求一字符串出现次数最多的字符，asm

DATA SEGMENT

STR1    DB 'ADFAJXNXNEIUTYDFHRIFOFJAFLKDXZA'

N          EQU $-STR1

DATA ENDS

CODE  SEGMENT

             ASSUME DS:DATA,CS:CODE

START:MOV AX,DATA

              MOV DS,AX

              MOV DX,N-1

              MOV DI,0

              MOV BX,0

              MOV BP,0         ;控制外循环

LOOP1:MOV CX,DX

              MOV SI,0

              JMP   STR1[BP],#   ;判断是否重复

              JE      NEXT2

LOOP2:MOV AL,STR1[SI]

              CMP AL,STR1[SI+1]

              JNE   NEXT1

              INC   DI

              MOV STR1[SI+1],#  ;后面有相同的就至#

NEXT1:INC SI

              LOOP LOOP2

              DEC DX

              CMP BX,DI

              JNG  NEXT2

              MOV AH,AL   ;存字符

              MOV BX,DI    ;存个数

NEXT2:CMP BP,N-1

              JE      OVER

              INC   BP

              JMP LOOP1

             

OVER :MOV AH,4CH

             INT 21H

CODE ENDS

            END START

 

没有调试过，可能有不少错误，大概算法都是对的