Computer Science Homework Help

I want To modify my code to give one player 4 places and the other one is 5. What I want is each player has 3 places and if he fill it and did not win it will move the place to another place and the place he was in it will return to number

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using System;

public class Program
{
static int flag = 0;
static int player = 1;
static char[] arr = { ‘0’, ‘1’, ‘2’, ‘3’, ‘4’, ‘5’, ‘6’, ‘7’, ‘8’, ‘9’};
public static void Main(){
int choiceMode;
Console.WriteLine(“Welcome to X O Game. Please select one of the mode to start the game:n 1.Player to Player n 2. Player to computern 3. Computer to comuter”);
choiceMode=int.Parse(Console.ReadLine());
if (choiceMode==1){
playersMode();

}

}

static void Board(){
int x = 1;
Console.WriteLine();
for (int row = 0; row < 3; row++)
{
for (int col = 0; col < 3; col++)
{
Console.Write(arr[x]);
Console.Write(” | “);
x++;
}

Console.WriteLine(“n___|_____|_____”);

}
}

static void playersMode(){
string player1, player2=” “;
Console.WriteLine(“What is the name of player 1?”);
player1 = Console.ReadLine();
Console.WriteLine(” What is the name of player 2?”);
player2 = Console.ReadLine();
Console.WriteLine(“{0} is O and {1} is X.” , player1, player2);
Board();

do{
if (player % 2 == 0)//checking the chance of the player
{
Console.WriteLine(“{0} turns now.” , player1);

}
else{
Console.WriteLine(“{0} turns now.” , player2);
}

int choice = int.Parse(Console.ReadLine());
if (arr[choice] != ‘X’ && arr[choice] != ‘O’){
if (player % 2 == 0) //if chance is of player 2 then mark O else mark X
{
arr[choice] = ‘O’;
player++;

}
else {
arr[choice] = ‘X’;
player++;
}

Board();

}else //If there is any possition where user want to run and that is already marked then show message and load board again
{
Console.WriteLine(“Sorry the row {0} is already marked with {1}”, choice, arr[choice]);
}

}while(flag != 1 && flag != -1);
}}