ios -数组排列

//排列数组
- (NSMutableArray *)sortArray:(NSArray *)array{
    NSMutableArray *sortArray = [NSMutableArray array];
    for (ZBHomeDoctorChat *entity in array) {
        [sortArray insertObject:entity atIndex:0];
    }
    NSMutableArray *mArray = [NSMutableArray arrayWithArray:array];
    [mArray sortUsingComparator:^NSComparisonResult(ZBHomeDoctorChat *entity1, ZBHomeDoctorChat *entity2)
     {
         if ([entity1.dialog_timestamp integerValue] > [entity2.dialog_timestamp integerValue])
         {
             return NSOrderedDescending;
         }
         else
         {
             return NSOrderedAscending;
         }
     }];
    //增加根据数组计算单个cell高度，计算完成后刷新tableview，保存对应cell高度，return时取出高度使用，数组数量增加时，高度dic需要相应调整indexPath，避免重新计算已有高度
    
    return mArray;
}