AdditivePersistence resolved

esa-kian · esa-kian · commit aff6badfe308 · 2024-01-29T06:16:39.000Z
diff --git a/src/easy/AdditivePersistence.go b/src/easy/AdditivePersistence.go
@@ -0,0 +1,30 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// AdditivePersistence calculates the additive persistence of a positive integer
+func AdditivePersistence(num int) int {
+	times := 0
+	added := num
+	for added > 9 {
+		sum := 0
+		digits := strconv.Itoa(added)
+		for _, digit := range digits {
+			digitInt, _ := strconv.Atoi(string(digit))
+			sum += digitInt
+		}
+		added = sum
+		times++
+	}
+	return times
+}
+
+func main() {
+	result1 := AdditivePersistence(199)
+	fmt.Println(result1)
+	result2 := AdditivePersistence(913)
+	fmt.Println(result2)
+}
