Day 6

d06/main.odin

@@ -0,0 +1,79 @@
+package main
+
+import "core:math"
+import "core:slice"
+import "core:strconv"
+import "core:strings"
+import "core:bytes"
+import "core:fmt"
+import "core:os"
+
+import "../util"
+
+part_1 :: proc(lines: []string) {
+    result: = 0
+
+    batches := make([dynamic]map[rune]bool) 
+    batch := make(map[rune]bool)
+
+    for line, idx in lines {
+        if len(line) == 0 {
+            append(&batches, batch)
+            batch = make(map[rune]bool)
+        }
+
+        for letter in line {
+            batch[letter] = true
+        }
+    }
+
+    for answers in batches {
+        result += len(answers)
+    }
+
+    fmt.printfln("Part 1: %d", result)
+}
+
+Batch :: struct {
+    amount: int,
+    answers: map[rune]int
+}
+
+part_2 :: proc(lines: []string) {
+    result: = 0
+
+    batches := make([dynamic]Batch) 
+    batch := Batch{}
+
+    for line, idx in lines {
+        if len(line) == 0 {
+            append(&batches, batch)
+            batch = Batch{} 
+        } else {
+            for letter in line {
+                batch.answers[letter] += 1
+            }
+            batch.amount += 1
+        }
+    }
+
+    for batch in batches {
+        for _, num_answers in batch.answers {
+            if batch.amount == num_answers do result += 1
+        }
+    }
+
+    fmt.printfln("Part 2: %d", result)
+}
+
+main :: proc() {
+    context.allocator = context.temp_allocator
+    defer free_all(context.temp_allocator)
+
+    INPUT :: #load("input.txt", string)
+    lines := strings.split(INPUT, "\n")
+    lines = lines[:len(lines)-1]
+
+    part_1(lines)
+    part_2(lines)
+}