feat: add python and java solutions to lcof question

添加《剑指 Offer》题解：面试题46. 把数字翻译成字符串

Author: yanglbme

lcof/面试题46. 把数字翻译成字符串/README.md

@@ -18,20 +18,40 @@
 
 ## 解法
 <!-- 这里可写通用的实现逻辑 -->
-
+递归求解。
 
 ### Python3
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```python
-
+class Solution:
+    def translateNum(self, num: int) -> int:
+        def cal(s):
+            if len(s) < 2:
+                return 1
+            t = int(s[:2])
+            return cal(s[1:]) if t < 10 or t > 25 else cal(s[1:]) + cal(s[2:])
+        return cal(str(num))
 ```
 
 ### Java
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```java
-
+class Solution {
+    public int translateNum(int num) {
+        return cal(String.valueOf(num));
+    }
+
+    private int cal(String s) {
+        int n = s.length();
+        if (n < 2) {
+            return 1;
+        }
+        int t = Integer.parseInt(s.substring(0, 2));
+        return t < 10 || t > 25 ? cal(s.substring(1)) : cal(s.substring(1)) + cal(s.substring(2));
+    }
+}
 ```
 
 ### ...

lcof/面试题46. 把数字翻译成字符串/Solution.java

@@ -0,0 +1,14 @@
+class Solution {
+    public int translateNum(int num) {
+        return cal(String.valueOf(num));
+    }
+
+    private int cal(String s) {
+        int n = s.length();
+        if (n < 2) {
+            return 1;
+        }
+        int t = Integer.parseInt(s.substring(0, 2));
+        return t < 10 || t > 25 ? cal(s.substring(1)) : cal(s.substring(1)) + cal(s.substring(2));
+    }
+}

lcof/面试题46. 把数字翻译成字符串/Solution.py

@@ -0,0 +1,8 @@
+class Solution:
+    def translateNum(self, num: int) -> int:
+        def cal(s):
+            if len(s) < 2:
+                return 1
+            t = int(s[:2])
+            return cal(s[1:]) if t < 10 or t > 25 else cal(s[1:]) + cal(s[2:])
+        return cal(str(num))