From f5d902cdd5aea489eb0f552d8c816c382b11948d Mon Sep 17 00:00:00 2001
From: Omooo <869759698@qq.com>
Date: Wed, 1 Jul 2020 08:54:06 +0800
Subject: [PATCH] =?UTF-8?q?Update=20=E9=80=92=E5=BD=92=E7=9B=B8=E5=85=B3.m?=
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---
 blogs/Algorithm/剑指 Offer/递归相关.md | 22 ++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/blogs/Algorithm/剑指 Offer/递归相关.md b/blogs/Algorithm/剑指 Offer/递归相关.md
index fd711ab..a1787a6 100644
--- a/blogs/Algorithm/剑指 Offer/递归相关.md	
+++ b/blogs/Algorithm/剑指 Offer/递归相关.md	
@@ -24,3 +24,25 @@ class Solution {
 }
 ```
 
+#### [10- II. 青蛙跳台阶问题](https://leetcode-cn.com/problems/qing-wa-tiao-tai-jie-wen-ti-lcof/)
+
+```java
+class Solution {
+
+    public int numWays(int n) {
+        int result = 0;
+        int start = 1;
+        int end = 1;
+        if (n == 0 || n == 1) {
+            return 1;
+        }
+        for (int i = 2; i <= n; i++) {
+            result = (start + end) % 1000000007;
+            start = end;
+            end = result;
+        }
+        return result;
+    }
+}
+```
+