Day 5, part 1.

2018/internal/util/input.go

@@ -2,6 +2,8 @@ package util
 
 import (
 	"bufio"
+	"bytes"
+	"io/ioutil"
 	"os"
 )
 
@@ -22,3 +24,14 @@ func ReadInput() []string {
 
 	return lines
 }
+
+// ReadInputS is like ReadInput, but returns a byte array.
+func ReadInputBytes() []byte {
+	rawData, err := ioutil.ReadFile(os.Args[1])
+
+	if err != nil {
+		panic(err)
+	}
+
+	return bytes.TrimRight(rawData, "\n")
+}