character

问题 I have a string with repeated letters. I want letters that are repeated more than once to show only once. For instance I have a string aaabbbccc i want the result to be abc. so far my function works like this: if the letter doesn't repeat, it's not shown if it's repeated once, it's show only once (i.e. aa shows a) if it's repeated twice, shows all (i.e. aaa shows aaa) if it's repeated 3 times, it shows 6 (if aaaa it shows aaaaaa) function unique_char(string) { var unique = ''; var count = 0;

问题 I have the two big and small list. I want to know which of the elements in big list are not in smaller list. The list consists of property ([1] "character" "vector" "data.frameRowLabels" [4] "SuperClassMethod" Here is small example and error I am getting A <- c("A", "B", "C", "D") B <- c("A", "B", "C") new <- A[!B] Error in !B : invalid argument type The expected output is new <- c("D") 回答1: Look at help("%in%") - there's an example all the way at the bottom of that page that addresses this

问题 This question already has answers here : How to generate a random integer number from within a range (11 answers) Closed 6 years ago . I'm new to programming in C and have been given the task of creating a 2D array that stores random letters from A-Z using the random () function. I know how to do random numbers. nextvalue = random ( ) % 10001; but am unsure on how exactly to create a random character. I know that you can use ASCII to create a random character using the range 65 - 90 in the

问题 I am working on a story app.Where We need to provide quizes. Now I am having a story and there are some blanks or hidden words over that story. Whenever I click over that hidden word,I will get the 4 options to answer that. I tried by placing button over the words,But that would be only when I am using some static position. I just want to know how can I get the frame of that word,which I need to hide ,so that I can place some button over that and can hide this. You can see the image below..

问题 How would I get the first character from the first string in a list in Python? It seems that I could use mylist[0][1:] but that does not give me the first character. >>> mylist = [] >>> mylist.append("asdf") >>> mylist.append("jkl;") >>> mylist[0][1:] 'sdf' 回答1: You almost had it right. The simplest way is mylist[0][0] # get the first character from the first item in the list but mylist[0][:1] # get up to the first character in the first item in the list would also work. You want to end after

问题 I'm trying to get Thai characters from a website. I've tried: $rawChapter = file_get_contents("URL"); $rawChapter = mb_convert_encoding($rawChapter, 'UTF-8', mb_detect_encoding($rawChapter, 'UTF-8, ISO-8859-1', true)); When I do this then the characters come back like: ¡ÅѺ˹éÒáá¾ÃФÑÁÀÕÃìÀÒÉÒä·Â©ºÑº But if I take the source of the page I'm trying to load and save that into my own .htm file on my localhost as a utf8 file then it loads the Thai characters correctly. Only when I try to load it

问题 I have a list with elements that have unnecessary (non-alphanumeric) characters at the beginning or end of each string. Ex. 'cats--' I want to get rid of the -- I tried: for i in thelist: newlist.append(i.strip('\W')) That didn't work. Any suggestions. 回答1: def strip_nonalnum(word): if not word: return word # nothing to strip for start, c in enumerate(word): if c.isalnum(): break for end, c in enumerate(word[::-1]): if c.isalnum(): break return word[start:len(word) - end] print([strip

问题 I get UTF-8 character bytes as Latin-1 character bytes. Examples contain Latin 1 character bytes ----- UTF-8 bytes äännök ----- äännök Ã<U+0084>Ã<U+0084>NÃ<U+0096>S ----- äänös and my session info > sessionInfo() R version 3.3.2 (2016-10-31) Platform: x86_64-apple-darwin13.4.0 (64-bit) Running under: macOS Sierra 10.12.1 locale: [1] C/UTF-8/C/C/C/C attached base packages: [1] stats graphics grDevices utils datasets methods base So what kind of settings do I need in R to handle umlauts

问题 Suppose I have a string with the text: "THIS IS A TEST". How would I split it every n characters? So if n was 10, then it would display: "THIS IS A " "TEST" ..you get the idea. The reason is because I want to split a very big line into smaller lines, sort of like word wrap. I think I can use string.Split() for this, but I have no idea how and I'm confused. Any help would be appreciated. 回答1: Let's borrow an implementation from my answer on code review. This inserts a line break every n

问题 What would be the best way to find the index of a specified character in a list containing multiple characters? 回答1: >>> ['a', 'b'].index('b') 1 If the list is already sorted, you can of course do better than linear search. 回答2: Probably the index method? a = ["a", "b", "c", "d", "e"] print a.index("c") 回答3: As suggested by others, you can use index . Other than that you can use enumerate to get both the index as well as the character for position,char in enumerate(['a','b','c','d']): if char