数组排序（冒泡和快速）

 public static void sort(int[]  values){
     
       
        int temp;
        
       for(int i=0 ; i < values.length ; ++i){
            
            for(int j=0; j <values.length - i - 1; ++j){
                
               if(values[j] > values[j + 1]){
                    temp = values[j];
                    values[j] = values[j + 1];
                    values[j + 1] = temp;
                                       
                   
               }
                     }            
      }
   }

public static void main(String[] args) {
    int[] arr = {1,4,7,2,5,8,3,6,9};
    quickSort(arr);
}
 
public static void quickSort(int[] a) {
    quickSort(a, 0, a.length - 1);
}
 
private static void quickSort(int[] a, int start, int end) {
        int left = start;
        int right = end - 1;
        int pivot = a[end];
        
        while (left < right) {
            if (a[left] <= pivot) {
                left++;
                continue;
            }
            if (a[right] > pivot) {
                right--;
                continue;
            }
            swap(a, left++, right);
        }

        if (a[left] < pivot) {
            left++;
        }
        swap(a, left, end);

  if(left - 1 > start) {
         quickSort(a, start, left - 1);
        }
        if(left + 1 < end) {
         quickSort(a, left + 1, end);
        }   
}