【汇编语言】筛选非负数+冒泡排序

ASSUME	DS:seg1,CS:seg2
seg1	SEGMENT
FIRST	DB	5,-8,3,9,-2,-5,7,-9,0,5,4,9,-6,1,-1,8,-3,6,2,-7,0,-4
N	EQU	$-FIRST
SECOND	DB	30 DUP(?)
seg1	ENDS

seg2	SEGMENT

START:	MOV	AX,seg1
	MOV	DS,AX
	LEA	SI,FIRST
	LEA	DI,SECOND
	MOV	DX, 0
	MOV	CX,N
LLP:	MOV	AL,[SI]
        	TEST	AL,10000000B
	JNZ	GO		;ZF = 0,是负数
	MOV	[DI],AL
	INC	DI
	INC	DX
GO:	INC	SI
	LOOP	LLP
;排序
	DEC	DX
SORT:	MOV	CX, DX
	LEA	DI, SECOND
AGAIN:	INC	DI
	MOV	AL, [DI]
	CMP	[DI - 1], AL
	JB	LP		;前一个比后一个小
	XCHG	[DI - 1], AL
	MOV	[DI], AL
LP:	LOOP	AGAIN
	DEC	DX
	JNZ	SORT
	HLT
	MOV	AH, 4CH
	INT	21H
seg2	ENDS

	END	START