强制随机播放NSMutableArray [英] Force Shuffle NSMutableArray

问题描述

我有一个名为putNumberUsed的NSMutableArray.它包含以下对象@"blah1，@" blah2，@" blah3，@" blah4.我想随机地随机播放这些对象，例如，如果我选择:

I have a NSMutableArray called putNumberUsed. It contains the following objects @"blah1,@"blah2",@"blah3",@"blah4". I want to shuffle these objects randomly so for example if I chose:

 [putNumberUsed objectAtIndex:0] 

它会给我除"blah1"以外的任何东西.我将如何去做呢?以下是我到目前为止使用的代码:

it would give me anything but "blah1". How would I go about doing this? The following is the code I used thus far:

NSMutableArray *putNumbersUsed = [[NSMutableArray alloc] arrayWithObjects:@"blah1",@"blah2",@"blah3",@"blah4",nil];

推荐答案

我认为，您可以为此编写一个循环.请检查以下代码，

I think, You can write a loop for that. Please check the following code,

for (int i = 0; i < putNumberUsed.count; i++) {
    int randomInt1 = arc4random() % [putNumberUsed count];
    int randomInt2 = arc4random() % [putNumberUsed count];
    [putNumberUsed exchangeObjectAtIndex:randomInt1 withObjectAtIndex:randomInt2];
}

这对您可能有用.

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