add common use parsing file

parse.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"bufio"
+	"strconv"
+	"strings"
+)
+
+var spaceReplacer = strings.NewReplacer("\t", "", " ", "")
+
+func scanints(str string) []int {
+	ints := make([]int, 0)
+	scanner := bufio.NewScanner(strings.NewReader(str))
+	scanner.Split(bufio.ScanWords)
+
+	for scanner.Scan() {
+		val, err := strconv.Atoi(scanner.Text())
+		if err != nil {
+			panic(err)
+		}
+		ints = append(ints, val)
+	}
+	return ints
+}