day7

1 files changed, 48 insertions, 0 deletions

diff --git a/day7/day7-1.js b/day7/day7-1.js
new file mode 100644
index 0000000..a28222a
--- /dev/null
+++ b/day7/day7-1.js
@@ -0,0 +1,48 @@
+const data = require('./data')
+
+let arrays = data
+  .replace(/\n/g,"")
+  .replace(/bag(s)?/g,"")
+  .split('.')
+  .slice(0,-1)
+  .map(s => s.split(' contain '))
+  .map(s => [s[0].trim(), s.slice(1).map(x => x.trim().split(' , '))[0]])
+  .map(s => [s[0], s[1].map(x => {
+    if (x !== 'no other') {
+      return[x.replace(/\d+/g, '').trim(), parseInt(x.match(/[0-9]+/g))]
+    } else {
+      return null
+    }})])
+  .map(s => [s[0], s[1].filter(x => x !== null)])
+
+const keys = arrays.map(s => s[0])
+const check = (arr, k) => (
+  arr.find(a => {
+    let c = false
+    a[1].forEach(x => {
+      if (x[0] !== 'shiny gold' && k.indexOf(x[0]) > -1) { c = true }
+    })
+    return c
+  })
+)
+
+while (
+  check(arrays, keys)
+) {
+  arrays = arrays.map(s => [s[0], s[1].map(x => {
+    if (keys.indexOf(x[0]) > -1 && x[0] !== 'shiny gold') {
+      return arrays.find(a => a[0] == x[0])[1].map(y => [y[0], y[1] * x[1]])
+    } else {
+      return [x]
+    }
+  })])
+  arrays = arrays.map(a => [a[0], a[1].flat(1)])
+}
+
+let res = 0
+arrays.forEach(a => {
+  if (a[1] && a[1].length) { res += 1 }
+})
+
+console.log('result: ', res)
+