update algorithms

Author: shijiebei2009

README.md

@@ -15,10 +15,10 @@ Problems
 
 * [Clockwise print array - 顺时针打印数组](src%2Fmain%2Fjava%2Fcn%2Fcodepub%2Falgorithms%2Farrays%2FPrintArray.java)
 
-### Strings
+### commons
 
-* 1
-* 2
+* [Hex conversion utility - 进制转换工具](src%2Fmain%2Fjava%2Fcn%2Fcodepub%2Falgorithms%2Fcommons%2FConversionOfNumberSystems.java)
+* [Jaccard similarity coefficient - 杰卡德相似度系数](src%2Fmain%2Fjava%2Fcn%2Fcodepub%2Falgorithms%2Fcommons%2FJaccardSimilarityCoefficient.java)
 
 ### Binary Numbers and bits operators
 

src/main/java/cn/codepub/algorithms/ultithread/ThreadSynchronization.java renamed to src/main/java/cn/codepub/algorithms/multithread/ThreadSynchronization.java

@@ -1,4 +1,4 @@
-package cn.codepub.algorithms.ultithread;
+package cn.codepub.algorithms.multithread;
 
 import java.util.concurrent.atomic.AtomicInteger;
 

src/main/java/cn/codepub/algorithms/chinese/spelling/ChineseToSpelling.java renamed to src/main/java/cn/codepub/algorithms/spelling/ChineseToSpelling.java

@@ -1,4 +1,4 @@
-package cn.codepub.algorithms.chinese.spelling;
+package cn.codepub.algorithms.spelling;
 
 import com.github.stuxuhai.jpinyin.PinyinFormat;
 import com.github.stuxuhai.jpinyin.PinyinHelper;