day 7 yay

Author: StrangeGirlMurph

AdventOfCode/aoc-2025-deno/day07.ts

@@ -0,0 +1,54 @@
+const input = Deno.readTextFileSync("./day07.txt").trim().split("\n").map(v => v.split(""))
+
+let count = 0
+
+const manifolds = deepCopy(input)
+manifolds[0][manifolds[0].indexOf("S")] = "|"
+
+for (let row = 1; row < manifolds.length; row++) {
+ const above = manifolds[row-1]
+
+ for (const [column, value] of manifolds[row].entries()) {
+ if (above[column] == "|") {
+ if (value == ".") {
+ manifolds[row][column] = "|"
+ } else if (value == "^") {
+ count++
+ manifolds[row][column-1] = "|"
+ manifolds[row][column+1] = "|"
+ }
+ }
+ }
+}
+
+console.log(count)
+
+const quantumManifolds: (number | "^")[][] = deepCopy(input).map(l => l.map(v => v == "." ? 0: "^"))
+quantumManifolds[0][input[0].indexOf("S")] = 1
+
+for (let row = 1; row < quantumManifolds.length; row++) {
+ const above = quantumManifolds[row-1] 
+
+ for (const [column, value] of quantumManifolds[row].entries()) {
+ const valueAbove = above[column]
+
+ if (typeof valueAbove == "number") {
+ if (value == "^") {
+ (quantumManifolds[row][column-1] as number) += valueAbove;
+ (quantumManifolds[row][column+1] as number) += valueAbove
+ } else {
+ (quantumManifolds[row][column] as number) += valueAbove
+ }
+ }
+ }
+}
+
+const paths = (quantumManifolds.at(-1)! as number[]).reduce((p,c) => p+c,0)
+
+console.log(paths)
+
+function deepCopy(a: string[][]): string[][] {
+ const b: string[][] = []
+ a.forEach(l => {b.push([...l])})
+ return b
+}