From 5efbb6fa864d32b2703a9044f70636ea58983f89 Mon Sep 17 00:00:00 2001
From: liu13 <1099976891@qq.com>
Date: Thu, 5 Dec 2019 13:43:45 +0800
Subject: [PATCH] 20191215

---
 readme.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/readme.md b/readme.md
index ea22c1a..268a202 100644
--- a/readme.md
+++ b/readme.md
@@ -216,6 +216,7 @@ LeetCode 指南
 | 493 [Java](./code/lc493.java)
 | 494 [Java](./code/lc494.java)
 | 538 [Java](./code/lc538.java)
+| 542 [Java](./code/lc542.java)
 | 543 [Java](./code/lc543.java)
 | 559 [Java](./code/lc559.java)
 | 560 [Java](./code/lc543.java)
-- 
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