有符号8位整数的冒泡排序

 1 ;有符号整数的冒泡排序
 2 
 3 assume cs:code,ds:data
 4 data segment
 5         db 61h,84h,93h,0c4h,17h,0ffh,52h,2ah
 6         ;db 8h,7h,6h,5h,4h,3h,2h,0ffh
 7 data ends
 8 
 9 code segment
10 start:
11         mov ax,data
12         mov ds,ax       ;定义数据段
13 
14         mov cx,7        ;外层循环次数
15 
16         call loopi
17         mov ax,4c00h
18         int 21h
19 
20 loopi:  
21         
22         call s
23         
24         
25 loop loopi
26         ret        ;call loopi返回
27 
28 
29 s:
30         push cx
31         mov si,7
32 s1:        
33 
34         mov al,[si]
35         mov dl,[si-1]
36         cmp al,dl
37         jge x    ;符合就不执行交换
38         
39         xchg al,dl
40 
41 x:        mov [si],al        ;更新数据
42         mov [si-1],dl
43         dec si
44         loop s1
45 
46         pop cx
47         ret
48 
49 
50 code ends
51 end start