From 854e2574feca08e596d232b12482802321fccca2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B7=A6=E7=A8=8B=E4=BA=91?= <algorithmzuo@163.com>
Date: Sun, 27 Sep 2020 11:31:33 +0800
Subject: [PATCH] modify code

---
 src/class10/Code01_UnionFind.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/class10/Code01_UnionFind.java b/src/class10/Code01_UnionFind.java
index f7f6422..6e12590 100644
--- a/src/class10/Code01_UnionFind.java
+++ b/src/class10/Code01_UnionFind.java
@@ -20,6 +20,9 @@ public class Code01_UnionFind {
 		public HashMap<Node<V>, Integer> sizeMap;
 
 		public UnionSet(List<V> values) {
+			nodes = new HashMap<>();
+			parents = new HashMap<>();
+			sizeMap = new HashMap<>();
 			for (V cur : values) {
 				Node<V> node = new Node<>(cur);
 				nodes.put(cur, node);