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2014/10/15 ¤U¤È 10:13:08
iphone Programming Glossary: randomindexdisplaying a random word from a plist http://stackoverflow.com/questions/11405047/displaying-a-random-word-from-a-plist word out of that plist this is my code NSArray randomAddons NSArray arrayWithContentsOfFile @ wordsENG.plist int randomIndex arc4random randomAddons count mainTextController.text username2 stringByAppendingString randomAddons objectAtIndex randomIndex.. arc4random randomAddons count mainTextController.text username2 stringByAppendingString randomAddons objectAtIndex randomIndex This crashes and when I change randomAddons count to 3 it crashes to but I don't know how to correctly code this Can someone.. count if nil dictionaryCount NSArray randomWords randomEntriesDictionary objectForKey keyForArray NSUInteger randomIndex arc4Random dictionaryCount NSString randomWord randomWords objectAtIndex randomIndex else check if file exists and not empty..
Generate non-repeating, no sequential numbers http://stackoverflow.com/questions/2612784/generate-non-repeating-no-sequential-numbers . For example in C# public static void Shuffle T IList T collection Random rng for int i collection.Count 1 i 0 i int randomIndex rng.Next i 1 T tmp collection i collection i collection randomIndex collection randomIndex tmp If you want to produce more.. Random rng for int i collection.Count 1 i 0 i int randomIndex rng.Next i 1 T tmp collection i collection i collection randomIndex collection randomIndex tmp If you want to produce more random numbers e.g. 15 distinct integers within the entire range.. 1 i 0 i int randomIndex rng.Next i 1 T tmp collection i collection i collection randomIndex collection randomIndex tmp If you want to produce more random numbers e.g. 15 distinct integers within the entire range of integers available..
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