过滤数组

    NSPredicate * filterPredicate = [NSPredicatepredicateWithFormat:@"NOT (SELF IN %@)",self.selectedAssetsArray];

    //过滤数组

    NSArray * reslutFilteredArray = [self.assetsArrayfilteredArrayUsingPredicate:filterPredicate];

    //    NSLog(@"Reslut Filtered Array = %@",reslutFilteredArray);

    NSMutableArray *assent =self.assetsArray;

    [assent removeObjectsInArray:reslutFilteredArray];

过滤相同元素