Initial commit

03/code.js

@@ -0,0 +1,72 @@
+const fs = require('fs');
+
+// const inputArray = fs.readFileSync('sample.txt').toString().split("\n");
+const inputArray = fs.readFileSync('input.txt').toString().split("\n");
+
+// Part One
+
+const lineCount = inputArray.length;
+const realPartNumbers = [];
+
+for (i in inputArray) {
+  let line = inputArray[i];
+  const lineLength = line.length;
+  const possiblePartNumbers = [];
+  const parsedLine = line.split(/\D+/g);
+  for (part of parsedLine) {
+    !!parseInt(part) && possiblePartNumbers.push(parseInt(part));
+  }
+
+  for (part of possiblePartNumbers) {
+    let isRealPart = false;
+    const regex = new RegExp(`(?<!\\d)${part}(?!\\d)`);
+    const startingPosition = line.search(regex);
+    line = line.replace(part, '0'.repeat(part.toString().length)); // dang duplicates
+    const endingPosition = startingPosition + part.toString().length - 1;
+    if (startingPosition > 0 && line[startingPosition - 1] !== ".") {
+      isRealPart = true;
+    }
+    if (endingPosition < lineLength - 1 && line[endingPosition + 1] !== "." && !isRealPart) {
+      isRealPart = true;
+    }
+    if (i > 0  && !isRealPart) {
+      let stringAbove = inputArray[i - 1].substring(startingPosition === 0 ? startingPosition : startingPosition - 1, endingPosition != lineLength - 1 ? endingPosition + 2 : undefined);
+      stringAbove = stringAbove.replaceAll(".", "0");
+      for (char of stringAbove) {
+        if (!parseInt(char) && parseInt(char) !== 0) {
+          isRealPart = true;
+        }
+      };
+    }
+    if (i < lineCount - 1  && !isRealPart) {
+      let stringBelow = inputArray[parseInt(i) + 1].substring(startingPosition === 0 ? startingPosition : startingPosition - 1, endingPosition !== lineLength - 1 ? endingPosition + 2 : undefined);
+      stringBelow = stringBelow.replaceAll(".", "0");
+      for (char of stringBelow) {
+        if (!parseInt(char) && parseInt(char) !== 0) {
+          isRealPart = true;
+        }
+      };
+    }
+
+    if (isRealPart) {
+      realPartNumbers.push(part);
+    }
+  }
+
+}
+
+console.log(realPartNumbers.reduce((a, b) => a + b, 0));
+
+
+// Part Two
+
+for (i in inputArray) {
+  const contents = inputArray[i].split(" ");
+
+}
+
+
+console.log();
+
+// functions
+