linkedlist renew

rwang23 · Jan 17, 2016 · a44bf0e · a44bf0e
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diff --git a/DataStructure/notes.md b/DataStructure/notes.md
@@ -0,0 +1,3 @@
+##一些注意点
+
+- 判断arraylist为空 不能直接 arraylist == null 而是用isEmpty()
diff --git a/SUMMARY.md b/SUMMARY.md
@@ -166,6 +166,7 @@ This is the summary of my experience in LintCode.
    * [Scan Line](DataStructure/scan-line.md)
    * [Union Find](DataStructure/Union-Find.md)
    * [Huffman Compression](DataStructure/huffman_compression.md)
+   * [Some other notes](DataStructure/notes.md)
 
 * [Data Structure Problem](DataStructureProblem/README.md)
 	* [Valid Parentheses](DataStructureProblem/Valid-Parentheses.md)
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		@@ -0,0 +1,3 @@
		##一些注意点

		- 判断arraylist为空不能直接 arraylist == null 而是用isEmpty()