去空格

.model small
.data
string db 'hsu dhiw dwi dwio','$'
.code
    mov si,offset string
outlp:
    cmp byte ptr[si],'$'
    jz done
    cmp byte ptr[si],' '
    jz next
    mov di,si
inlp:
    inc di
    mov al,[di]
    mov [di-1],al
    cmp byte ptr[di],'$'
    jnz inlp
    jmp outlp
next:
    inc si
    jmp outlp
done:
    mov ah,09
    mov dx,offset string
    int 21h
.exit 0
end