largest no.

//largest
data segment
array db 01h,02h,03h,04h,05h,06h,07h,08h,09h,10h,20h,30h,40h,50h,0ah,0bh,0ch,0dh,0eh,60h
largest db ?
data ends

code segment
assume cs:code,ds:data
start: mov ax,data
       mov ds,ax

       mov cl,13h
       lea si,array
       mov al,[si]
up:    inc si
       mov bl,[si]
       cmp al,bl
       jnc down
       mov al,bl
down:  dec cl
       jnz up
       mov largest,al
       int 03h
code ends
end start