add stuff form last year (gave up quickly)

2023/01/index.ts

@@ -0,0 +1,70 @@
+const args = Bun.argv.slice(2)
+
+if(args.length !== 1) {
+    console.error('Please, provide an input file');
+    process.exit(1);
+}
+
+const filename = args[0];
+
+
+const input = Bun.file(filename)
+const text = await input.text()
+
+const start = new Date();
+const result = text.split('\n').map(e => e.trim()).map(line => {
+    if(!line) return;
+
+    const match = matchOverlap(line, /(?:[0-9]|one|two|three|four|five|six|seven|eight|nine)/gi) ?? []
+    console.log(match)
+    const [leftmost, rightmost] = [match[0] ?? 0, match.slice(-1)[0] ?? 0];
+
+    console.log(line, leftmost, rightmost, toNum(leftmost), toNum(rightmost))
+
+    return toNum(leftmost) * 10 + toNum(rightmost);
+}).reduce((a = 0, b = 0) => a + b, 0)
+const end = new Date();
+console.log(result)
+console.log(end - start);
+
+function toNum(n: number | string): number {
+    if(typeof n == 'number') return n;
+    else {
+        switch(n.toLowerCase()) {
+            case 'one':
+                return 1;
+            case 'two':
+                return 2;
+            case 'three':
+                return 3;
+            case 'four':
+                return 4;
+            case 'five':
+                return 5;
+            case 'six':
+                return 6;
+            case 'seven':
+                return 7;
+            case 'eight':
+                return 8;
+            case 'nine':
+                return 9;
+            default:
+                return parseInt(n)
+        }
+    }
+}
+
+function matchOverlap(input, re) {
+    var r = [], m;
+    // Prevent infinite loops
+    if (!re.global) re = new RegExp(
+        re.source, (re+'').split('/').pop() + 'g'
+    );
+    while (m = re.exec(input)) {
+        re.lastIndex -= m[0].length - 1;
+        r.push(m[0]);
+    }
+    return r;
+}
+