commit

Author: 王俊超

.idea/modules.xml

@@ -11,10 +11,11 @@ public int addDigits(int num) {
 
         int result = 0;
 
-        while (num != 0) {
+        while (num > 0) {
             result += num % 10;
             num /= 10;
 
+            // 需要重新进行位相加
             if (num == 0 && result > 9) {
                 num = result;
                 result = 0;

【258】【Add Digits】/src/Solution.java

@@ -0,0 +1,13 @@
+/**
+ * @author: wangjunchao(王俊超)
+ * @time: 2018-10-10 13:35
+ **/
+public class Test {
+    public static void main(String[] args) {
+        Solution solution = new Solution();
+
+        System.out.println(solution.addDigits(38));
+        System.out.println(solution.addDigits(999999999));
+        System.out.println(solution.addDigits(100000000));
+    }
+}

【258】【Add Digits】/src/Test.java

@@ -0,0 +1,29 @@
+/**
+ * @author: wangjunchao(王俊超)
+ * @time: 2018-10-10 13:45
+ **/
+public class Solution {
+    public boolean isUgly(int num) {
+
+        if (num < 1) {
+            return false;
+        } else if (num == 1) {
+            return true;
+        }
+
+        int remainder;
+        while ((num % 2) == 0) {
+            num /= 2;
+        }
+
+        while ((num % 3) == 0) {
+            num /= 3;
+        }
+
+        while ((num % 5) == 0) {
+            num /= 5;
+        }
+
+        return num == 1;
+    }
+}