Add day 6 part 1 solution

.gitignore

@@ -1 +1,2 @@
-output
+output
+node_modules

js/day6.js

@@ -0,0 +1,29 @@
+const { readFromFile, printSolution } = require('./utility')
+const flags = require('flags')
+
+const solve = (sample) => {
+    const inputs = readFromFile(6, sample)
+
+    let arr = inputs.split(",").map(Number)
+    console.log(arr)
+    for (let i = 0; i < 256; i++) {
+        const len = arr.length
+        for (let j = 0; j < len; j++) {
+            let current = arr[j] - 1
+
+            if (current < 0) {
+                arr.push(8)
+                current = 6
+            }
+            arr[j] = current
+        }
+    }
+
+    printSolution(arr.length)
+}
+
+flags.defineBoolean("sample", false, "run with sample")
+flags.defineBoolean("s", false, "run with sample")
+flags.parse()
+
+solve(flags.get("sample") || flags.get("s"))

js/inputs/day6.txt

@@ -0,0 +1 @@
+2,4,1,5,1,3,1,1,5,2,2,5,4,2,1,2,5,3,2,4,1,3,5,3,1,3,1,3,5,4,1,1,1,1,5,1,2,5,5,5,2,3,4,1,1,1,2,1,4,1,3,2,1,4,3,1,4,1,5,4,5,1,4,1,2,2,3,1,1,1,2,5,1,1,1,2,1,1,2,2,1,4,3,3,1,1,1,2,1,2,5,4,1,4,3,1,5,5,1,3,1,5,1,5,2,4,5,1,2,1,1,5,4,1,1,4,5,3,1,4,5,1,3,2,2,1,1,1,4,5,2,2,5,1,4,5,2,1,1,5,3,1,1,1,3,1,2,3,3,1,4,3,1,2,3,1,4,2,1,2,5,4,2,5,4,1,1,2,1,2,4,3,3,1,1,5,1,1,1,1,1,3,1,4,1,4,1,2,3,5,1,2,5,4,5,4,1,3,1,4,3,1,2,2,2,1,5,1,1,1,3,2,1,3,5,2,1,1,4,4,3,5,3,5,1,4,3,1,3,5,1,3,4,1,2,5,2,1,5,4,3,4,1,3,3,5,1,1,3,5,3,3,4,3,5,5,1,4,1,1,3,5,5,1,5,4,4,1,3,1,1,1,1,3,2,1,2,3,1,5,1,1,1,4,3,1,1,1,1,1,1,1,1,1,2,1,1,2,5,3

js/inputs/day6sample.txt

@@ -0,0 +1 @@
+3,4,3,1,2

js/template.js

@@ -1,12 +1,13 @@
 const { readFromFile, printSolution } = require('./utility')
 const flags = require('flags')
 
-const solve = () => {
+const solve = (sample) => {
     const inputs = readFromFile(4, sample)
     printSolution(inputs)
 }
 
 flags.defineBoolean("sample", false, "run with sample")
+flags.defineBoolean("s", false, "run with sample")
 flags.parse()
 
-solve(flags.get("sample"))
+solve(flags.get("sample") || flags.get("s"))