Choosing what exercises to do is hard for a swimmer. Not everything obviously translates from the weight room to the pool.
As a sprinter you need to train the same way in the weight room as you would in the pool. A big misconception that sprinters have is that they have to lift heavy weights all the time to get strong. That would be like doing all resistance training in the pool, which nobody does. Most sprint swimming programs go through different phases of training during a season. Typically they do a variety of endurance, power and speed work. The same thing needs to be done in the weight room.
To get the most out of training, you need to change what you do every so often because your body gets used to the same thing over and over again.