22 and make

Makefile

@@ -0,0 +1,18 @@
+outdir="./build"
+
+all: 18 19 20 21 22
+
+18:
+	go build -o build/18
+
+19:
+	go build -o build/19
+
+20:
+	go build -o build/20
+
+21:
+	go build -o build/21
+
+22:
+	go build -o build/22

cmd/22/main.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"sort"
+	"strings"
+)
+
+func main() {
+	//open file
+	fd, err := os.Open("cmd/22/input.txt")
+	if err != nil {
+		panic(err)
+	}
+	defer fd.Close()
+
+	raw, err := io.ReadAll(fd)
+	if err != nil {
+		panic(err)
+	}
+
+	var names sort.StringSlice
+
+	names = strings.Split(strings.TrimSpace(string(raw)), ",")
+	for i, name := range names {
+		n := strings.ReplaceAll(name, "\"", "")
+		names[i] = n
+	}
+
+	//sort file
+	sort.Sort(names)
+
+	//loop through add sum
+	sum := 0
+	for i, name := range names {
+		n := strings.ReplaceAll(name, "\"", "")
+		fmt.Printf("%s\n", n)
+		sum += sumName(n) * (i + 1)
+	}
+
+	fmt.Printf("%s %d\n", names[937], sumName("COLIN"))
+	fmt.Printf("%d\n", sum)
+}
+
+func sumName(s string) int {
+	sum := 0
+	for _, c := range s {
+		sum += int(c - 64)
+	}
+
+	return sum
+}