add 2024/day2

2024/helper/input.go

@@ -37,3 +37,17 @@ func ReadLinesTwoIntSlices() (list_a []int, list_b []int) {
 
 	return list_a, list_b
 }
+
+func ReadLinesToIntArrays() (lines [][]int) {
+	scanner := GetLines()
+	for scanner.Scan() {
+		string_line := strings.Fields(scanner.Text())
+		int_line := make([]int, len(string_line))
+		for i, val := range string_line {
+			int_line[i], _ = strconv.Atoi(val)
+		}
+		lines = append(lines, int_line)
+	}
+
+	return lines
+}

2024/helper/math.go

@@ -0,0 +1,9 @@
+package helper
+
+func Abs(x int) int {
+	if x < 0 {
+		return -x
+	}
+
+	return x
+}