Array.asList 중복 제거

String[] test = {"1","2","3","1","2"};

System.out.println("before length=" + test.length);

 

test = new HashSet<String>

(Arrays.asList(test)).toArray(new String[0]);

System.out.println("after length=" + test.length);

 

for(String s:test){

    System.out.println(s);            

}

 

/* result 

before length=5

after length=3

1

2

3

*/