![]() ![]() Now let's see step-by-step instructions to understand how to use a computer keyboard: Connect the Keyboard. Even more recent gadgets like smartphones and tablets continue to have an on-screen keyboard. When figuring out where the keys of a manual typewriter should be placed, C. Keyboards can have a range of keys, depending on the manufacturer, the operating system they are designed for, and whether they are connected to a desktop computer or are a part of a laptop.Ī "QWERTY" keyboard is the most popular type, named for the keys on the top row of letters. With a keyboard, one may play games, access menus, compose documents, use keystroke shortcuts, and perform several other functions. # Next is recursive sub that does the job.Next → ← prev How to use a computer keyboard?Ī keyboard is primarily used as an input device. I'd be happy to hear whether you like it, or have any other feedback about it! This is my first challenge on StackExchange. 3 if your code fits inside a text message (140 chars) and you post a pic of you sending your code to a friend. 35 if your algorithm is not brute-forcing all possible layouts (I'm looking at Haskell's `permutations' here) Here's a simple example: > echo "jackdawslovemybigsphinxofquartz" | foo.sh There may be multiple possible optimal layouts, you can print any one of them. I don't want to put too many constraints on the output, since that sometimes gives some languages advantages over others so however your language shows arrays is fine, alternatively you can seperate each label with a newline. You can also assume that the input text is reasonably large and every letter is in there at least once, if that helps. You don't need to handle anything other than the lowercase alphabet and can assume that the input consists of only that. The text which you should find the optimal layout for is supplied via stdin. You should only use the buttons 2-9, 1 and 0 are reserved for special symbols. What's the telephone keyboard layout that requires the least amount of button presses, given a specific text? Writing two letters that are typed using the same button requires an additional 2 button presses.A letter is typed by pressing a button n times, where n is the position of where the letter is at on the button's label. ![]() So usually you'd write 'T', then hit space, then hit backspace, and then write 'U', which equals 5 button presses instead of 3. Moreover, you've probably experienced yourselves that typing 2 letters that share the same button is a nuisance - if you want to write "TU", you can't just hit 8 three times, because that would result in 'V'. Letter 'r' is the third letter on button 7 so if you were to type the letter 'r' on a mobile phone, you would press button 7 three times, for 's' you'd press it 4 times, and for 'a' you'd press button 2 once.Ĭonsidering this, putting 'e' after 'd' was probably a bad decision - 'e' is the most commonly used letter in the english alphabet, so, if you were to label button 3 "EDF" instead of "DEF", you would save quite a lot of keystrokes. This is how your average telephone keypad looks like: I argue that switching keyboard layouts is a bad idea, because it can take you months to get up to speed, and when you're finially 5% faster than the rest, you're screwed if you need to type on a computer that isn't your own.Īlso, all these people forget where the real bottleneck in modern communication lies - the telephone keypad. There seems to be this ongoing craze about people tediously learning new keyboard layouts like Dvorak or Neo because it supposedly makes them more productive. ![]()
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