📝 docs : add 258. Add Digits.md

Author: GoogTech

docs/LeetCod刷题之旅及题目解析/258.各位相加/258.各位相加.md

@@ -0,0 +1,43 @@
+## 258. 各位相加
+> https://leetcode-cn.com/problems/add-digits/
+
+
+### Java
+```java
+/*
+ * @Author: Goog Tech
+ * @Date: 2020-08-16 14:24:10
+ * @LastEditTime: 2020-08-16 14:25:49
+ * @Description: https://leetcode-cn.com/problems/add-digits/
+ * @FilePath: \leetcode-googtech\#258. Add Digits\Solution.java
+ * @WebSite: https://algorithm.show/
+ */
+
+class Solution {
+    public int addDigits(int num) {
+        if(num < 10) return num;
+        return num % 9 == 0 ? 9 : num % 9;
+    }
+}
+```
+
+### Python
+```python
+'''
+Author: Goog Tech
+Date: 2020-08-16 14:25:08
+LastEditTime: 2020-08-16 14:25:22
+Description: https://leetcode-cn.com/problems/add-digits/
+FilePath: \leetcode-googtech\#258. Add Digits\Solution.py
+WebSite: https://algorithm.show/
+'''
+
+class Solution(object):
+    def addDigits(self, num):
+        """
+        :type num: int
+        :rtype: int
+        """
+        if num < 10: return num
+        return 9 if num % 9 == 0 else num % 9
+```

docs/SUMMARY.md

@@ -55,6 +55,7 @@
     * [232.用栈实现队列](LeetCod刷题之旅及题目解析/232.用栈实现队列/232.用栈实现队列.md)
     * [234.回文链表](LeetCod刷题之旅及题目解析/234.回文链表/234.回文链表.md)
     * [237.删除链表中的节点](LeetCod刷题之旅及题目解析/237.删除链表中的节点/237.删除链表中的节点.md)
+    * [258.各位相加](LeetCod刷题之旅及题目解析/258.各位相加/258.各位相加.md)
     * [283.移动零](LeetCod刷题之旅及题目解析/283.移动零/283.移动零.md)
     * [344.反转字符串](LeetCod刷题之旅及题目解析/344.反转字符串/344.反转字符串.md)
     * [345.反转字符串中的元音字母](LeetCod刷题之旅及题目解析/345.反转字符串中的元音字母/345.反转字符串中的元音字母.md)