NSArray *array = /* loaded from file */;
 array = [array sortedArrayUsingSelector: @selector(compare:)];

NSArray *sorted = [[[array sortedArrayUsingSelector:@selector(compare:)] reverseObjectEnumerator] allObjects];

];

    NSArray *sortDescriptors = @[sortIdClient];
    NSArray *arrTemp = [self.allCampaignsList sortedArrayUsingDescriptors:sortDescriptors];