Fixed #4764 (#4779)

* Fixed #4764 * Fixes #4764
2023-10-11 13:06:12 +08:00 · 2021-09-24 16:24:38 +05:30 · 2021-09-24 16:24:38 +05:30 · 5d02103b27
commit 5d02103b27
parent 66a528b171
1 changed files with 4 additions and 1 deletions
--- a/data_structures/disjoint_set/disjoint_set.py
+++ b/data_structures/disjoint_set/disjoint_set.py
@ -26,7 +26,10 @@ def union_set(x, y):
    disjoint set tree will be more flat.
    """
    x, y = find_set(x), find_set(y)
-    if x.rank > y.rank:
+    if x == y:
+        return
+
+    elif x.rank > y.rank:
        y.parent = x
    else:
        x.parent = y