day six part two

06/code.js

@@ -21,7 +21,7 @@ let total = 0;
 const problems = [];
 for (const row of usedArray) {
   const contents = row.trim().split(/\s+/);
-  console.log(contents);
+
   for (let i = 0; i < contents.length; i++) {
     const element = contents[i];
     if (!problems[i]) {
@@ -52,12 +52,84 @@ console.log(total);
 // Part Two
 
 console.time("part2");
-for (const element of usedArray) {
-  const contents = element.split(" ");
 
+let total2 = 0;
+
+let newInput = JSON.parse(JSON.stringify(usedArray));
+for (let rowIndex = 0; rowIndex < newInput.length; rowIndex++) {
+  const row = newInput[rowIndex];
+  newInput[rowIndex] = row.split("");
+}
+
+const problemStarts = [];
+const operatorRowArray = newInput[usedArray.length - 1];
+for (let i = 0; i < operatorRowArray.length; i++) {
+  if (["*", "+"].includes(operatorRowArray[i])) {
+    problemStarts.push(i);
+  }
+}
+
+for (let rowIndex = 0; rowIndex < usedArray.length; rowIndex++) {
+  const row = usedArray[rowIndex];
+  for (let i = 0; i < row.length; i++) {
+    const char = row[i];
+    if (char === " " && !problemStarts.includes(i + 1)) {
+      newInput[rowIndex][i] = '#';
+    }
+  }
+}
+
+for (let rowIndex = 0; rowIndex < newInput.length; rowIndex++) {
+  const row = newInput[rowIndex];
+  newInput[rowIndex] = row.join("");
+}
+
+const problems2 = [];
+for (const row of newInput) {
+  const contents = row.trim().split(/\s+/);
+  for (let i = 0; i < contents.length; i++) {
+    const element = contents[i];
+    if (!problems2[i]) {
+      problems2[i] = [];
+    }
+    problems2[i].push(element);
+  }
+}
+
+let problemsVertical = [];
+for (let i = 0; i < problems2.length; i++) {
+  const problem = problems2[i];
+  let vertProblem = [];
+  for (let j = 0; j < problem.length - 1; j++) {
+    const newElement =
+      (problem[0] && problem[0][j] && problem[0][j] !== '#' ? problem[0][j] : '') +
+      (problem[1] && problem[1][j] && problem[1][j] !== '#' ? problem[1][j] : '') +
+      (problem[2] && problem[2][j] && problem[2][j] !== '#' ? problem[2][j] : '') +
+      (problem[3] && problem[3][j] && problem[3][j] !== '#' ? problem[3][j] : '') +
+      (problem[4] && problem[4][j] && problem[4][j] !== '#' ? problem[4][j] : '');
+    if (Number.parseInt(newElement)) {
+      vertProblem.push(Number.parseInt(newElement));
+    }
+  }
+  vertProblem.push(problem[problem.length - 1]);
+  problemsVertical.push(vertProblem);
+}
+
+for (let problem of problemsVertical) {
+  problem = problem.reverse();
+  const operator = problem.shift();
+  let answer = operator.includes('+') ? 0 : 1;
+  for (const number of problem) {
+    if (operator.includes('+')) {
+      answer += Number.parseInt(number);
+    } else {
+      answer *= Number.parseInt(number);
+    }
+  }
+  total2 += answer;
 }
 
 console.timeEnd("part2");
-console.log();
+console.log(total2);
 
 // functions