feat(2023): Day 13 part 1

Author: bbb

typescript/2023/13/example

@@ -0,0 +1,15 @@
+#.##..##.
+..#.##.#.
+##......#
+##......#
+..#.##.#.
+..##..##.
+#.#.##.#.
+
+#...##..#
+#....#..#
+..##..###
+#####.##.
+#####.##.
+..##..###
+#....#..#

typescript/2023/13/main.ts

@@ -0,0 +1,48 @@
+const handlePattern = (pattern: string, part2 = false) => {
+    const rows = pattern.split('\n')
+
+    let cols: string[] = Array(rows[0].length).fill('')
+    for (const row of rows) {
+        for (const [j, char] of [...row].entries()) {
+            cols[j] += char
+        }
+    }
+
+    // Check horizontally
+    for (let i = 1; i < rows.length; i++) {
+        if (rows[i - 1] === rows[i]) {
+            let x = 0
+            while (rows[i-1 - x] === rows[i + x]) {
+                x++
+                if (i-1 - x < 0 || i + x > rows.length -1) {
+                    return i * 100
+                }
+            }
+        }
+    }
+
+    // Check vertically
+    for (let i = 1; i < cols.length; i++) {
+        if (cols[i - 1] === cols[i]) {
+            let x = 0
+            while (cols[i-1 - x] === cols[i + x]) {
+                x++
+                if (i-1 - x < 0 || i + x > cols.length -1) {
+                    return i
+                }
+            }
+        }
+    }
+
+    throw new Error("shouldn't happened...")
+}
+
+const file = Bun.file('input');
+const input = await file.text();
+const patterns = input.trimEnd().split('\n\n')
+
+const total1 = patterns.reduce((acc, curr) => acc + handlePattern(curr), 0)
+console.log(`Result for part 1 is : ${total1}`)
+
+const total2 = 0
+console.log(`Result for part 2 is : ${total2}`)