Problem with vertical space in Memoir title

Question

I've been struggling with titlingpage and Memoir a few hours, trying to make the document title have equal linespacing between its lines when using \\.

The code is:

\documentclass[10pt,a4paper,oneside]{memoir}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[brazil]{babel} %Hifenização em português

\title{Estudo e modelagem de \\ soluções de otimização discreta para \\ grades horárias}

\newcommand{\subtitle}{
    Trabalho de Conclusão do Curso de\\[-5pt]
    Bacharelado em Ciência da Computação
    }

%flushright alinha a direita
%DoubleSpacing, ver pag. 48 manual memoir
\pretitle {\begin{DoubleSpace} \begin{flushright} \begin{huge} \scshape}

%sffamily = sans serif
%tamanho grande = \Large
\posttitle {\end{huge} \\[1cm] \sffamily \Large \subtitle \end{flushright} \end{DoubleSpace}}

\begin{document}
\begin{titlingpage}
   \maketitle
\end{titlingpage}
\end{document}

The result:

It has a small, but evident, difference in vertical space between lines, could you help me get rid of that ?

Thanks in advance.

EDIT (solved!):

After applying \strut as suggested!

Answer 1

Add \strut on each line. This is a box of zero width and height that extends just above and below the baseline which ensures that each line has the same vertical dimension.

Alternatively you could add a \vphantom so that each line has the same vertical dimension. This has the advantage of producing a tighter box, but the disadvantage that you need to specify paramterts which include the characters with the largest depth and height.

Here is a comparison of boxes with no adjustment, using \strut and \vphantom{}:

\documentclass{article}
\begin{document}
\begin{tabular}{c c c}
 & strut & vphantom\\
    \fbox{g}\fbox{f} &
    \fbox{g\strut}\fbox{f\strut} &  
    \fbox{g\vphantom{f}}\fbox{f\vphantom{g}}
\end{tabular}
\end{document}

Answer 2

There's no huge environment; there's the switch \huge:

\documentclass[10pt,a4paper,oneside]{memoir}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[brazil]{babel}

\title{Estudo e modelagem de \\ soluções de otimização discreta para \\ grades horárias}

\newcommand{\subtitle}{
    Trabalho de Conclusão do Curso de \\
    Bacharelado em Ciência da Computação
    }

\pretitle {\begin{OnehalfSpacing} \begin{flushright}\huge\scshape}
\posttitle {\\[1cm]\normalfont\sffamily\Large \subtitle\end{flushright}\end{OnehalfSpacing}}

\begin{document}
\begin{titlingpage}
   \maketitle
\end{titlingpage}
\end{document}