Re: d�mi 5 -- SkilaboÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ°askjÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ³ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ°a TÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ¶lvunarfrÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ¦ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ°i 2

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Date Posted: 14:02:41 03/21/02 Thu
Author: Hj�lmt�r
Subject: Re: d�mi 5
In reply to: 's message, "d�mi 5" on 09:35:38 03/21/02 Thu

>�g er ekki alveg a� �tta mig � hva� er veri� a� bi�ja
>um � d�mi 5 � vikubla�inu. Er mi�gildi� ekki annars
>vali� me� k. e�a k-ta minnsta stak. �annig ra�ast >=
>og <= � kringum �a�. Og �au st�k sem eru j�fn k-ta
>gildinu ra�ast alveg r�tt �egar kalla� er �
>selection(...). Hva�a auka f�tusa er veri� a� bi�ja um
>?

Nei, �a� sem gerist vi� Val-reikniriti� � b�kinni er a� eitt stak sem � heima � k-ta s�tinu endar �ar. Fyrir
framan k-ta s�ti� eru �ll st�k sem eru <= �a� stak, en � engri s�rstakri r��, �annig g�tu hin st�kin sem hafa sama
gildi og staki� � a[k] veri� �t um allt � �essum fremri hluta. Sama gildir um aftari hluta vektorsins. �a� er
engin s�rst�k r�� honum.

Sem d�mi �egar be�i� er um �ri�ja minnsta staki� � vektornum [7, 5, 2, 5, 6, 5] �� g�tum vi� fengi� �t
[5, 2, 5, 7, 5, 6]. H�r er �ri�ja minnsta staki�, sem er 5 komi� � r�tt s�ti, en hin tv� st�kin me� sama gildi eru
ekki endilega vi� hli�ina � �v�.

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