自己写的实验7
assume cs:code, ds:data, es:tabledata segment
db '1975','1976','1977','1978','1979','1980','1981','1982','1983','1984','1985','1986','1987','1988','1989','1990','1991','1992','1993','1994','1995'
;以上表示21年的21个byte型字符串
dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514,345980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
;以上是21年公司的总收入21个dword型数据
dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226,11542,14430,15257,17800
;以上是21年公司雇员人数的21个word型数据
data ends
table segment
db 21 dup ('year revn em av ')
table ends
code segment
start:
mov ax,data
mov ds,ax ;将数据源指向DS
mov ax,table
mov es,ax ;将目标数据指向ES
mov si,0
mov di,0
mov cx,21
year:
mov ax,ds:
mov es:,ax
mov ax,ds:
mov es:,ax
add si,4
add di,16
loop year ;导入年份
mov cx,21
mov si,54h
mov di,0
revenue:
mov ax,ds:
mov dx,ds:
mov es:,ax
mov es:,dx
add si,4
add di,16
loop revenue ;导入总收入
mov cx,21
mov si,0a8h
mov di,0
employee:
mov ax,ds:
mov es:,ax
add si,2
add di,16
loop employee ;导入员工数
mov cx,21
mov bx,0
avginc:
mov ax,es:
mov dx,es:
div word ptr es:
mov es:,ax
add bx,16
loop avginc
mov ax,4c00h
int 21h
code ends
end start
好像没有用到栈,设置了4次CX循环不知道能否合并,另外做除法的时候发现DS的寻址好困难,转而用TABLE里已经搬运过来的数据,效果还可以。汇编还蛮有意思的。。
现在看视频学习一下小甲鱼的解题方法 看了视频后,修改如下:利用数据类型BX+4,SI+2,优化成一个循环:
assume cs:code, ds:data, es:table
data segment
db '1975','1976','1977','1978','1979','1980','1981','1982','1983','1984','1985','1986','1987','1988','1989','1990','1991','1992','1993','1994','1995'
;以上表示21年的21个byte型字符串
dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514,345980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
;以上是21年公司的总收入21个dword型数据
dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226,11542,14430,15257,17800
;以上是21年公司雇员人数的21个word型数据
data ends
table segment
db 21 dup ('year revn em av ')
table ends
code segment
start:
mov ax,data
mov ds,ax ;将数据源指向DS
mov ax,table
mov es,ax ;将目标数据指向ES
mov bx,0
mov si,0
mov di,0
mov cx,21
copy:
mov ax,ds:
mov es:,ax
mov ax,ds:
mov es:,ax ;复制年份
mov ax,ds:
mov es:,ax
mov ax,ds:
mov es:,ax ;复制收入
mov ax,ds:
mov es:,ax ;复制人数
mov ax,ds:
mov dx,ds:
div word ptr ds:
mov es:,ax ;计算平均工资
add bx,4
add si,2
add di,16
loop copy
mov ax,4c00h
int 21h
code ends
end start
页:
[1]