Update 0452.用最少数量的箭引爆气球.md

增加 python 不改变原数组 写法

problems/0452.用最少数量的箭引爆气球.md

@@ -177,7 +177,23 @@ class Solution:
                 points[i][1] = min(points[i - 1][1], points[i][1]) # 更新重叠气球最小右边界
         return result
 ```
+```python
+class Solution: # 不改变原数组
+    def findMinArrowShots(self, points: List[List[int]]) -> int:
+        points.sort(key = lambda x: x[0])
+        sl,sr = points[0][0],points[0][1]
+        count = 1
+        for i in points:
+            if i[0]>sr:
+                count+=1
+                sl,sr = i[0],i[1]
+            else:
+                sl = max(sl,i[0])
+                sr = min(sr,i[1])
+        return count
 
+
+```
 ### Go
 ```go
 func findMinArrowShots(points [][]int) int {