initialise

3/main.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"regexp"
+	"strconv"
+	// "strings"
+)
+
+func main() {
+  filePath := "input"
+  file, err := os.Open(filePath)
+  if err != nil {
+    panic(err)
+  }
+  result := 0
+  defer file.Close()
+  scanner := bufio.NewScanner(file)
+  r := regexp.MustCompile(`mul\([0-9]{1,3},[0-9]{1,3}\)|do\(\)|don't\(\)`)
+  numbers := regexp.MustCompile(`[0-9]{1,3}`)
+  enabled := true
+  for scanner.Scan() {
+    line := scanner.Text()
+    matches := r.FindAllString(line, -1)
+    fmt.Println(matches)
+    for i := range matches {
+      if matches[i] == "do()" {
+        fmt.Println("Do")
+        enabled = true
+      } else if matches[i] == "don't()" {
+        fmt.Println("Don't")
+        enabled = false
+      } else {
+        if enabled {
+          fmt.Println(matches[i], " enabled")
+          multipliers := numbers.FindAllString(matches[i], -1)
+          firstNumber, _ := strconv.Atoi(multipliers[0])
+          secondNumber, _ := strconv.Atoi(multipliers[1])
+          result = result + firstNumber * secondNumber
+        } else {
+          fmt.Println(matches[i], " disabled")
+        }
+      }
+//      multipliers := numbers.FindAllString(matches[i], -1)
+////      fmt.Println(multipliers)
+////      fmt.Printf("%T\n", multipliers)
+////      fmt.Println(len(multipliers))
+////      fmt.Println(multipliers[0])
+//      firstNumber, _ := strconv.Atoi(multipliers[0])
+//      secondNumber, _ := strconv.Atoi(multipliers[1])
+//      result = result + firstNumber * secondNumber
+////      for j := range multipliers {
+////        multipliersSplit := strings.Fields(multipliers[j])
+////        multiplierInt1, _ := strconv.Atoi(multipliersSplit[0])
+////        multiplierInt2, _ := strconv.Atoi(multipliersSplit[1])
+////        result = result + multiplierInt1 * multiplierInt2
+////      }
+    }
+  }
+  fmt.Println(result)
+}