Solutions for day ten

10/code.js

@@ -0,0 +1,63 @@
+const fs = require('fs');
+const inputArray = fs.readFileSync('input.txt').toString().split("\n");
+
+const chunks = new Map();
+chunks.set("(", ")");
+chunks.set("{", "}");
+chunks.set("[", "]");
+chunks.set("<", ">");
+
+const scores = new Map();
+scores.set(")", 3);
+scores.set("}", 1197);
+scores.set("]", 57);
+scores.set(">", 25137);
+
+const completeScores = new Map();
+completeScores.set("(", 1);
+completeScores.set("{", 3);
+completeScores.set("[", 2);
+completeScores.set("<", 4);
+
+function simplify(line) {
+  const length = line.length;
+  for (let x = 0; x < length; x++) {
+    for (let i = 0; i < length; i++) {
+      if (line[i+1] && chunks.get(line[i]) === line[i+1]) {
+        line = line.substring(0,i) + line.substring(i+2);
+      }
+    }
+  }
+
+  for (let i = 0; i < length; i++) {
+    if (line[i+1] && chunks.has(line[i]) && !chunks.has(line[i+1])) {
+      return line[i+1];
+    }
+  }
+
+  return line;
+}
+
+let score = 0;
+let completeScoreArray = [];
+
+for (const line of inputArray) {
+  const simplifiedLine = simplify(line);
+  if (simplifiedLine.length === 1) {
+    score += scores.get(simplifiedLine);
+  } else {
+    let lineScore = 0;
+    for (let i = simplifiedLine.length - 1; i >= 0; i--) {
+      lineScore = (lineScore * 5) + completeScores.get(simplifiedLine[i]);
+    }
+    completeScoreArray.push(lineScore);
+  }
+}
+
+// Part one
+console.log(score);
+
+// Part two
+console.log(completeScoreArray.sort((a,b) => b - a)[Math.floor(completeScoreArray.length / 2)]);
+
+

10/input.txt

@@ -0,0 +1,98 @@
+{[<({(<(<{((<(()())[()<>]>({[][]}{<>{}}))[[({}[]){()<>}]<{{}<>}(<><>)>]){[{{<>()}[{}<>]}({()[]}([]))]{{[(
+<{<({([{{<[[{({})({}<>)}{<<><>><<>())}](<<[]()>(<>{})>[[()()]{{}{}}])]{{[[()<>](()[])]}[<(()
+{(({<[[{({[<<({}<>)<{}[]>>>{(<()[]>[[][]])<<{}()>((){})>}]})}{{<{({({}<>){<>}}<({}())>)}<(({[]()}
+[((([{({[{[<<((){})[[]()]><([]){()()}>><{[(){}]>{(<>{}){(){}}}>]}{<<{[<>()]}((<>[]){[]()})>([[<>{}]{(
+<{[<[(<[[{{{({()()}[<>[]])<[<>{}][[]()]]}}([((()())(<>())){{()<>}[<>{}]}]{[[<>[]]{[]<>}]([{}()](()<>))})}((
+<{(<(<[<<<{<([{}()]({}()))[({}())]>[((()())({}<>))(<[]()>[(){}])]}(({<(){}>}<[{}()][()()]>)
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+[[<([{{<[[<<<<[]<>>[[]<>]>[([]()}[{}[]]]>><(<[<>[]]{[]<>}><[()][<>{}]>)[[([]<>)<()[]>][[{}<>]({}{})
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