添加了684.冗余连接 的Python并查集简洁写法

problems/0684.冗余连接.md

@@ -256,6 +256,23 @@ class Solution:
         return []
 ```
 
+### Python简洁写法：
+
+```python
+class Solution:
+    def findRedundantConnection(self, edges: List[List[int]]) -> List[int]:
+        n = len(edges)
+        p = [i for i in range(n+1)]
+        def find(i):
+            if p[i] != i:
+                p[i] = find(p[i])
+            return p[i]
+        for u, v in edges:
+            if p[find(u)] == find(v):
+                return [u, v]
+            p[find(u)] = find(v)
+```
+
 ### Go
 
 ```go