sorting

问题 If you have this PHP array: $args = array( 'a' => array( 'zebra' => 1, ), 'b' => array( 'zebra' => 0, ), 'c' => array( 'zebra' => 0, ), 'd' => array( 'zebra' => 0, ), 'e' => array( 'zebra' => 1, ), ); Is there a way to algorithmically change the order of this array by the "zebra" key value, but instead of being "incremental" (0,0,0,1,1), they would alternate (0,1,0,1,0). So using the example above, the desired finished array will look like this: $ordered_args = array( 'b' => array( 'zebra' =>

问题 If you have this PHP array: $args = array( 'a' => array( 'zebra' => 1, ), 'b' => array( 'zebra' => 0, ), 'c' => array( 'zebra' => 0, ), 'd' => array( 'zebra' => 0, ), 'e' => array( 'zebra' => 1, ), ); Is there a way to algorithmically change the order of this array by the "zebra" key value, but instead of being "incremental" (0,0,0,1,1), they would alternate (0,1,0,1,0). So using the example above, the desired finished array will look like this: $ordered_args = array( 'b' => array( 'zebra' =>

问题 We have an array and need to sort the above array Array ( [0] => stdClass Object ( [id] => 229 [firstname] => ggg [lastname] => fff ) [1] => stdClass Object ( [id] => 230 [firstname] => aaa [lastname] => jjj ) ) I want to sort the array as (Sort by firstname) Array ( [0] => stdClass Object ( [id] => 230 [firstname] => aaa [lastname] => jjj ) [1] => stdClass Object ( [id] => 229 [name] => ggg [lastname] => fff ) ) 回答1: Use usort: usort($ar, function($a, $b) { return strcmp($a->firstname, $b-

问题 I have an ArrayCollection that I'd like to sort by date and then time (in case there's two items with the same date). I've got it sorting by date fine (YYYY/MM/DD) but I can't figure out the time bit, time is in 24 hour format so the code would be basically the same as for the date. This is the code I used for the date sorting, it works fine. import mx.collections.SortField; import mx.collections.Sort; private function sort():void { var dataSortField:SortField = new SortField(); dataSortField

问题 I am just starting in C and have very little clue as to what's going on behind the scenes. I'm learning it on the fly for a data structures class which makes things a bit harder. Update: I've stripped the program back down and am starting with memory and on up. I have the allocate and deallocate functions in there and I'm getting a malloc error: Q1(9882) malloc: * error for object 0x7fff59daec08: pointer being freed was not allocated * set a breakpoint in malloc_error_break to debug Update2

问题 I'm attempting to write a JavaScript function to determine if all letters in a string are in alphabetical order. The following would keep returning "SyntaxError: Unexpected token default" function orderedWords(str) { var s=str.toLowerCase().split(""); for(var i=0; i<s.length; i++) { var default = s[i]; if (s[i+1] >= default) default = s[i+1]; else return false; } return true; } orderedWords("aaabcdefffz"); // true orderedWords("abcdefzjjab"); // false Any help is much appreciated. 回答1:

问题 Hi and thank you very much for your help. I'm new to swift and have thoroughly researched the other answers but they all are not working for me. I have sample data in the format: ["10-24-2015", "124", "Yes", "No", "No", "Yes", "Yes", "NA", "NA"] There are only 3 entries with varying dates and values and they're all in a master array. It's been written to a file already and so I start my code below from a loaded file. All I would like to do is to sort the arrays by date which is the first

问题 Hi and thank you very much for your help. I'm new to swift and have thoroughly researched the other answers but they all are not working for me. I have sample data in the format: ["10-24-2015", "124", "Yes", "No", "No", "Yes", "Yes", "NA", "NA"] There are only 3 entries with varying dates and values and they're all in a master array. It's been written to a file already and so I start my code below from a loaded file. All I would like to do is to sort the arrays by date which is the first

问题 I have I think correctly added reflectionIT framework but it still not works properly it actually renders the paging and filtering actually works but when I use the sorting it doesn't work, neither does the second third or any page besides the first one. public async Task<IActionResult> MenageUsers(string filter, int page = 1,string sortExpression = "UserName") { var qry = _userManager.Users.AsNoTracking().AsQueryable(); if (!string.IsNullOrWhiteSpace(filter)) { qry = qry.Where(p => p

问题 I have I think correctly added reflectionIT framework but it still not works properly it actually renders the paging and filtering actually works but when I use the sorting it doesn't work, neither does the second third or any page besides the first one. public async Task<IActionResult> MenageUsers(string filter, int page = 1,string sortExpression = "UserName") { var qry = _userManager.Users.AsNoTracking().AsQueryable(); if (!string.IsNullOrWhiteSpace(filter)) { qry = qry.Where(p => p