java实现选择排序算法

public  void selectionSort(int data[],int n)
// pre: 0<=n <= data.length
// post: values in data[0..n-1] in ascending order  
{   
    int numUnsorted=n; // number of values not in order 
    int index;       // general index 
    int max;
    int temp;
    while (numUnsorted > 0)
    {
          //determine a maximum value in Array
          max=0;
          for (index=1; index < numUnsorted; index++)
            if (data[max] < data[index])
                  max=index;
          // swap data[max] and data[numUnsorted-1]
          temp                = data[max];
          data[max]           = data[numUnsorted-1];
          data[numUnsorted-1] = temp;
          numUnsorted--;
    }
}