實現無序數組



package array.noorder;

/**
 * @author neal_ke 實現無序數組
 */
public class OperateWithIndex {
 private int[] datas = null;
 private int currentIndex = 0;

 // 通過構造方法設置datas的長度
 public OperateWithIndex(int length) {
  datas = new int[length];
 }

 public int insert(int data) {
  datas[currentIndex] = data;
  currentIndex++;
  return currentIndex - 1;
 }

 public void remove(int index) {
  for (int i = index; i < currentIndex; i++) {
   datas[i] = datas[i + 1];
  }
  currentIndex--;
 }

 public int searchOne(int index) {
  return datas[index];
 }

 public void printDatas() {
  System.out.println("=============>");
  for (int d : datas) {
   System.out.println(d);
  }
 }
 
 public static void main(String[] args) {
  OperateWithIndex operateWithIndex = new OperateWithIndex(10);
  operateWithIndex.insert(10);
  operateWithIndex.insert(1);
  operateWithIndex.insert(3);
  operateWithIndex.insert(11);
  operateWithIndex.printDatas();
  
  operateWithIndex.remove(0);
  operateWithIndex.printDatas();
  
  int ret = operateWithIndex.searchOne(1);
  System.out.println("ret="+ret);
  
  
  
 }

}