string

问题 Now I try to solve task about finding length the longest substring that consists of the same char. For example, I have a string yyuuufhvksoooo , then I will get result 4 . I wrote this code, here it is: function longRepeat(line) { if (line.length > 0) { var count = 1; var max = 1; } for (let i = 0; i < line.length - 1; i++) { if (line[i] == line[i + 1]) { count++; if (count > max) max = count; } else { count = 1; } } return max; } It is work. But when I test this code with big string,

问题 Now I try to solve task about finding length the longest substring that consists of the same char. For example, I have a string yyuuufhvksoooo , then I will get result 4 . I wrote this code, here it is: function longRepeat(line) { if (line.length > 0) { var count = 1; var max = 1; } for (let i = 0; i < line.length - 1; i++) { if (line[i] == line[i + 1]) { count++; if (count > max) max = count; } else { count = 1; } } return max; } It is work. But when I test this code with big string,

问题 I am using re.sub in order to forcibly convert a "bad" string into a "valid" string via regex. I am struggling with creating the right regex that will parse a string and "remove the bad parts". Specifically, I would like to force a string to be all alphabetical, and allow for a single space between words. Any values that disagree with this rule I would like to substitute with ''. This includes multiple spaces. Any help would be appreciated! import re list_of_strings = ["3He2l2lo Wo45rld!",

问题 There are too much confusion about \n and \r. There are lot's of questions in stack about differences between \n and \r. In a nut shell My confusions/questions are: Is \r\n equal to \n\r? Is \r\n cause to two new lines? Is \r cause a new line in output? How can I replace all new lines with <BR> tag in PHP? Not all strings has \r or \n explicitly . Suppose I have a textarea and user inputs some characters including Enter of keyboard. No \r or \n is entered but new lines exist. How to remove

问题 There are a few ways to get the list of all Unicode characters' names: for example using Python module unicodedata, as explained in List of unicode character names, or using the website: https://unicode.org/charts/charindex.html but here it's incomplete, and you have to open and parse PDF to find the names. But what is the official source / repository of all Unicode character names? (such that if a new character is added, the list is updated, so I'm looking for the initial source for these

问题 I have a problem with creating a recursive array with PHP. I need to format this string to a multidimensional array with the dot-separated elements indicating multiple levels of array keys. $str = "code.engine,max_int.4,user.pre.3,user.data.4"; The output for this example would be: $str = array( "code" => "engine", "max_int" => 4, "user" => array( "pre" => 3, "data" => 4 ) ); I will start with an explode function, but I don't know how to sort it from there, or how to finish the foreach. 回答1:

问题 how can i find the last visible character in a Java String? I'd like to remove all line breaks and other invisible characters from a Java String Kind Regards, Tord 回答1: You can use the trim() method of the String class for removing trailing (and leading) white space and line breaks: String trimmed = original.trim(); 回答2: string_variable.replaceAll("\\p{C}", "?"); This will replace all non-printable characters. Where p{C} selects the invisible control characters and unused code points. 来源：

问题 how can i find the last visible character in a Java String? I'd like to remove all line breaks and other invisible characters from a Java String Kind Regards, Tord 回答1: You can use the trim() method of the String class for removing trailing (and leading) white space and line breaks: String trimmed = original.trim(); 回答2: string_variable.replaceAll("\\p{C}", "?"); This will replace all non-printable characters. Where p{C} selects the invisible control characters and unused code points. 来源：

问题 If I have a piece of code that works like this: $i = 0; $names = explode(",", $userInput); foreach($names as $name) { $i++; } It works perfectly, provided the user has placed a comma after each name entered into the html textarea this comes from. But I want to make it more user friendly and change it so that each name can be entered on a new line and it'll count how many lines the user has entered to determine the number of names entered into the field. So I tried: $i = 0; $names = explode("

问题 I want to convert the following String flString="view1:filedname11,view1:filedname12,view2:fieldname21"; to a Map<String,Set<String>> to get the key/value as below: view1=[filedname11,filedname12] view2=[fieldname21] I want to use Java 8 streams. I tried Arrays.stream(tokens) .map(a -> a.split(":")) .collect(Collectors.groupingBy( a -> a[0], Collectors.toList())); However the keys are also getting added to the value list. 回答1: You should use a Collectors::mapping to map the array to an