day seven both parts

07/code.js

@@ -0,0 +1,103 @@
+import { readFileSync } from 'node:fs';
+
+let sampleMode = false;
+let usedArray = [];
+
+const sampleArray = readFileSync('sample.txt').toString().split("\n");
+const inputArray = readFileSync('input.txt').toString().split("\n");
+
+if (sampleMode) {
+  usedArray = sampleArray;
+} else {
+  usedArray = inputArray;
+}
+
+// Part One
+
+console.time("part1");
+
+let newInput = JSON.parse(JSON.stringify(usedArray));
+for (let i = 0; i < newInput.length; i++) {
+  newInput[i] = newInput[i].split("");
+}
+
+for (let i = 1; i < newInput.length; i++) {
+  for (let j = 0; j < newInput[i].length; j++) {
+    if ((newInput[i - 1][j] === '|' || newInput[i - 1][j] === 'S') && newInput[i][j] === '.') {
+      newInput[i][j] = '|';
+    }
+    if (newInput[i - 1][j] === '|' && newInput[i][j] === '^') {
+      if (j > 0 && newInput[i][j - 1] === '.') {
+        newInput[i][j - 1] = '|';
+      }
+    }
+    if (newInput[i - 1][j] === '|' && newInput[i][j] === '^') {
+      if (j < newInput[i].length - 1 && newInput[i][j + 1] === '.') {
+        newInput[i][j + 1] = '|';
+      }
+    }
+  }
+}
+
+let splits = 0;
+
+for (let i = 1; i < newInput.length; i++) {
+  for (let j = 0; j < newInput[i].length; j++) {
+    if (newInput[i][j] === '^' && newInput[i - 1][j] === '|') {
+      splits++;
+    }
+  }
+}
+
+console.timeEnd("part1");
+console.log(splits);
+
+
+// Part Two
+
+console.time("part2");
+
+newInput = JSON.parse(JSON.stringify(usedArray));
+for (let i = 0; i < newInput.length; i++) {
+  newInput[i] = newInput[i].split("");
+}
+
+for (let i = 1; i < newInput.length; i++) {
+  for (let j = 0; j < newInput[i].length; j++) {
+    if (newInput[i - 1][j] === 'S') {
+      newInput[i][j] = 1;
+    }
+    if (Number.parseInt(newInput[i - 1][j]) > 0 && Number.parseInt(newInput[i][j]) > 0) {
+      newInput[i][j] = newInput[i][j] + newInput[i - 1][j];
+    }
+    if ((Number.parseInt(newInput[i - 1][j]) > 0) && newInput[i][j] === '.') {
+      newInput[i][j] = newInput[i - 1][j];
+    }
+    if (Number.parseInt(newInput[i - 1][j]) > 0 && newInput[i][j] === '^') {
+      if (j > 0 && newInput[i][j - 1] === '.') {
+        newInput[i][j - 1] = newInput[i - 1][j];
+      } else if (j > 0 && Number.parseInt(newInput[i][j - 1]) > 0) {
+        newInput[i][j - 1] = Number.parseInt(newInput[i][j - 1]) + newInput[i - 1][j];
+      }
+      if (j < newInput[i].length - 1 && newInput[i][j + 1] === '.') {
+        newInput[i][j + 1] = newInput[i - 1][j];
+      } else if (j < newInput[i].length - 1 && Number.parseInt(newInput[i][j + 1]) > 0) {
+        newInput[i][j + 1] = Number.parseInt(newInput[i][j + 1]) + newInput[i - 1][j];
+      }
+    }
+  }
+}
+
+let timelines = 0;
+
+const bottomRow = newInput[newInput.length - 1];
+for (let i = 0; i < bottomRow.length; i++) {
+  if (Number.parseInt(bottomRow[i]) > 0) {
+    timelines += Number.parseInt(bottomRow[i]);
+  }
+}
+
+console.timeEnd("part2");
+console.log(timelines);
+
+// functions