|
|
@@ -0,0 +1,72 @@
|
|
|
+package main
|
|
|
+
|
|
|
+import (
|
|
|
+ "bufio"
|
|
|
+ "fmt"
|
|
|
+ "log"
|
|
|
+ "os"
|
|
|
+)
|
|
|
+
|
|
|
+func getNumber(char byte) int {
|
|
|
+ switch char {
|
|
|
+ case '2':
|
|
|
+ return 2
|
|
|
+ case '1':
|
|
|
+ return 1
|
|
|
+ case '0':
|
|
|
+ return 0
|
|
|
+ case '-':
|
|
|
+ return -1
|
|
|
+ case '=':
|
|
|
+ return -2
|
|
|
+ }
|
|
|
+
|
|
|
+ return 300
|
|
|
+}
|
|
|
+
|
|
|
+func fromSnafu(text string) int {
|
|
|
+ multiplier := 5
|
|
|
+ modifier := 1
|
|
|
+ end := len(text) - 1
|
|
|
+ result := 0
|
|
|
+
|
|
|
+ for i := end; i >= 0; i-- {
|
|
|
+ n := getNumber(text[i])
|
|
|
+ result += modifier * n
|
|
|
+ modifier *= multiplier
|
|
|
+ }
|
|
|
+
|
|
|
+ return result
|
|
|
+}
|
|
|
+
|
|
|
+func readInput(file *os.File) []int {
|
|
|
+ scanner := bufio.NewScanner(file)
|
|
|
+ var numbers []int
|
|
|
+
|
|
|
+ for scanner.Scan() {
|
|
|
+ line := scanner.Text()
|
|
|
+ if line == "" {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ numbers = append(numbers, fromSnafu(line))
|
|
|
+ }
|
|
|
+
|
|
|
+ return numbers
|
|
|
+}
|
|
|
+
|
|
|
+func main() {
|
|
|
+ if len(os.Args) < 2 {
|
|
|
+ log.Fatal("You need to specify a file!")
|
|
|
+ }
|
|
|
+
|
|
|
+ filePath := os.Args[1]
|
|
|
+ file, err := os.Open(filePath)
|
|
|
+ if err != nil {
|
|
|
+ log.Fatalf("Failed to open %s!\n", filePath)
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ numbers := readInput(file)
|
|
|
+ fmt.Println(numbers)
|
|
|
+}
|
