0|_|_|_|_|_|_|_|

1|_|_|_|_|_|_|_|

2|_|_|_|_|_|_|_|

3|_|_|_|_|_|_|_|

4|_|_|_|_|_|_|X|

5|_|X|X|_|X|_|O|

  0 1 2 3 4 5 6

You’re going to write some code for a win checker. Given a move and the state of the board, determine if the player wins. For simplicity, only worry about a horizontal win(4 successful X in a row).

public boolean isWin(int dropColumn, char value, char[][] state) {
    int level == 0;
    for(int i = 0; i < state.length; i++) {
        if(state[i][dropColumn] != '0') {
            level = i - 1;
            state[level][dropColumn] == value;
        }
    }

    int left = dropColumn, right = dropColumn;
    while(left >= 0 && state[level][left] == value) left--;
    while(right <= state[level].length - 1 && state[level][right] == value) right++;
    if(right - left >= 5) return true;
    return false;
}