finish day 2 part 2

day2.jai

@@ -0,0 +1,66 @@
+sample :: "11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862,565653-565659,824824821-824824827,2121212118-2121212124";
+
+// sample :: "11-22";
+
+Chunk :: struct {
+    chunks: [..]string;
+    original: string;
+}
+
+solve_second :: (input: string, enable_debug_logging := false) {
+    duplicate_sum := 0;
+    int_sb: String_Builder;
+    for range: split(input, ",") {
+        if enable_debug_logging print("%\n", range);
+        found, left_str, right_str := split_from_left(range, #char "-");
+        assert(found);
+        left := parse_int(*left_str);
+        right := parse_int(*right_str);
+        for i: left..right {
+            print_to_builder(*int_sb, "%", i);
+            i_str := builder_to_string(*int_sb);
+            for split_into_even_chunks(i_str) {
+                if all_equal(array_view(it.chunks, 0)) {
+                    if enable_debug_logging print_vars(it);
+                    duplicate_sum += i;
+                    break;
+                }
+            }
+        }
+    }
+    print_vars(duplicate_sum);
+}
+
+main :: () {
+    content := read_entire_file("day2.input");
+    solve_second(content);
+}
+
+split_into_even_chunks :: (s: string) -> [..]Chunk {
+    result: [..]Chunk;
+    for chunk_len: 1..s.count / 2 {
+        if s.count % chunk_len != 0 continue;
+
+        chunks := Chunk.{original=s};
+        num_chunks := s.count / chunk_len;
+        chunk_i := 0;
+        for chunk_i: 0..num_chunks - 1 {
+            array_add(*chunks.chunks, string.{data=s.data + (chunk_i * chunk_len), count = chunk_len});
+        }
+        array_add(*result, chunks);
+    }
+
+    return result;
+}
+
+all_equal :: (strs: []string) -> bool {
+    for i: 0..strs.count - 2 {
+        if strs[i] != strs[i + 1] return false;
+    }
+    return true;
+}
+
+#import "Basic";
+#import "File";
+#import "String";
+#import "Print_Vars";