1111.asm

用8086汇编语言实现选择排序算法

;南开大学 信息技术科学学院 二年级本科生
;email: [e-mail]
;2007/12/12
data segment
   logo1 db 'Type in the number (1~9) you want to do :$'
   logo2 db 'Type in three letters you want to query:$'
   words db 10 dup('$')
   count dw ?
   num dw ?
data ends
code segment
   assume ds:data,cs:code
start:
   mov ax,data
   mov ds,ax
   mov ah,09h
   mov dx,offset logo1
   int 21h
   mov ah,01h
   int 21h
   sub al,30h
   mov ah,0
   mov count,ax
   mov ah,02h
   mov dl,0dh
   int 21h
   mov dl,0ah
   int 21h
   mov ah,09h
   mov dx,offset logo2
   int 21h

   mov dx,count
   mov num,dx
   mov cx,dx
   mov si,0
   mov ah,01h
l1:
   int 21h
   mov words[si],al
   inc si
   loop l1
   mov ah,02h
   mov dl,0dh
   int 21h
   mov dl,0ah
   int 21h
   mov bx,num
   dec bx
   mov num,bx
   mov cx,bx
   mov si,0
l2:
   push cx
   mov cx,bx
   mov di,si
   add di,1
l5:
   cmp di,num
   ja l3
   mov dl,words[di]
   cmp words[si],dl
   jb l4
   xchg words[si],dl
   xchg words[di],dl
l4:
   inc di
   loop l5
l3:
   inc si
   dec bx
   pop cx
   loop l2

   mov dx,offset words
   mov ah,09h
   int 21h

   mov ah,4ch
   int 21h
code ends
   end start