updated repo layout

day01/1b/main.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+)
+
+func main() {
+	fmt.Println(countGreater(returnContent("../input")))
+}
+
+func countGreater(input *[]int) (count int) {
+	//Find how many elements have increased from previous
+
+	for i := 3; i < len(*input); i++ {
+		sum1 := (*input)[i-1] + (*input)[i-2] + (*input)[i-3]
+		sum2 := (*input)[i-1] + (*input)[i-2] + (*input)[i]
+		if sum2 > sum1 {
+			count++
+		}
+	}
+	return
+}
+
+func returnContent(path string) *[]int {
+	//read file and return it as an array of integers
+
+	file, err := os.Open(path)
+	var content []int
+
+	if err != nil {
+		fmt.Println("Unlucky, the file didn't open")
+		return &content
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		value, _ := strconv.Atoi(scanner.Text())
+		content = append(content, value)
+	}
+
+	return &content
+}