2020 day 4

.gitignore

@@ -2,3 +2,4 @@ build
 frames
 .DS_Store
 .vscode
+.replit

2020/04/part1.js

@@ -0,0 +1,18 @@
+const fs = require('fs');
+
+const data = fs.readFileSync('input.txt', 'utf-8');
+const passports = data.split('\n\n').map(p=>p.split(/[\n\s]/g).map(e=>e.split(":")));
+// requried fields
+const req = ['ecl', 'eyr', 'hcl', 'byr', 'iyr', 'pid', 'hgt'];
+
+let validamt = 0
+passports.forEach(passport=>{
+  for(let i = 0; i < req.length; i++){
+    if(!passport.find(entry => entry[0] == req[i])){
+      return
+    }
+  }
+  validamt++
+});
+
+console.log(validamt)

2020/04/part2.js

@@ -0,0 +1,41 @@
+const fs = require('fs');
+
+const data = fs.readFileSync('input.txt', 'utf-8');
+const passports = data.split('\n\n').map(p=>p.split(/[\n\s]/g).map(e=>e.split(":")));
+
+// requried fields
+const req = [
+  ["byr", (v => !(v.length != 4 || v<1920 || v>2002))],
+  ["iyr", (v => !(v.length != 4 || v<2010 || v>2020))],
+  ["eyr", (v => !(v.length != 4 || v<2020 || v>2030))],
+  ["hgt", (v => {
+    n = parseInt(v)
+    if (v.endsWith('cm')){
+      if (n<150 || n>193) {return false}
+    } else if ( v.endsWith('in')) {
+      if (n<59 || n>76) {return false}
+    } else {
+      return false
+    }
+    return true
+  })],
+  ["hcl", (v => !!v.match(/^#[0-9a-f]{6}/))],
+  ["ecl", (v => !!['amb','blu','brn','gry','grn','hzl','oth'].find(e => e==v))],
+  ["pid", (v => !!v.match(/^[0-9]{9}$/))]
+];
+
+let validamt = 0
+passports.forEach(passport=>{
+  for(let i = 0; i < req.length; i++){
+    result = passport.find(entry => entry[0] == req[i][0])
+    if(!result) {
+      return
+    }
+    if(!req[i][1](result[1])){
+      return
+    }
+  }
+  validamt++
+});
+
+console.log(validamt)

README.md

@@ -44,6 +44,7 @@ if (advent) {
 1. [:star: :star:](https://adventofcode.com/2020/day/1 "see puzzle")
 2. [:star: :star:](https://adventofcode.com/2020/day/2 "see puzzle")
 3. [:star: :star:](https://adventofcode.com/2020/day/3 "see puzzle")
+4. [:star: :star:](https://adventofcode.com/2020/day/4 "see puzzle")
 
 ## Languages Used
 * Python