2025/2

Signed-off-by: Alix von Schirp <github@avonschirp.bootmedia.de>

src/2025/2/1/index.ts

@@ -0,0 +1,17 @@
+export default async function runner(inputPath: string){
+  const input = (await Bun.file(inputPath).text()).trimEnd();
+
+  let sum = 0;
+
+  input.split(",").forEach(segment => {
+    if(segment.trim() === "") return;
+    const [low, high] = segment.split("-").map(value => parseInt(value));
+    if(low === undefined || high === undefined) return;
+    for(let i = low; i<=high; i++){
+      const stringNum: string = `${i}`;
+      if(stringNum.substring(0, stringNum.length/2) === stringNum.substring(stringNum.length/2)) sum += i;
+    }
+  })
+
+  console.log(sum);
+}

src/2025/2/2/index.ts

@@ -0,0 +1,25 @@
+export default async function runner(inputPath: string){
+  const input = (await Bun.file(inputPath).text()).trimEnd();
+
+  let sum = 0;
+
+  input.split(",").forEach(segment => {
+    if(segment.trim() === "") return;
+    const [low, high] = segment.split("-").map(value => parseInt(value));
+    if(low === undefined || high === undefined) return;
+    for(let i = low; i<=high; i++){
+      const stringNum: string = `${i}`;
+
+      sum += helper(stringNum)
+    }
+  })
+
+  console.log(sum);
+}
+
+function helper(stringNum: string){
+  for(let j = 0; j<stringNum.length/2; j++) {
+      if(stringNum.match(/^(\d+)\1+$/gm)) return parseInt(stringNum);
+  }
+  return 0;
+}