frequence1

Collection(set,list,queue)接口toArray方法   
  
List Arrays.asList(array[]);   
  
System.arraycopy(src, srcPos, dest, destPos, length)   
  
  
new String("Abc".toCharArray());   
new String("Abc".getBytes("UTF-8"),"UTF-8");   
  
  
==================================   
排序:   
Collection.sort()对List only  !还是list最好  

 

 

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