如何从数组中删除重复值

NSMutableArray *uniqueArray = [NSMutableArray array];

[uniqueArray addObjectsFromArray:[[NSSet setWithArray:duplicateArray] allObjects]];

array1=[NSMutableArray arrayWithObjects:@\"1\",@\"2\",@\"2\",@\"3\",@\"3\",@\"3\",@\"2\",@\"5\",@\"6\",@\"6\",nil];
array2=[[NSMutableArray alloc]init];
for (id obj in array1) 
{
    if (![array2 containsObject:obj]) 
    {
        [array2 addObject: obj];
    }
}
NSLog(@\"new array is %@\",array2);

- (NSArray *)arrayWithUniqueObjects {
    NSMutableArray *newArray = [NSMutableArray arrayWithCapacity:[self count]];

    for (id item in self)
        if (NO == [newArray containsObject:item])
            [newArray addObject:item];

    return [NSArray arrayWithArray:newArray];
}

NSSet *set = [NSSet setWithArray:myArray];

// iOS 5.0 and later
NSArray * newArray = [[NSOrderedSet orderedSetWithArray:oldArray] array];

 uniquearray = [[NSSet setWithArray:yourarray] allObjects];