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Jun 16, 2020 at 10:30 history edited CommunityBot
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Jan 4, 2020 at 16:31 answer added Gerardo Zinno timeline score: 0
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May 13, 2018 at 4:22 comment added greybeard no […] statistical algorithms I hope amortised analysis is OK.
May 13, 2018 at 4:16 comment added greybeard @YuvalFilmus Time cannot be smaller than space true. You are cheating in some way does not follow from "$O(m+n)$ time and $O(mn)$ space": with $1 \le mn$, $xm + yn + z \in O(mn)$ - the bound on space looks needlessly lax.
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Apr 17, 2017 at 19:44 history edited Raphael
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Dec 19, 2016 at 10:56 history tweeted twitter.com/StackCompSci/status/810801092305027073
Dec 18, 2016 at 18:04 answer added D.W. timeline score: 1
Dec 17, 2016 at 6:28 history edited Yuval Filmus CC BY-SA 3.0
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Dec 16, 2016 at 22:04 history edited Ofer Magen CC BY-SA 3.0
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Dec 16, 2016 at 17:11 comment added Ofer Magen RAM model takes O(1) to define an array with size n (the computer only needs to define the start and end pointers). It takes O(n) to reset it to zeroes. C++ IS a ram model language that's why I brought this example
Dec 16, 2016 at 17:08 comment added Yuval Filmus I don't care much for C and C++. We usually analyze algorithms under the RAM machine model. In this model time cannot be smaller than space. I'm slightly worried that your smart array doesn't really work in $O(1)$ per access.
Dec 16, 2016 at 17:07 history edited Yuval Filmus CC BY-SA 3.0
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Dec 16, 2016 at 17:06 comment added Ofer Magen Sure it can. Creating an array in size n without reseting it takes O(1). That's true for c and c++. Then you can use a very simple data structure to track which cells you've used and which are garbage
Dec 16, 2016 at 17:01 comment added Yuval Filmus Time cannot be smaller than space. You are cheating in some way.
Dec 16, 2016 at 13:22 history asked Ofer Magen CC BY-SA 3.0