character

问题 I'm looking for a simple, easy to understand algorithm to alphabetically sort an array of characters in C. 回答1: characters in C have numeric values that happen to be in order, so you just treat your characters like integers. the C standard library includes a 'qsort' function. Use that ( man qsort on a linux-like system). You might have to convert upper-case letters to lowercase to simplify things, but that's trivial. If you want to understand the quicksort algorithm (that's the one you should

问题 I have the following character date format: "3/1990" "4/1990" "5/1990" ... I tried the following code: data work.temps; set indata; newdate = input(strip(Date), MMYYSw.); rename newdate = date; run; I keep on getting the following error meassage: Informat MMYYSW was not found or could not be loaded. 回答1: You may have to use a different informat to read in the character dates so that SAS can interpret them as numeric (since dates in SAS are actually numeric values), and then format them as

问题 This question already has answers here : How to prevent invalid characters from being typed into input fields (6 answers) Closed 6 years ago . Is it possible to not allow a blank character / space in a input form like below? <input type="text" value="" maxlength="30" name="email" class="formfield w0"> 回答1: Check this Fiddle. Relevant code: $(function() { $('#input1').on('keypress', function(e) { if (e.which == 32){ console.log('Space Detected'); return false; } }); }); <script src="https:/

问题 I'm building a site that uses a lot of emojis. Kind of like the one's you're used to seeing when texting, or on Instagram, Facebook, etc. Examples: 😄 😘 😂 Of course, not all of the emojis are supported by all the browsers out there. When they aren't then they show up as a square with a question mark in the middle like so: Is there anyway in JavaScript that you can tell if a character is supported by the browser, or if it'll show up like the question mark above? 回答1: Browsers do not "support"

问题 I'm building a site that uses a lot of emojis. Kind of like the one's you're used to seeing when texting, or on Instagram, Facebook, etc. Examples: 😄 😘 😂 Of course, not all of the emojis are supported by all the browsers out there. When they aren't then they show up as a square with a question mark in the middle like so: Is there anyway in JavaScript that you can tell if a character is supported by the browser, or if it'll show up like the question mark above? 回答1: Browsers do not "support"

问题 Oracle Live SQL. I am trying to insert records for a table. The table goes through just fine but in each line of records, I am apparently entering some invalid characters. Of course, this is an extremely vague error. I don't know what's wrong. I've tried changing the date values, tried removing values individually, but no matter what I get the same error. CREATE TABLE Employee_Information ( employee varchar2(25) NOT NULL, Address varchar2(50) NOT NULL, Phone_number CHAR(10) NOT NULL, Hire

问题 Oracle Live SQL. I am trying to insert records for a table. The table goes through just fine but in each line of records, I am apparently entering some invalid characters. Of course, this is an extremely vague error. I don't know what's wrong. I've tried changing the date values, tried removing values individually, but no matter what I get the same error. CREATE TABLE Employee_Information ( employee varchar2(25) NOT NULL, Address varchar2(50) NOT NULL, Phone_number CHAR(10) NOT NULL, Hire

问题 I'm not really sure how to express it but I'm searching for unicode letters which are more than one visual latin letter. I found this in Word so far: DZ Dz dz NJ Lj LJ Nj nj Any others? 回答1: Sorry about the formatting because it's hard to map long characters to monospace fonts' letter widths. It would be better if it's in a picture but then there's no possibility to copy and zoom infinitely Digraphs +-------------+----------+-----------------------+-------------------------+ | Two Glyphs | Digraph |

问题 I am trying to add a menu to my game for a very long time but it doesn't show up. There is a screen which comes up, however it is empty and only has words but no buttons, so no matter where I click, it takes me to the same page. Like a screen shows but the buttons don't appear and I am not sure why. How do I add a button for the options? background = pygame.image.load('background.png') backgroundX = 0 backgroundX2 = background.get_width() homeScreen = pygame.image.load('home_screen.png')

问题 How can I check if input is a letter or character in Python? Input should be amount of numbers user wants to check. Then program should check if input given by user belongs to tribonacci sequence (0,1,2 are given in task) and in case user enter something different than integer, program should continue to run. n = int(input("How many numbers do you want to check:")) x = 0 def tribonnaci(n): sequence = (0, 1, 2, 3) a, b, c, d = sequence while n > d: d = a + b + c a = b b = c c = d return d