22 lines
449 B
Mathematica
22 lines
449 B
Mathematica
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#import "NSArray+WMFShuffle.h"
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@implementation NSArray (WMFShuffle)
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- (instancetype)wmf_shuffledCopy {
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return [[[self mutableCopy] wmf_shuffle] copy];
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}
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@end
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@implementation NSMutableArray (WMFShuffle)
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- (instancetype)wmf_shuffle {
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for (int i = 0; i < self.count; i++) {
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int swapIndex = arc4random_uniform((uint32_t)self.count);
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[self exchangeObjectAtIndex:i withObjectAtIndex:swapIndex];
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}
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return self;
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}
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@end
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