列表删除操作-list.remove()

public class ListRemoveTest {
public static void main(String args[]){
//list:{1,2,3,7,13,11,12,9,4,13}
ArrayList<Integer> list = new ArrayList<Integer>();
list.add(1);
list.add(2);
list.add(3);
list.add(7);
list.add(13);
list.add(11);
list.add(12);
list.add(9);
list.add(4);
list.add(13);

System.out.print("删除前list：");
for (Integer integer : list) {
System.out.print(integer + ",");
}

//存放删除数据的列表位置
ArrayList<Integer> positions = new ArrayList<Integer>();
for (int i = 0; i < list.size(); i++) {
for (int j = i+1; j < list.size(); j++) {
if (list.get(i) + list.get(j) == 14) {
if (!positions.contains(i)) {
positions.add(i);
}
if (!positions.contains(j)) {
positions.add(j);
}
}
}
}

System.out.println("");
System.out.print("需要删除的位置：");
for (Integer integer : positions) {
System.out.print(integer + ",");

//排序
Collections.sort(positions);
System.out.println("");
System.out.print("需要删除的位置（排序后）：");
for (Integer integer : positions) {
System.out.print(integer + ",");
}

//删除列表元素
for (int i = 0; i < positions.size(); i++) {
list.remove(positions.get(i) - i);
}

System.out.println("");
System.out.print("删除后的list:");
for (Integer integer : list) {
System.out.print(integer + ",");
}
}

}