2020 day 5 and 6

2020/06/part1.js

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+const fs = require('fs');
+
+const data = fs.readFileSync('test.txt', 'utf-8');
+const groups = data.split('\n\n');
+
+let sum = 0
+for (let g = 0; g<groups.length; g++){
+  let group = groups[g]
+  // ignore spaces and new lines; we don't care about that
+  group = group.replace(/[ \n]/gm, "")
+
+  // list of seen chars
+  let chars = []
+  for (let i = 0; i < group.length; i++) {
+    // if not already seen, add to list of seen chars
+    if (!chars.find(char => char == group[i])) { chars.push(group[i]) }
+  }
+  // keep a sum for our puzzle answer
+  sum += chars.length
+}
+console.log(sum)

2020/06/part2.js

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+const fs = require('fs');
+
+const data = fs.readFileSync('input.txt', 'utf-8');
+const groups = data.split('\n\n');
+
+let sum = 0
+for (let g = 0; g<groups.length; g++){
+  // list of people in group
+  let group = groups[g].split('\n')
+  // first person
+  let first = group[0]
+
+  // for each of the first person's answers
+  for (let answer = 0; answer < first.length; answer++) {
+    // if the total amount of that answer in the group is equal to the amount of people in the group, then everyone in the group answered that question
+    if (group.length == [...groups[g].matchAll(first[answer])].length) {
+      sum++
+    }
+  }
+}
+console.log(sum)