第1个回答 2011-03-22
import java.util.ArrayList;
import java.util.List;
public class demo {
public static void main(String[] args) {
Integer[] nums = new Integer[]{2,5,4,7,8,9,6,4};
List<Integer> list = new ArrayList<Integer>();
for (int i = 0; i < nums.length; i++) {
if (!list.contains(nums[i])) {
list.add(nums[i]);
}
}
for (int i = 0; i < list.size(); i++) {
System.out.println(list.get(i));
}
}
}
第2个回答 2011-03-22
1、如果打印结果按从小到大的顺序(jdk1.5及以上):
import java.util.HashSet;
import java.util.Set;
public class SetTest {
public static void main(String[] arg){
int [] a = {2,5,4,7,8,9,6,4};
Set<Integer> data = new HashSet<Integer>();
for (int i : a) {
data.add(i);
}
for (Object object : data) {
System.out.println(object);
}
}
}
//2、按照原有顺序输出
public class SetTest {
public static void main(String[] arg){
int [] a = {2,5,4,7,8,9,6,4};
for(int i=0; i<a.length; i++){
int j = 0;
for(j=0; j<i; j++){
if(a[i]==a[j])
break;
}
if(i==j)
System.out.print(a[i]+" ");
}
}
}