Java选择排序

public class Tester {

   public static void selectionSort(int[] arr){  

      for (int i = 0; i < arr.length - 1; i++){

         int index = i;  

         for (int j = i + 1; j < arr.length; j++){  

            if (arr[j] < arr[index]){  

               index = j;

            }  

         }  

         int smallerNumber = arr[index];  

         arr[index] = arr[i];  

         arr[i] = smallerNumber;  

      }  

   }  

   public static void main(String a[]){  

      int arr[] = {21,60,32,01,41,34,5};

      System.out.println("Selection Sort");  

      for(int i:arr){  

         System.out.print(i+" ");  

      }  

      System.out.println();  

      selectionSort(arr);

      System.out.println("Selection Sort");  

      for(int i:arr){  

         System.out.print(i+" ");  

      }  

   }  

}