From 1615406a28d607f0340df55f513338a326e0998f Mon Sep 17 00:00:00 2001
From: Anna Wiggins <annabunches@gmail.com>
Date: Tue, 4 Dec 2018 03:34:23 -0500
Subject: [PATCH] Day 4 solution, part 2.

---
 2018/day04-2.go | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 2018/day04-2.go

diff --git a/2018/day04-2.go b/2018/day04-2.go
new file mode 100644
index 0000000..6856867
--- /dev/null
+++ b/2018/day04-2.go
@@ -0,0 +1,37 @@
+package main
+
+import (
+	"fmt"
+
+	"internal/guards"
+	"internal/util"
+)
+
+func main() {
+	data := util.ReadInput()
+	shifts := guards.ParseInput(data)
+	guards := guards.BuildGuards(shifts)
+
+	sleepiest, sleepiestMinute := FindSleepiestData(guards)
+
+	fmt.Printf("Sleepiest Guard: %d\n", sleepiest.ID)
+	fmt.Printf("Sleepiest Minute: %d\n", sleepiestMinute)
+	fmt.Printf("Result: %d\n", sleepiest.ID*sleepiestMinute)
+}
+
+func FindSleepiestData(data map[int]*guards.Guard) (*guards.Guard, int) {
+	var sleepiest *guards.Guard
+	var minute, value int
+
+	for _, guard := range data {
+		for i := 0; i < 60; i++ {
+			if guard.Sleep[i] > value {
+				sleepiest = guard
+				minute = i
+				value = guard.Sleep[i]
+			}
+		}
+	}
+
+	return sleepiest, minute
+}