add

5.leetcode/src/com/fanxb/interview/Q46.java

@@ -0,0 +1,27 @@
+package com.fanxb.interview;
+
+/**
+ * Created with IntelliJ IDEA
+ *
+ * @author fanxb
+ * Date: 2020/6/9 15:10
+ */
+public class Q46 {
+
+    public int translateNum(int num) {
+        String str = String.valueOf(num);
+        //a=f(0),b=f(1)
+        int a = 1, b = 1, sum = 1;
+        for (int i = 1, length = str.length(); i < length; i++) {
+            String temp = str.substring(i - 1, i + 1);
+            sum = temp.compareTo("10") >= 0 && temp.compareTo("25") <= 0 ? a + b : b;
+            a = b;
+            b = sum;
+        }
+        return sum;
+    }
+
+    public static void main(String[] args) {
+        System.out.println(new Q46().translateNum(12258));
+    }
+}