sorting

问题 I am attempting to work through Hadley Wickham's R for Data Science and have gotten tripped up on the following question: "How could you use arrange() to sort all missing values to the start? (Hint: use is.na())" I am using the flights dataset included in the nycflights13 package. Given that arrange() sorts all unknown values to the bottom of the dataframe, I am not sure how one would do the opposite across the missing values of all variables. I realize that this question can be answered with

问题 I want to sort members by name in the source code. Is there any easy way to do it? I'm using NetBeans, but if there is another editor that can do that, just tell me the name of it. 回答1: In Netbeans 8.0.1: Tools -> Options -> Editor -> Formatting -> Category: Ordering Then: Source -> Organize Members 回答2: Eclipse can do it. 回答3: This is implemented in Netbeans 7.3: http://netbeans.org/bugzilla/show_bug.cgi?id=212528 回答4: As @PaulCroarkin said - use eclipse, Or you can use Jalopy as part of

问题 I want to sort members by name in the source code. Is there any easy way to do it? I'm using NetBeans, but if there is another editor that can do that, just tell me the name of it. 回答1: In Netbeans 8.0.1: Tools -> Options -> Editor -> Formatting -> Category: Ordering Then: Source -> Organize Members 回答2: Eclipse can do it. 回答3: This is implemented in Netbeans 7.3: http://netbeans.org/bugzilla/show_bug.cgi?id=212528 回答4: As @PaulCroarkin said - use eclipse, Or you can use Jalopy as part of

问题 I have a problem with sorting NSTableColumn contents. In my NSTableView there are three columns: File, Size, Path. The contents are stored in NSMutableArray. Each object in this array is a NSDictionary containing three keys: file, size and path - value for each is a NSString. In Interface Builder, in each Table Column's attributes I can choose sorting options: Selector: IB entered "compare:" which I think is ok, because I compare NSStrings. Sort Key - and that's the problem I think - I don't

问题 Following is my code used to sort a list with predefined order. Defined order is mentioned in itemsSorted list. final List<String> itemsSorted = myMethod.getSortedItems(); List<String> plainItemList = myMethod2.getAllItems(); final Comparator<String> comparator = new Comparator<String>() { public int compare(String str1, String str2) { return orderOf(str1) - orderOf(str2); } private int orderOf(String name) { return ((itemsSorted)).indexOf(name); } }; Collections.sort(plainItemList,

问题 I have a multidimensional associative array with a type property. It looks like this: $data = array( array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "B"), array( "name" => "SomeName", "type" => "B"), array( "name" => "SomeName", "type" => "B"), array( "name" => "SomeName", "type"

问题 I have a multidimensional associative array with a type property. It looks like this: $data = array( array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "A"), array( "name" => "SomeName", "type" => "B"), array( "name" => "SomeName", "type" => "B"), array( "name" => "SomeName", "type" => "B"), array( "name" => "SomeName", "type"

问题 Please don't think this is a repeat of the "Sorting alphanumeric data in unix" question... I looked at the other answers, and think my case is a bit different! I have data like this: A 192 D 112 D 188 C 091 A 281 B 919 ...And I want to sort first column 1 (alphabetically), and then by column 2 (numerically). I tried using: sort -n -k1,2 ...But this gave me correctly sorted for the first field, but then the wrong sorting for the second field (1000,1002,1003,10,1 ... instead of 1,10,1000,1002

问题 Please don't think this is a repeat of the "Sorting alphanumeric data in unix" question... I looked at the other answers, and think my case is a bit different! I have data like this: A 192 D 112 D 188 C 091 A 281 B 919 ...And I want to sort first column 1 (alphabetically), and then by column 2 (numerically). I tried using: sort -n -k1,2 ...But this gave me correctly sorted for the first field, but then the wrong sorting for the second field (1000,1002,1003,10,1 ... instead of 1,10,1000,1002

问题 Please don't think this is a repeat of the "Sorting alphanumeric data in unix" question... I looked at the other answers, and think my case is a bit different! I have data like this: A 192 D 112 D 188 C 091 A 281 B 919 ...And I want to sort first column 1 (alphabetically), and then by column 2 (numerically). I tried using: sort -n -k1,2 ...But this gave me correctly sorted for the first field, but then the wrong sorting for the second field (1000,1002,1003,10,1 ... instead of 1,10,1000,1002