An algorithm to find the biggest number among set of numbers

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extra_12345

Joined: 21 Apr 2020
Posts: 28

extra_12345

Heya!i was thinking of an algorithm to find the biggest number among set of numbers then return it but couldn't figure it out, any help will be appreciated.

30 Jul 2020, 15:42

Roman

Joined: 21 Apr 2012
Posts: 1088

Roman

big numbers its 128 bits or 256 bits ?
900 trillion ?

30 Jul 2020, 16:03

extra_12345

Joined: 21 Apr 2020
Posts: 28

extra_12345

Roman wrote:

big numbers its 128 bits or 256 bits ?
900 trillion ?

Dwords,let's say I have 20 dword type numbers:
34
85
69
23
12
78
26
45
25
69
82
36
25
17
35
86
26
54
89
20

I want an algorithm that returns the biggest number amongst them,how can I accomplish this?

30 Jul 2020, 18:26

Roman

Joined: 21 Apr 2012
Posts: 1088

Roman

89 is big. In ax register.

Code:

BigDig dw 34,85,69,23,12,78,26,45,25,69,82,36
       dw 25,17,35,86,26,54,89,20

start:
        mov ebx,BigDig
        mov cx,20
        xor ax,ax
.22:
        cmp ax,word [ebx]        
        jae .33
        mov ax,word [ebx]        
.33:
        add ebx,2
        dec cx
        jnz .22

Last edited by Roman on 30 Jul 2020, 19:29; edited 2 times in total

30 Jul 2020, 19:07

Roman

Joined: 21 Apr 2012
Posts: 1088

Roman

Or this:

Code:

        mov ebx,BigDig
        mov cx,20
        xor ax,ax
.22:
        cmp ax,word [ebx]
        cmovnae ax,word [ebx]        
        add ebx,2
        dec cx
        jnz .22

30 Jul 2020, 19:26

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