Talk:Rader's FFT algorithm: Difference between revisions

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m Signing comment by Raysphere24 - "Time complexity without zero-padding: new section"
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== Time complexity without zero-padding ==
 
Without zero-padding, the article states that the worst case requires O(N<sup>2</sup>) time. But each step of the recursion halves N, therefore isn't it still O(N log N) time? <!-- Template:Unsigned --><span class="autosigned" style="font-size:85%;">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Raysphere24|Raysphere24]] ([[User talk:Raysphere24#top|talk]] • [[Special:Contributions/Raysphere24|contribs]]) 08:18, 3 January 2021 (UTC)</span> <!--Autosigned by SineBot-->