1 files changed, 41 insertions, 0 deletions
diff --git a/day4/day4-2.js b/day4/day4-2.js
new file mode 100644
index 0000000..d9b23b8
--- /dev/null
+++ b/day4/day4-2.js
@@ -0,0 +1,41 @@
+const data = require('./data')
+const rules = (o) => {
+  switch(o[0]) {
+    case 'byr':
+      return parseInt(o[1]) >= 1920 && parseInt(o[1]) <= 2002 ? o[0] : false
+    case 'iyr':
+      return parseInt(o[1]) >= 2010 && parseInt(o[1]) <= 2020 ? o[0] : false
+    case 'eyr':
+      return parseInt(o[1]) >= 2020 && parseInt(o[1]) <= 2030 ? o[0] : false
+    case 'hgt':
+      if (o[1].indexOf('cm') > -1) {
+        const h = parseInt(o[1].replace('cm',''))
+        if (h >= 150 && h <= 193) return o[0]
+      } else if (o[1].indexOf('in') > -1) {
+        const h = parseInt(o[1].replace('in',''))
+        if (h >= 59 && h <= 76) return o[0]
+      }
+      return false
+    case 'hcl':
+      return /#([a-f]|[A-F]|[0-9]){6}\b/.test(o[1]) ? o[0] : false
+    case 'ecl':
+      return ['amb','blu','brn','gry','grn','hzl','oth'].includes(o[1]) ? o[0] : false
+    case 'pid':
+      return /^\d{9}$/.test(o[1]) ? o[0] : false
+    default:
+      return false
+  }
+}
+
+const req = ['byr','iyr','eyr','hgt','hcl','ecl','pid']
+const valid = data
+  .replace(/\n\r/g, "\n")
+  .split(/\n{2,}/g)
+  .map(s => s.replace(/\n/g,"").split(' '))
+  .map(a => a.filter(Boolean))
+  .map(a => a.map(s => s.split(':')))
+  .map(o => req.every(r => o.map(rules).includes(r)))
+  .filter(v => v === true)
+  .length
+
+console.log(valid)