feat(ml):$172.factorial-trailing-zeroes.md (#448)

Author: ztianming

problems/172.factorial-trailing-zeroes.md

@@ -57,7 +57,7 @@ https://leetcode-cn.com/problems/factorial-trailing-zeroes/
 
 ## 代码
 
-* 语言支持：JS，Python
+* 语言支持：JS，Python，C++, Java
 
 Javascript Code:
 
@@ -106,6 +106,41 @@ class Solution:
         return n // 5 + self.trailingZeroes(n // 5)
 ```
 
+C++ Code:
+
+```c++
+class Solution {
+public:
+    int trailingZeroes(int n) {
+        int res = 0;
+        while(n >= 5)
+        {
+            n/=5;
+            res += n;
+        }
+        return res;
+    }
+};
+```
+
+
+Java Code:
+
+```js
+class Solution {
+    public int trailingZeroes(int n) {
+        int res = 0;
+        while(n >= 5)
+        {
+            n/=5;
+            res += n;
+        }
+        return res;
+    }
+}
+```
+
+
 **复杂度分析**
 - 时间复杂度：$O(logN)$
 - 空间复杂度：$O(1)$