day 5

2025/6.2.ts

@@ -0,0 +1,63 @@
+import assert from 'node:assert';
+import fs from 'node:fs';
+
+
+const file = fs.readFileSync('./2025/inputs/6').toString();
+let count = 0
+class Operation {
+    public numbers: number[]
+    public operation?: string
+    constructor() {
+        this.numbers = []
+    }
+}
+const operations: Operation[] = []
+const reversed: string[] = []
+for (const line of file.split("\n")) {
+    reversed.push(line.split('').toReversed().join(""))
+}
+
+let currentOperation = new Operation()
+operations.push(currentOperation)
+reversed[0].split('').forEach((_, lineN) => {
+    let currentNumber: string[] = []
+    let s = ""
+    reversed.forEach((_, colN) => {
+        s = reversed[colN][lineN]
+
+        if (s == " ") {
+            return
+        }
+
+        const n = Number(s)
+        if (isNaN(n)) {
+            return
+        }
+        currentNumber.push(s)
+    })
+
+    if (currentNumber.length > 0) {
+        currentOperation.numbers.push(Number(currentNumber.join("")))
+    }
+
+    currentNumber = []
+
+    if (s == "*" || s == "+") {
+        currentOperation.operation = s
+        if (currentNumber.length > 0) {
+            currentOperation.numbers.push(Number(currentNumber.join("")))
+        }
+
+        currentNumber = []
+        currentOperation = new Operation()
+        operations.push(currentOperation)
+    }
+
+})
+
+operations.pop()
+const result = operations.reduce((acc, curr) => {
+    return acc + eval(curr.numbers.join(curr.operation))
+}, 0)
+
+console.log(result)