#3815

Design Auction System

specialist · 995 · lc medium +32 · 41.9% accepted · 79 likes · top 23%

Description

Design a real-time bidding platform where each bid records a userId, an itemId, and a bidAmount. Implement AuctionSystem() with: addBid(userId, itemId, bidAmount) — place or overwrite a bid; updateBid(userId, itemId, newAmount) — change an existing bid (guaranteed to exist); removeBid(userId, itemId) — delete a bid (guaranteed to exist); getHighestBidder(itemId) — return the userId with the highest bid, breaking ties by largest userId, or -1 if no bids.

Code

class AuctionSystem:

    def __init__(self):
        

    def addBid(self, userId: int, itemId: int, bidAmount: int) -> None:
        

    def updateBid(self, userId: int, itemId: int, newAmount: int) -> None:
        

    def removeBid(self, userId: int, itemId: int) -> None:
        

    def getHighestBidder(self, itemId: int) -> int:
        


# Your AuctionSystem object will be instantiated and called as such:
# obj = AuctionSystem()
# obj.addBid(userId,itemId,bidAmount)
# obj.updateBid(userId,itemId,newAmount)
# obj.removeBid(userId,itemId)
# param_4 = obj.getHighestBidder(itemId)

class AuctionSystem:

    def __init__(self):
        

    def addBid(self, userId: int, itemId: int, bidAmount: int) -> None:
        

    def updateBid(self, userId: int, itemId: int, newAmount: int) -> None:
        

    def removeBid(self, userId: int, itemId: int) -> None:
        

    def getHighestBidder(self, itemId: int) -> int:
        


# Your AuctionSystem object will be instantiated and called as such:
# obj = AuctionSystem()
# obj.addBid(userId,itemId,bidAmount)
# obj.updateBid(userId,itemId,newAmount)
# obj.removeBid(userId,itemId)
# param_4 = obj.getHighestBidder(itemId)