public class OperateNoIndexRepeatable {
private int[] datas = null;
private int currentIndex = 0;
public OperateNoIndexRepeatable(int length) {
datas = new int[length];
}
private void insert(int data){
datas[currentIndex] = data;
currentIndex++;
}
private int getIndex(int begin,int data){
int index =-1;
//1:遍歷數組中的數據
for(int i=begin;i<currentIndex;i++){
//2:如果找到,則返回索引
if(data==datas[i]){
index = i;
break;
}
}
return index;
}
public void remove(int data){
//1:查找這個數據對應的索引
int index = getIndex(0, data);
//2:循環向後查找這個數據,直到找不到位置
while(index>=0){
for(int i= index;i<currentIndex;i++){
datas[i]=datas[i+1];
}
currentIndex--;
index = getIndex(index, data);
}
}
public List<Integer> searchOne(int data){
List<Integer> retList = new ArrayList<Integer>();
//1:查找這個數據對應的索引
int index = this.getIndex(0,data);
while(index >= 0){
//2:如果有,就加入到要返回的集合中
retList.add(datas[index]);
//再次查找後續的數據對應的索引
index = this.getIndex(index+1,data);
}
return retList;
}
public void printDatas(){
System.out.println("======================================>");
for(int d : datas){
System.out.println(d);
}
}
public static void main(String[] args) {
OperateNoIndexRepeatable t = new OperateNoIndexRepeatable(10);
t.insert(3);
t.insert(6);
t.insert(1);
t.insert(2);
t.insert(2);
t.insert(6);
t.printDatas();
t.remove(6);
t.printDatas();
List<Integer> ret = t.searchOne(2);
System.out.println("ret=="+ret);
}
}