sorting

问题 I have an array like: $unsorted = Array( "0" =>"3470U11", "1" =>"3470E11", "2" =>"3470S13", "3" =>"3470G11", "4" =>"3470S12", "5" =>"3470S11", "6" =>"3470E12", "7" =>"3470U12", "8" =>"3470G13", "9" =>"3470G12", "10" =>"3470E13", "11" =>"3470U13" ); $sortBy = array('G','D','S','U','E','T','A','L'); I need to sort the array by the substr($value,-3,1) in the order listed in $sortBy so the result becomes like: $sorted = Array( "0" => "3470G11", "1" => "3470G12", "2" => "3470G13", "3" => "3470S11"

问题 I have a PostgreSQL server running on beta and one running locally. On both, I have a table called profile with a column named name of type character varying (255) . I have checked that the dbs have the same values. The weird part is when I do a select on the profile table with order by name asc I am getting different results. So on my local db, profile with name (I)Contractor is first and on beta profile with name 3B is first. So it seems on my local db ( comes before numeric characters and

问题 Basically my java class that I want to sort should be working and we got the code for that. The thing is, when we try to simply just test if our link works(We got a link named "NAME" which should sort the list of people by the name, when clicked), by simply doing the code below. But it doesn't sort it. Our SQL is also correct so does anyone see the problem that we don't? We're fairly new to wicket. public class SimpleView extends SimpleViewPage { //denne er oprettet til brug til når der skal

问题 How does one go about sorting a vector containing custom (i.e. user defined) objects. Probably, standard STL algorithm sort along with a predicate (a function or a function object) which would operate on one of the fields (as a key for sorting) in the custom object should be used. Am I on the right track? 回答1: A simple example using std::sort struct MyStruct { int key; std::string stringValue; MyStruct(int k, const std::string& s) : key(k), stringValue(s) {} }; struct less_than_key { inline

问题 So, I have a class which contains another class object as its data member. I have created an ArrayList based on this prototype. Here is the code: package Stack; import java.io.*; import java.util.*; class Point { int x; int y; Point(int x, int y) { this.x = x; this.y = y; } } public class MergeInterval { Point P; MergeInterval() {} public static void main(String args[]) { ArrayList<Point> arr = new ArrayList<Point>(); // Point p = new Point(6,8); arr.add(new Point(6,8)); arr.add(new Point(1,9

问题 I was given pseudo code for a partition algorithm but I'm not really sure how to implement it. Below is the pseudo code and my implementation. Please let me know if this is correct/explain what it's doing. Right now I have a partial understanding of it but it is not correct. Input: 0.963, 0.003, 0.0251, 0.353, 0.667, 0.838, 0.335, 0.915, 0.796, 0.833, 0.345, 0.871, 0.089, 0.888, 0.701, 0.735 Expected: 0.003 0.0251 0.089 0.335 0.345 0.353 0.667 0.701 0.735 0.796 0.833 0.838 0.871 0.888 0.915 0

问题 I was given pseudo code for a partition algorithm but I'm not really sure how to implement it. Below is the pseudo code and my implementation. Please let me know if this is correct/explain what it's doing. Right now I have a partial understanding of it but it is not correct. Input: 0.963, 0.003, 0.0251, 0.353, 0.667, 0.838, 0.335, 0.915, 0.796, 0.833, 0.345, 0.871, 0.089, 0.888, 0.701, 0.735 Expected: 0.003 0.0251 0.089 0.335 0.345 0.353 0.667 0.701 0.735 0.796 0.833 0.838 0.871 0.888 0.915 0

问题 I'm sorting a CSV::Table object. I have a table with headers ( "date" , "amount" , "source" ) and O(50) entries. Input: data = CSV.table('filename.csv', headers:true) # note headers are :date, :source, :amount amounts = [] data[:amount].each {|i| amounts << i.to_f} data.sort_by! {|row| row[:amount]} # error - not a defined function data = data.sort_by {|row| row[:amount]} # sorted but data is now an array not CSV::Table. would like to retain access to headers I want a bang function to sort

问题 SQL Server table with custom sort has columns: ID (PK, auto-increment), OrderNumber , Col1 , Col2 .. By default an insert trigger copies value from ID to OrderNumber as suggested here. Using some visual interface, user can sort records by incrementing or decrementing OrderNumber values. However, how to deal with records being deleted in the meantime? Example: Say you add records with PK ID: 1,2,3,4,5 - OrderNumber receives same values. Then you delete records with ID=4,ID=5. Next record will

问题 I'm converting a .NET application into Java. The app reads in a file with this format: es-MX jueves verde amarillo blanco llave llover loma cinco domingo rojo but I'm having a trouble figuring out how to sort Spanish according to the traditional sorting of words. In VB.NET, you'd do see this: Dim spainCultureTraditional As CultureInfo = New CultureInfo(&H40A) but I can't find the equivalent traditional sorting locale in Java. The only difference between the two is that in es-MX/es-ES llave