nearly all the altcoins have copied bitcoin one way or another so they all have all bitcoin's features including its block reward halving. you have to be more specific about your second part of the question if you want any particular coin that has halving.
if you are looking for halvings from a speculative perspective then you must know that most of the times there is no price rise in altcoins that have a halving because they get dumped by the miners because of the halving and can't get hyped up either.
I really wonder why most people are always eager to see halving of coins as if it will reward everyone generally and make their investment multi-ply beyond imagination, I don’t still understand the concept of it making the price of the coin hike when all we need for a coin to shoot up is either adoption, new investors or whale’s pump.
Seems to me that halving benefits more of miners than investors. If miners dump the coin, then it will affect investors more. Well, I don’t so much rely on the halving that much, except there will be a coincidence and maybe another factor will come then that will turn market around. In
technically halving effect is like this:
(assuming it is bitcoin) before halving the miners are earning 1800
BTC per day and lets say 70% of it is being sold on the market (just an assumption) so that is a daily sale of 1260
BTC or nearly $10 million per day.
after halving miners will be earning 900
BTC per day and if the same percentage is sold on the market that would be 630
BTC or nearly $5 million per day.
so when the amount sold on the market is reduced by half, the price should react to it.
plus we have bitcoin adoption increasing so the demand is rising. the result is an assured price rise.
that is technical part. but the market doesn't work on technicality. it works on speculation specially when it is short term. so price spike occurs BEFORE the halving and there is a spike.
then people see this pattern in bitcoin and extrapolate that data to their altcoins. the hype alone can cause altcoin pumps similar to bitcoin halving hype spike. but the difference would be the lack of adoption of altocins (the demand is not there) so the price rise can not be sustained and it gets dumped back down.