Merge pull request halfrost#119 from NovaHe/fix/263

fix 263: remove redundant compute

Author: halfrost

leetcode/0263.Ugly-Number/263. Ugly Number.go

@@ -1,9 +1,11 @@
 package leetcode
 
 func isUgly(num int) bool {
-	for i := 2; i < 6 && num > 0; i++ {
-		for num%i == 0 {
-			num /= i
+	if num > 0 {
+		for _, i := range []int{2, 3, 5} {
+			for num%i == 0 {
+				num /= i
+			}
 		}
 	}
 	return num == 1

website/content/ChapterFour/0200~0299/0263.Ugly-Number.md

@@ -58,14 +58,17 @@ Explanation: 14 is not ugly since it includes another prime factor 7.
 package leetcode
 
 func isUgly(num int) bool {
-	for i := 2; i < 6 && num > 0; i++ {
-		for num%i == 0 {
-			num /= i
+	if num > 0 {
+		for _, i := range []int{2, 3, 5} {
+			for num%i == 0 {
+				num /= i
+			}
 		}
 	}
 	return num == 1
 }
 
+
 ```