File:Binary heap bottomup vs topdown.svg

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English: This picture shows the difference in time complexity between building a heap ('heapify') from the bottom up and form top down. The number in each circle shows the maximum times of swapping needed to add the respective node into the heap. By summing up the numbers on two sides, it will be obvious that building from bottom up have fewer times than from top down.
中文（臺灣）：此圖顯示出建造堆疊時，"從下往上建造"與"從上往下"之間時間複雜度的差別。圓圈上的每個數字表示加入該節點時，最多需要交換節點的次數。只要把兩邊的次數分別加總，就會很明顯地由下而上建造堆疊會比較省時間（交換節點的次數較少）。
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current09:53, 14 January 2013Thumbnail for version as of 09:53, 14 January 20131,687 × 609 (14 KB)Explorer09 (talk | contribs)Make the note caption smaller
09:42, 14 January 2013Thumbnail for version as of 09:42, 14 January 20131,687 × 649 (15 KB)Explorer09 (talk | contribs)User created page with UploadWizard

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