Data commit

Task/Happy-numbers/Go/happy-numbers.go

@@ -0,0 +1,29 @@
+package main
+
+import "fmt"
+
+func happy(n int) bool {
+	m := make(map[int]bool)
+	for n > 1 {
+		m[n] = true
+		var x int
+		for x, n = n, 0; x > 0; x /= 10 {
+			d := x % 10
+			n += d * d
+		}
+		if m[n] {
+			return false
+		}
+	}
+	return true
+}
+
+func main() {
+	for found, n := 0, 1; found < 8; n++ {
+		if happy(n) {
+			fmt.Print(n, " ")
+			found++
+		}
+	}
+	fmt.Println()
+}