Phone Interview

Implement a board game with your favorite languages.

The game has the following rules:

• There are infinite indices in the horizontal directions.
• There are two players, say R and B in general.
• They place their chess pieces in turn.
• If the index the player has already has some chess pieces, then they will just need to place it at the bottom of that particular index.

First, implement a move function so that each player can place a chess piece on the index.

Then, implement a checkWin function to check whether the player has won.

The interview questions are described in the interview process.

A rule to check if a player has won is whether there exists a consecutive sequence of players in a column.