Post_90.1.java

    private String checkColumns() {
        for (int i = 0; i < board.getMatrix().length; i++) {
            String value = board.getMatrix()[i][0];
            if (value == "*") {
                continue;
            }
            for (int j = 1; j < board.getMatrix()[i].length; j++) {
                String currentSpace = board.getMatrix()[i][j];
                if (currentSpace == "*" || !currentSpace.equals(value)) {
                    break;
                }
                if (j == board.getMatrix()[i].length - 1) {
                    return value;
                }
            }
        }
        return "";
    }

    private String checkRows() {
        for (int row = 0; row < board.getMatrix().length; row++) {
            String value = board.getMatrix()[1][row];
            if (value == "*") {
                continue;
            }
            for (int column = 0; column < board.getMatrix()[row].length; column++) {
                String currentSpace = board.getMatrix()[column][row];
                if (currentSpace == "*" || !currentSpace.equals(value)) {
                    break;
                }
                if (column == board.getMatrix()[row].length - 1) {
                    return value;
                }

            }
        }
        return "";
    }

    private String checkFirstDiagonal() {
        for (int row = 0; row < board.getMatrix().length; row++) {
            String value = board.getMatrix()[board.getMatrix().length - 1][row];
            if (value == "*") {
                continue;
            }
            for (int column = 1; column < board.getMatrix().length; column++) {
                String currentSpace = board.getMatrix()[column][board.getMatrix().length - column - 1];
                if (currentSpace == "*" || !currentSpace.equals(value)) {
                    break;
                }
                if (column == board.getMatrix().length - 1) {
                    return value;
                }
            }
        }
        return "";
    }

    private String checkSecondDiagonal() {
        for (int row = 1; row < board.getMatrix().length; row++) {
            String value = board.getMatrix()[0][0];
            if (value == "*") {
                continue;
            }
            for (int column = 1; column < board.getMatrix().length; column++) {
                String currentSpace = board.getMatrix()[row][row];
                if (currentSpace == "*" || !currentSpace.equals(value)) {
                    break;
                }
                if (column == board.getMatrix().length - 1) {
                    return value;
                }
            }
        }
        return "";
    }