half of day 3

2021/day3/main.go

@@ -1,11 +1,55 @@
 package main
 
-import "fmt"
+import (
+	"bufio"
+	"fmt"
+	"os"
+)
 
+func GetData(s string) []string {
+	var result []string
+	fileReader, err := os.Open(s)
+	if err != nil {
+		return nil
+	}
+	lines := bufio.NewScanner(fileReader)
+	lines.Split(bufio.ScanLines)
+	for lines.Scan() {
+		result = append(result, lines.Text())
+	}
+	return result
+}
 func main() {
 	fmt.Println("GoFast!")
+
 }
 
-func Part1() int {
+func Part1(s []string) int {
+	var store []rune
+	var result []string
+	resultLen := len([]rune(s[0]))
+	zero, one := 0, 0
+	for x := 0; x < resultLen; x++ {
+		for _, report := range s {
+			chars := []rune(report)
+			store = append(store, chars[x])
+		}
+		for _, data := range store {
+			switch data {
+			case '0':
+				zero++
+			case '1':
+				one++
+			}
+		}
+		fmt.Println(zero, one)
+		if zero < one {
+			result = append(result, "1")
+		} else {
+			result = append(result, "0")
+		}
+		zero, one = 0, 0
+	}
+	fmt.Println(result)
 	return 0
 }

2021/day3/main_test.go

@@ -4,7 +4,7 @@ import "testing"
 
 func TestPart1(t *testing.T) {
 	const expected = 198
-	result := Part1()
+	result := Part1(GetData("./test-data"))
 	if result != expected {
 		t.Fatalf("Expected: %d Result: %d", expected, result)
 	}