删除数组中重复的元素

删除数组中的重复元素，并保持顺序，下面是代码实现：

import java.util.Arrays;  


public class RemoveDuplate {  
    public static void main(String[] args) {  
         int arr[]={4,2,4,6,1,2,4,7,8};  
         System.out.println(Arrays.toString(repeat(arr)));  
    }  

    public static int[] repeat(int [] arr){  
          if(arr == null){  
              return arr;  
          }  

          int arrayLength = arr.length;  
          if(arrayLength == 0){  
              return arr;  
          }  

          int duplicateCount = 0;  
          boolean[] flags = new boolean[arrayLength];  
          for(int i = 0; i < arrayLength; i++){  
              if(flags[i]){  
                  continue;  
              }  
              for(int j = i + 1; j < arrayLength; j++){  
                  if(arr[i] == arr[j]){  
                      flags[j] = true;  
                      duplicateCount++;  
                  }  
              }  
          }  
          int[] noDuplicateArray = new int[arrayLength - duplicateCount];  
          int index = 0;  
          for(int i = 0; i < arrayLength; i++){  
              if(!flags[i]){  
                  noDuplicateArray[index++] = arr[i];  
              }  
          }  
          return noDuplicateArray;  
    }  
}

控制台打印结果：

转：

勤奋的asialee的博客http://asialee.iteye.com/blog/2169454