From b9e8c4920ac95198c800955fe23bf646e79ed703 Mon Sep 17 00:00:00 2001
From: hrbrmstr <bob@rud.is>
Date: Mon, 7 Dec 2020 12:23:03 -0500
Subject: [PATCH] Day 6 js

---
 R/.Rproj.user/CBF2E10B/sources/prop/INDEX |  4 +++
 R/.Rproj.user/shared/notebooks/paths      |  1 +
 js/06.js                                  | 46 +++++++++++++++++++++++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 js/06.js

diff --git a/R/.Rproj.user/CBF2E10B/sources/prop/INDEX b/R/.Rproj.user/CBF2E10B/sources/prop/INDEX
index edb2017..e56de52 100644
--- a/R/.Rproj.user/CBF2E10B/sources/prop/INDEX
+++ b/R/.Rproj.user/CBF2E10B/sources/prop/INDEX
@@ -6,6 +6,7 @@
 ~%2FDevelopment%2F2020-code-advent%2FR%2F05.R="3147CB9C"
 ~%2FDevelopment%2F2020-code-advent%2FR%2F05.py="C22F3766"
 ~%2FDevelopment%2F2020-code-advent%2FR%2F06.R="2E0DCDD0"
+~%2FDevelopment%2F2020-code-advent%2FR%2F06.js="6AE95C9F"
 ~%2FDevelopment%2F2020-code-advent%2FR%2F06.py="A53BEE38"
 ~%2FDevelopment%2F2020-code-advent%2FREADME.md="87542FC2"
 ~%2FDevelopment%2F2020-code-advent%2FSwift%2F2020-code-advent.playground%2FSources%2F05-01.swift="A5C6F3F2"
@@ -13,4 +14,7 @@
 ~%2FDevelopment%2F2020-code-advent%2Finput%2F06-01.txt="488B7FA9"
 ~%2FDevelopment%2F2020-code-advent%2Fjs%2F01.js="BCBA9F87"
 ~%2FDevelopment%2F2020-code-advent%2Fjs%2F02.js="823FD9BF"
+~%2FDevelopment%2F2020-code-advent%2Fjs%2F03.js="8D76FAB7"
+~%2FDevelopment%2F2020-code-advent%2Fjs%2F04.js="48608747"
 ~%2FDevelopment%2F2020-code-advent%2Fjs%2F05.js="28BC66DE"
+~%2FDevelopment%2F2020-code-advent%2Fjs%2F06.js="60A0ABC4"
diff --git a/R/.Rproj.user/shared/notebooks/paths b/R/.Rproj.user/shared/notebooks/paths
index 6324751..148cf72 100644
--- a/R/.Rproj.user/shared/notebooks/paths
+++ b/R/.Rproj.user/shared/notebooks/paths
@@ -9,6 +9,7 @@
 /Users/hrbrmstr/Development/2020-code-advent/R/05.R="A949D345"
 /Users/hrbrmstr/Development/2020-code-advent/R/05.py="89270E3A"
 /Users/hrbrmstr/Development/2020-code-advent/R/06.R="E6CEEABC"
+/Users/hrbrmstr/Development/2020-code-advent/R/06.js="14D95124"
 /Users/hrbrmstr/Development/2020-code-advent/R/06.py="6D546EAC"
 /Users/hrbrmstr/Development/2020-code-advent/README.md="74DC8DCF"
 /Users/hrbrmstr/Development/2020-code-advent/Swift/2020-code-advent.playground/Sources/05-01.swift="8E24EF14"
diff --git a/js/06.js b/js/06.js
new file mode 100644
index 0000000..9ab599c
--- /dev/null
+++ b/js/06.js
@@ -0,0 +1,46 @@
+var fs = require("fs")
+
+Array.prototype.prepend = function() {
+  this.unshift(arguments["0"])
+  return(this)
+}
+
+// 06-01
+
+res = input = fs.readFileSync("../input/06-01.txt", "utf-8")
+  .split("\n")
+  .prepend("")
+  .reduce((recs, line) => {
+    (line == "") ? recs.push([line]) : recs[recs.length - 1].push(line)
+    return(recs)
+  }, [])
+  .filter((x) => x.length > 1)
+  .map((x) => x.filter((y) => y != "")
+               .map((y) => y.split(""))
+               .flat()
+  )
+  .map((x) => (new Set(x)).size)
+  .reduce((a, b) => a + b)
+
+console.log(res)
+
+// 06-02
+
+res = input = fs.readFileSync("../input/06-01.txt", "utf-8")
+  .split("\n")
+  .prepend("")
+  .reduce((recs, line) => {
+    (line == "") ? recs.push([line]) : recs[recs.length - 1].push(line)
+    return(recs)
+  }, [])
+  .filter((x) => x.length > 1)
+  .map((x) => x.filter((y) => y != "")
+               .map((y) => y.split(""))
+  )
+  .map((x) => {
+    map = x.flat().reduce((acc, e) => acc.set(e, (acc.get(e) || 0) + 1), new Map())
+    return([...map.values()].filter((v) => v == x.length).length)
+  })
+  .reduce((a, b) => a + b)
+
+console.log(res)