timsort

In which version of JDK7, MergeSort was replaced with TimSort in Collections.sort method?

由 你说的曾经没有我的故事 提交于 2019-12-12 04:47:18
问题 I searched and couldn't find in which version the TimSort actually replaced the MergeSort in collections.sort() method. If anyone can let me know the exact version for JDK7 it would be a great help. 回答1: TimSort has been used in Java 7 right from the release. To be more specific, it has been added in Java 7, beta 70. It might be worth noting that this is still a modified merge sort, just having more modifications being more efficient than the modified merge sort that has been used in previous

How to use Timsort in javascript? [closed]

由 泄露秘密 提交于 2019-12-09 04:59:21
问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . How can I use Timsort in Javascript format? there are a lot of documentations in Java, Python and C++, is it doable in JS also? 回答1:

When does TimSort complain about broken comparator?

由 给你一囗甜甜゛ 提交于 2019-12-09 00:09:45
问题 Java 7 changed the sorting algorithm such that it throws an java.lang.IllegalArgumentException: "Comparison method violates its general contract!" in some cases when the used comparator is buggy. Is it possible to tell what kind of bug in the comparator causes this? In my experiments it did not matter if x != x , it also did not matter if x < y and y < z but z < x , but it did matter if x = y and y = z but x < z for some values x, y, z. Is this generally so? (If there were a general rule to

How to use Timsort in javascript? [closed]

由 不羁的心 提交于 2019-12-03 03:21:46
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. How can I use Timsort in Javascript format? there are a lot of documentations in Java, Python and C++, is it doable in JS also? Timsort Javascript Array.prototype.timsort = function(comp){ var global_a=this var MIN_MERGE = 32; var MIN_GALLOP = 7 var runBase=

Grokking Timsort

由 五迷三道 提交于 2019-11-28 20:01:11
问题 There's a (relatively) new sort on the block called Timsort. It's been used as Python's list.sort, and is now going to be the new Array.sort in Java 7. There's some documentation and a tiny Wikipedia article describing the high-level properties of the sort and some low-level performance evaluations, but I was curious if anybody can provide some pseudocode to illustrate what Timsort is doing, exactly, and what are the key things that make it zippy. (Esp. with regard to the cited paper,

Comparison between timsort and quicksort

由 ☆樱花仙子☆ 提交于 2019-11-28 17:43:55
Why is it that I mostly hear about quicksort being the fastest overall sorting algorithm when timsort (according to wikipedia) seem to perform much better? Google didn't seem to turn up any kind of comparison. Chang TimSort is highly optimization mergesort, it is stable and faster than old mergesort. when comparing with quicksort, it has two advantages: It is unbelievably fast for nearly sorted data sequence (including reverse sorted data); The worst case is still O(N*LOG(N)). To be honest, I don't think #1 is a advantage, but it did impress me. Here are QuickSort's advantages QuickSort is

Comparison between timsort and quicksort

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-11-27 19:58:56
问题 Why is it that I mostly hear about quicksort being the fastest overall sorting algorithm when timsort (according to wikipedia) seem to perform much better? Google didn't seem to turn up any kind of comparison. 回答1: TimSort is highly optimization mergesort, it is stable and faster than old mergesort. when comparing with quicksort, it has two advantages: It is unbelievably fast for nearly sorted data sequence (including reverse sorted data); The worst case is still O(N*LOG(N)). To be honest, I

“Comparison method violates its general contract!” - TimSort and GridLayout

由 血红的双手。 提交于 2019-11-26 16:11:02
I made a color palette with a jPanel and a JLabel array in it. At first it worked well, but then i put some other jLabels out of the JPanel and added them some events. Now I keep getting this error: Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.util.TimSort.mergeLo(TimSort.java:747) at java.util.TimSort.mergeAt(TimSort.java:483) at java.util.TimSort.mergeCollapse(TimSort.java:410) at java.util.TimSort.sort(TimSort.java:214) at java.util.TimSort.sort(TimSort.java:173) at java.util.Arrays.sort(Arrays.java:659)

“Comparison method violates its general contract!” - TimSort and GridLayout

由 放肆的年华 提交于 2019-11-26 04:45:11
问题 I made a color palette with a jPanel and a JLabel array in it. At first it worked well, but then i put some other jLabels out of the JPanel and added them some events. Now I keep getting this error: Exception in thread \"AWT-EventQueue-0\" java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.util.TimSort.mergeLo(TimSort.java:747) at java.util.TimSort.mergeAt(TimSort.java:483) at java.util.TimSort.mergeCollapse(TimSort.java:410) at java.util.TimSort.sort

Is Java 7 using Tim Sort for the Method Arrays.Sort?

由 ＊爱你＆永不变心＊ 提交于 2019-11-26 04:17:16
问题 I can\'t find the documentation of Java 7, I can only find about the Java 6, which is still quick or merge. Does anyone know how to find the documentation of the method Arrays.sort in Java 7? 回答1: Java 7 uses Dual-Pivot Quicksort for primitives and TimSort for objects. According to the Java 7 API doc for primitives: Implementation note: The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on many
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