38: pandigital multiples

38_pandigital_multiples/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	"sort"
+	"strconv"
+)
+
+func main() {
+	num := 0
+	for x := 9487; x >= 9234; x-- {
+		res := 100002 * x
+		if isPandigital(strconv.Itoa(res)) {
+			num = res
+			break
+		}
+	}
+	fmt.Println("num:", num)
+}
+
+func isPandigital(s string) bool {
+	var ss []string
+	for _, c := range s {
+		ss = append(ss, string(c))
+	}
+	sort.Strings(ss)
+	s = ""
+	for _, c := range ss {
+		s += c
+	}
+	return s == "123456789"
+}