Update 0055.跳跃游戏.md

增加Python for循环版

problems/0055.跳跃游戏.md

@@ -119,6 +119,18 @@ class Solution:
         return False
 ```
 
+```python
+## for循环
+class Solution:
+    def canJump(self, nums: List[int]) -> bool:
+        cover = 0
+        if len(nums) == 1: return True
+        for i in range(len(nums)):
+            cover = max(i + nums[i], cover)
+            if cover >= len(nums) - 1: return True
+        return False
+```
+
 ### Go
 ```Go
 func canJUmp(nums []int) bool {