[問題] heapsort
看板Prob_Solve (計算數學 Problem Solving)作者mqazz1 (無法顯示)時間13年前 (2012/01/07 21:09)推噓1(1推 0噓 5→)留言6則, 1人參與討論串1/1
Let A be an array of n arbitrary and distinct numbers
A has the following property: If we imagine B as being sorted version of A,
then any element that is at position i in array A would, in B,
be at a position j such that |i–j| <= k
In other words, each element in A is not farther than k positions away from
where it belongs in the sorted version of A
Suppose you are given such an array A, and you are told that A has this
property for a particular value k (that value of k is also given to you)
Design an O(n lg k) time algorithm for sorting A.
網路上的解法是這樣: http://algnotes.wordpress.com/2010/06/08/150/
可是我看不太懂這樣跟2k有甚麼關係@@
請問有人可以舉簡單的例子來說明網路的解法嗎?
還是有更好的方法呢?
謝謝
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