fine, I'll put them on github

1/1.go

@@ -0,0 +1,37 @@
+package main
+
+import "os"
+import "fmt"
+import "strings"
+import "strconv"
+
+// go run 1.go <input>
+
+func main() {
+
+	s := strings.Split(os.Args[1], "")
+	checksum := 0
+	checksum2 := 0
+
+	for index, element := range s {
+		pre := index - 1
+		pre2 := (index + (len(s) / 2)) % len(s)
+		if pre == -1 {
+			pre = len(s) - 1
+		}
+
+		fmt.Println(index, element, pre, s[pre])
+
+		if element == s[pre] {
+			i, _ := strconv.Atoi(element)
+			checksum += i
+		}
+		if element == s[pre2] {
+			i, _ := strconv.Atoi(element)
+			checksum2 += i
+		}
+
+	}
+
+	fmt.Println(checksum, checksum2)
+}