/** * 去除重复数据 * @author Sunqinbo */ public class RemoveDuplicateData { public static void main(String[] args) { Integer[] a = new Integer[] { 1, 4, 5, 2, -6, 5, 9, 10, 10 }; Set<Integer> set = new HashSet<Integer>(); for (int i = 0; i < a.length; i++) { boolean b = set.add(a[i]); if (!b) { System.out.println("重复数据:" + a[i] + " 索引位置:" + i); } } } }