#include <QtWidgets>

int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
    app.setLayoutDirection(Qt::RightToLeft);

    auto tableWidget = new QTableWidget;
    tableWidget->setRowCount(5);
    tableWidget->setColumnCount(5);
    for (int row = 0; row < 5; ++row) {
        for (int column = 0; column < 5; ++column) {
            QTableWidgetItem *newItem = new QTableWidgetItem(QString("%1/%2").arg(row).arg(column));
            tableWidget->setItem(row, column, newItem);
        }
    }
    tableWidget->show();
    return app.exec();
}