冒泡排序+二分法查找

 1 #include <stdio.h>
 2
 3 void bubble(int *arr, int length)
 4 {
 5     int i, j, tmp;
 6     for(i=0;i<length-1;i++)
 7     {
 8         for(j=0;j<length-1-i;j++)
 9         {
10             if(arr[j]>arr[j+1])
11             {
12                 tmp = arr[j];
13                 arr[j] = arr[j+1];
14                 arr[j+1] = tmp;
15             }
16         }
17     }
18
19 }
20
21 int search(int *arr, int key, int high, int low)
22 {
23     int middle = 0;
24     if(high<low)
25         return -1;
26     middle = (low+high)/2;
27     printf("hello\n");
28     if(arr[middle] == key)
29     {
30         return middle;
31     }
32     else if(arr[middle]<key)
33         return search(arr, key, high, middle+1);
34     }
35     else
36     {
37         return search(arr, key, middle-1, low);
38     }
39 }
40
41 int main()
42 {
43     int i = 0;
44     int a[] = {1, 32, 5, 56, 39, 4, 67, 83, 25, 98};
45
46     for(i=0;i<10;i++)
47     {
48         printf("%d\t", a[i]);
49     }
50     printf("\n");
51     bubble(a, 10);
52     i = search(a, 32, 9, 0);
53     printf("i=%d\n", i);
54     for(i=0;i<10;i++)
55     {
56         printf("%d\t", a[i]);
57     }
58     printf("\n");
59     return 0;
60 }