Big update: Adding all advent of codes to same repo

AdventOfCode2021/day2/day2.go

@@ -0,0 +1,44 @@
+package day2
+
+import (
+	"bytes"
+	"strconv"
+)
+
+func Run(dat []byte) (int, int) {
+  
+  dat = dat[:len(dat) - 1]
+    
+  lines := bytes.Split(dat, []byte("\n"))
+
+  vertical := 0
+  horizontal := 0
+
+  part2vertical := 0
+  part2horizontal := 0
+  aim := 0
+
+  for _, value := range lines {
+    
+    splitInstruction := bytes.Split(value, []byte(" "))
+
+    direction := string(splitInstruction[0])
+    scale, _ := strconv.Atoi(string(splitInstruction[1]))
+    
+    if direction == "forward" {
+      horizontal += scale
+      part2horizontal += scale
+      part2vertical += aim * scale
+    } else if direction == "up" {
+      vertical -= scale
+      aim -= scale
+    } else if direction == "down" {
+      vertical += scale
+      aim += scale
+    }
+
+  }
+
+  return vertical * horizontal, part2vertical * part2horizontal
+
+}