Recent questions tagged Sorting

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sorting - Sort ISO 8601 dates forward or backwards

I have an array of dates in ISO8601 format and need to sort them. Does anyone have a suggestion for an ... -in to the language. Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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633 views

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sorting - Sort a Dictionary in Swift

I know that this topic has been already discussed but I can't solve looking other answers, so sorry in advance for ... ? How to make it works? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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850 views

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sorting - How can I sort tuples by reverse, yet breaking ties non-reverse? (Python)

If I have a list of tuples: results = [('10', 'Mary'), ('9', 'John'), ('10', 'George'), ('9 ... ... Any help would be much appreciated. Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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702 views

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sorting - How can I sort a Perl hash on values and order the keys correspondingly (in two arrays maybe)?

In Perl, I want to sort the keys of a hash by value, numerically: { five => 5 ten => 10 one => 1 four => 4 } ... : (1,2,3,4) How do I do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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798 views

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sorting - How do we sort faster using unix sort?

We are sorting a 5GB file with 37 fields and sort it with 5 keys. The big file is composed of 1000 files of ... use -m option to merge sort it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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698 views

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sorting - how to sort a scala.collection.Map[java.lang.String, Int] by its values?

How would you sort a scala.collection.Map[java.lang.String, Int] by its values (so on the Int)? What is a short and elegant way to do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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575 views

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sorting - Why does heap sort have a space complexity of O(1)?

I understand that both quick sort and merge sort need O(n) auxiliary space for the temporary sub-arrays that ... still have to be allocated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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612 views

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sorting - Why using pipe for sort (linux command) is slow?

I have a large text file of ~8GB which I need to do some simple filtering and then sort all the rows. I ... un-piped version on my machine. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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575 views

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sorting - How to sort an arraylist of objects java?

So I want an arraylist of objects in java. I have object1.number and object2.number, object3.number, etc... ... position of the array? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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586 views

1 answer

sorting - Count the number of max consecutive "a"'s from a string. Python 3

Say that the user inputs: "daslakndlaaaaajnjndibniaaafijdnfijdnsijfnsdinifaaaaaaaaaaafnnasm" How would you go about finding the ... print () See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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663 views

1 answer

sorting - Java - PriorityQueue vs sorted LinkedList

Which implementation is less "heavy": PriorityQueue or a sorted LinkedList (using a Comparator)? I want to have ... to make some operations. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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712 views

1 answer

sorting - How to sort Properties in java?

I have a Properties object and sometimes I need to add other Properties to it. Properties myBasicProps = this. ... Is there a better way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

545 views

1 answer

sorting - Implementing a custom sSortType and sort function for jQuery dataTables

I'm having a hard time following the instructions on the documentation page. I have a table displaying the average ... a string. Any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

750 views

1 answer

sorting - How to perform a natural sort in php using usort

Does anyone know what the function is to perform a natural order sort using the usort function in PHP on an object. ... ->2 $obj->20 $obj->22 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

615 views

1 answer

sorting - R: Sort multiple columns by another data.frame?

I'm trying to make sense of how to sort one data.frame based on multiple columns in another. This question ... but this replicates the idea... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

839 views

1 answer

sorting - How do I sort a collection of Lists in lexicographic order in Scala?

If A has the Ordered[A] trait, I'd like to be able to have code that works like this val collection: ... can be adapted to others orderings. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

643 views

1 answer

sorting - implementing merge sort in C++

I have studied the theory of the merge sort but don't have any idea of how to implement it in C++. ... the general approach for this? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

781 views

1 answer

sorting - groovy sort with comparator syntax

I am just getting my feet wet with gremlin. I understand that gremlin is based on groovy. I found the documentation ... the { and } mean? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.6k views

1 answer

sorting - Ordering coordinates from top left to bottom right

How can I go about trying to order the points of an irregular array from top left to bottom right, ... advice would be greatly appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

sorting - Grails mapping sort on multiple fields :: Groovy sort on multiple map entries

Stumped on this one. In Grails it seems one cannot define a default sort on multiple columns in domain ... something more concise if possible. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

565 views

1 answer

sorting - How to handle nulls when using Java collection sort

When using Collection.sort in Java what should I return when one of the inner objects is null Example: ... when adding a null validation? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

730 views

1 answer

sorting - SQLite count, group and order by count

I have a table that looks like this: FOO BAR BAZ ----+----+---- foo1 bar1 baz1 foo2 bar3 baz2 foo3 bar1 ... part of a python script.. Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.4k views

1 answer

sorting - Swift sort array of objects based on boolean value

I'm looking for a way to sort a Swift array based on a Boolean value. I've got it working using a cast ... && rightProfile.selected != true }) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

729 views

1 answer

sorting - How to define an Ordering in Scala?

Having val hm: HashMap[org.joda.time.DateTime, MyType] I am trying to get the first and the last ... and explicit options are interesting)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

623 views

1 answer

sorting - Django grouping queryset by first letter?

I have a QuerySet like: items = Item.objects.all() Item has a 'name' field. In the template I want to ... omitted. Does anyone have any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

811 views

1 answer

sorting - Python Pandas slice multiindex by second level index (or any other level)

There are many postings on slicing the level[0] of a multiindex by a range of level1. However, I cannot find ... [0] have the same lengths. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

620 views

1 answer

sorting - How to change the order of lines in a Matlab figure?

Given a plot of three curves in a .fig file I'd like to add another plot (with hold all and plot), ... extract the plot data and re-plotting? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

772 views

1 answer

sorting - Sort strings and numbers in Ruby

I want to sort an array by strings first and then numbers. How do I do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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