//直接上代码： public static void main(String[] args) {        List
     
       list = new Vector
      
       (20);        for (int i = 0; i < 10; i++) {            list.add(i % 3);            list.add(i % 6);            list.add(i % 2);            list.add(i % 4);        }        System.out.println("原始元素：" + list);        List
       
         reList = new Vector
        
         (20);        for (int i = 0; i < list.size() - 1; i++) {            for (int j = i + 1; j < list.size(); j++) {                if (list.get(i) == list.get(j)) {                    reList.add(list.remove(i));                    i--;                    break;                }            }        }//        System.out.println("去重后：" + list);//        System.out.println("重复元素：" + reList);//        输出：//        原始元素：原始元素：[0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 0, 2, 0, 3, 1, 3, 1, 4, 0, 0, 2, 5, 1, 1, 0, 0, 0, 2, 1, 1, 1, 3, 2, 2, 0, 0, 0, 3, 1, 1]//        去重后：[4, 5, 2, 0, 3, 1]//        重复元素：[0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 0, 2, 0, 3, 1, 3, 1, 0, 0, 2, 1, 1, 0, 0, 0, 2, 1, 1, 1, 3, 2, 0, 0, 1]        //去重方法2        Set
         
           intset = new HashSet
          
           (list); System.out.println("set去重后" + intset);// 输出：// 原始元素：[0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 0, 2, 0, 3, 1, 3, 1, 4, 0, 0, 2, 5, 1, 1, 0, 0, 0, 2, 1, 1, 1, 3, 2, 2, 0, 0, 0, 3, 1, 1]// set去重后[0, 1, 2, 3, 4, 5] //数组 List
           
             notReList = new Vector
            
             (20); int[] intarr = new int[]{1, 2, 4, 5, 6, 3, 4, 2, 3, 4, 34, 5, 23, 5, 2, 3, 4, 3, 3,99}; for (int i = 0; i < intarr.length ; i++) { //如果不计算notReList用i < intarr.length改成i < intarr.length-1 if (!notReList.contains(intarr[i])) { notReList.add(intarr[i]); } for (int j = i + 1; j < intarr.length; j++) { if (intarr[i] == intarr[j]) { reList.add(intarr[i]); break; } } } System.out.println("去重后：" + notReList); System.out.println("重复元素：" + reList);// 输出：// 去重后：[1, 2, 4, 5, 6, 3, 34, 23, 99]// 重复元素：[2, 4, 5, 3, 4, 2, 3, 4, 5, 3, 3]
            
           
          
         
        
       
      
     

// list和数组也可以互转：// List intList=Arrays.asList(intarr);或// Integer[] intarr2=new Integer[list.size()];// list.toArray(intarr2);

 

}

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