +000110100111 +111001010001 +010001011011 +100011010101 +000100001010 +010000001000 +010011101011 +010100000101 +001111001100 +101000000001 +010010100101 +011001111000 +000101101001 +010101011110 +000001010001 +010110000101 +010000011111 +100110111011 +001010010100 +001100100001 +011111111001 +011100101001 +101001111100 +110100101100 +010010101001 +101000001010 +010010010101 +101000110011 +011100010000 +001001111010 +101011010111 +100100100111 +110001101111 +100000101101 +000111110100 +000010110110 +010001100101 +110000111111 +001011000100 +011010011100 +011110011010 +010100101111 +001001010100 +101111011111 +000100111100 +111110010011 +110011010010 +011100111101 +001000011111 +100111000101 +110001100100 +110000110101 +011001001111 +100110010101 +100011001111 +100010000111 +111000110101 +111000000000 +101101010001 +010001000100 +010000101110 +011111110001 +011010101000 +101101111110 +100101101111 +001111101100 +110011100100 +001011100010 +001101001010 +011110010011 +000100011101 +011000010011 +111110101111 +101101110010 +000011101010 +001010110101 +111111000110 +100000101011 +001000111111 +101011110100 +001001110001 +100111101010 +000111110101 +010110100010 +110011010111 +010110110111 +001100100100 +111000001111 +011000010000 +101010000111 +111101111010 +011101100010 +011000001101 +010000010010 +101010110000 +010000100000 +111011100100 +101101011000 +011000010110 +101111111111 +000000111101 +101100110110 +011000110011 +110111100000 +010101111100 +010101101011 +100011001101 +101100111011 +111000111010 +000110010111 +111111001111 +101010111010 +111011101001 +001111001110 +010010001101 +111110000100 +100000000100 +011101011101 +010000011101 +010001011000 +000110011000 +010001101011 +110110000011 +111110110000 +101001011100 +100011110010 +100000010011 +111011101101 +000101101110 +010000100111 +011000000001 +000111100100 +110111111001 +111010111001 +101111100101 +100110000011 +110010011101 +010110111010 +011110001001 +110000100000 +001000010100 +010101101001 +100100011110 +011000100101 +010010001010 +001010001111 +101011001010 +011110101111 +110011001111 +111001001011 +000000111001 +010010101100 +100101010011 +011111011000 +101010100110 +110101001101 +011000100000 +000101111011 +110011100010 +111011100001 +010001111000 +111110000101 +001100000001 +001101001111 +110001010101 +010011111001 +100100101000 +110011011110 +100011101101 +100000011011 +101101101010 +100111111100 +100001000001 +110101111111 +010000100110 +011010010101 +110011010110 +101001010011 +111010000001 +000100110101 +001100100111 +001011000011 +101110010000 +011010111110 +110101101011 +011010001110 +101100101111 +011111011011 +101110011111 +011000110101 +101100001011 +001010001100 +110111101011 +100010001100 +100111100111 +110000111011 +011001101000 +001100010111 +001101001001 +001111010011 +100111000111 +111011010100 +000011101110 +111101000011 +010000011001 +111101101000 +000111011100 +010100001001 +110011111110 +001011010010 +111000010100 +100001010000 +101000000000 +011110000000 +111111110001 +101010100011 +001011111010 +110011101110 +011110001011 +101011100000 +010101011100 +010001101101 +010010110110 +101011010100 +010001001100 +111001111010 +101111111101 +101000101011 +010010000100 +000011110001 +110010001000 +010111101011 +111010010101 +010110100111 +110000100110 +000011111110 +001000101011 +000000000010 +011100100010 +011110010000 +000010011111 +001000011000 +001111000110 +110110011101 +010100110010 +101101100110 +001101100100 +111000001000 +001011100100 +110110010001 +000100101010 +100100111111 +000100111011 +100001000011 +101011001001 +000110101111 +010110111111 +101100010011 +111010110101 +001010001110 +111000100011 +011000110001 +010000110000 +101001100110 +011001010001 +001011001111 +101111111010 +110111111100 +010000010001 +000100101011 +000000011100 +110010000011 +111000010000 +110101111011 +001010100100 +001001000111 +110110001111 +011111001111 +010010111000 +011010011000 +111100111101 +100100101011 +000110001101 +110011001101 +000000100010 +001000110100 +001010110001 +110001000110 +111011000101 +100001010011 +100111011101 +010101110000 +110010000010 +010001111010 +111010111111 +010110001101 +110001110101 +100110101100 +000001011011 +111111011111 +011001011011 +000101110011 +000011110000 +100100010110 +100000010001 +011100110110 +101011101011 +010100101110 +010011011101 +001001111000 +000000011101 +010101100000 +001000100011 +011011111001 +110011100000 +100000110111 +010000000011 +001010011010 +011100010110 +101010100001 +001110111000 +110101000110 +001110011010 +010100001011 +001001010110 +011010000110 +010010101000 +001110100011 +110101011001 +101111101001 +001101110111 +110101111001 +011010110110 +101001000101 +000000100111 +101011111110 +111111100001 +101000111111 +000110100011 +010001110110 +000111101010 +000011011101 +100001101010 +001011101111 +111100010101 +110110111000 +110110011111 +010110001011 +011010000101 +110101110011 +101011101100 +011101111100 +000111011010 +100001011101 +000010001111 +000110111100 +000101000101 +101010101010 +011111001001 +010111110011 +111010000000 +001100011101 +001000101000 +100101010100 +010011111110 +010011000001 +010110100100 +010011001010 +010010100010 +111100001011 +100110100111 +000010110010 +101111000100 +101000000011 +110101011000 +001000010111 +100100110111 +000000000011 +001011111000 +100101000101 +101100010101 +101100000101 +000101001111 +101111010001 +111101011110 +000000010001 +100001110100 +101111000000 +101000101110 +010100001110 +010000110011 +101101110110 +001011000101 +000100100010 +111100010000 +100000100010 +011101000101 +111000110111 +110110001011 +101101111001 +011001111010 +001111011010 +111010101100 +101110011101 +100110101101 +101011011011 +110100000001 +011001100100 +000001011101 +000011011110 +100101101101 +001110100110 +110011110111 +010001110000 +100011100011 +001110011001 +011011110110 +100000010100 +001010101101 +010110000111 +010001011001 +001111111000 +011000011001 +110101101100 +110101000011 +100000011101 +001100001011 +000011000000 +111000010101 +110000011010 +101111000111 +011101010000 +011111000111 +101010111000 +011000110110 +011101101001 +111110101010 +001010111000 +000010011100 +000100111010 +000111100010 +010101111110 +001000011101 +110110111011 +011001101110 +011111111100 +001100100011 +000100001101 +011100001111 +000001010011 +011001111110 +100001100010 +010001110100 +011010110001 +001010101000 +101100001001 +101010000001 +000001101100 +100000000111 +010100010111 +110001111001 +000010100111 +011100101000 +011010110100 +100111100010 +100101110011 +001111010001 +100111101011 +101111110100 +110010100111 +000011110110 +101100100011 +111011101110 +000011010110 +011010000011 +011001011010 +001010011101 +000110000101 +011110101110 +010110001001 +101110100101 +100111001110 +011011111101 +110010110100 +101010010010 +011110110000 +001100110110 +111001000101 +110000001100 +011010011011 +011111010110 +101010011110 +101100010001 +001110101001 +101101010110 +111110110110 +000000101000 +001111000001 +010010001111 +100011100010 +011111110010 +000010010001 +011100000000 +001001111001 +100101101010 +101000101101 +111010011100 +101001101000 +101100110100 +100111000011 +111011100011 +101100010110 +010010101110 +011010010011 +111001011100 +101100010010 +101000110111 +101011010001 +111000110100 +110000101001 +000010101010 +001000110000 +010110010011 +110110100111 +111110000000 +111001100101 +101101110011 +100001111000 +100010011001 +111101000101 +000101010101 +010110111011 +111111111111 +001100000000 +111110001111 +110001001011 +010110110000 +110110101111 +110001101101 +011111101001 +011101100101 +111101001100 +110001101000 +110001011100 +101100011100 +101110110101 +000110110011 +111110111110 +011111010000 +000111010100 +101110001000 +101111100110 +000101001011 +111101111011 +001100100110 +011110100010 +010111011001 +110110110011 +000100100101 +001101011111 +011010001010 +010000111110 +100010111011 +101000100101 +111111101111 +111111111110 +110111100111 +001011110001 +001101000010 +010111010011 +101101101110 +100110001011 +111100001111 +101010011010 +000110111111 +011110000100 +111100110011 +111110111101 +011001101111 +110110011001 +111010001101 +010000001101 +100001111101 +100101111111 +100111110111 +110001000001 +110111001101 +011001110100 +010001110101 +100010111110 +010010010010 +000010111101 +101001101100 +100011111100 +110010111010 +100101011011 +110110101011 +101101010000 +011110100011 +101100111111 +110001100001 +110100111010 +011000100011 +011000100010 +011111101111 +101000010110 +000101000010 +001000100001 +111101110010 +000111000001 +101000111000 +100110100011 +001001001111 +110101011010 +101011101101 +100011000110 +100100111000 +001111001111 +010100010100 +000100100100 +010100101011 +010001100000 +011010110111 +111110111000 +110100101001 +010100011000 +110110101110 +010000101001 +000111001010 +001001100111 +110000110110 +011000101010 +000011110100 +111110010000 +010000101111 +100111010101 +110110110000 +110100101110 +111000110010 +011110001100 +000001100100 +111110000111 +001000011001 \ No newline at end of file