lib/Mi manual de algoritmos/version_actual/src/java/maps_sets.tex

   1 % Generator: GNU source-highlight, by Lorenzo Bettini, http://www.gnu.org/software/src-highlite
   2
   3 {\ttfamily \raggedright {
   4 \noindent
   5 \mbox{}\textbf{\textcolor{RoyalBlue}{import}}\ java\textcolor{BrickRed}{.}util\textcolor{BrickRed}{.*;} \\
   6 \mbox{} \\
   7 \mbox{}\textbf{\textcolor{Blue}{public}}\ \textbf{\textcolor{Blue}{class}}\ Ejemplo\ \textcolor{Red}{\{} \\
   8 \mbox{}\ \ \ \ \textbf{\textcolor{Blue}{public}}\ \textbf{\textcolor{Blue}{static}}\ \textcolor{ForestGreen}{void}\ \textbf{\textcolor{Black}{main}}\textcolor{BrickRed}{(}String\textcolor{BrickRed}{[]}\ args\textcolor{BrickRed}{)}\textcolor{Red}{\{} \\
   9 \mbox{}\ \ \ \ \ \ \ \ \textit{\textcolor{Brown}{/*}} \\
  10 \mbox{}\textit{\textcolor{Brown}{\ \ \ \ \ \ \ \ \ *\ Mapas}} \\
  11 \mbox{}\textit{\textcolor{Brown}{\ \ \ \ \ \ \ \ \ *\ Tanto\ el\ HashMap\ como\ el\ TreeMap\ funcionan,\ pero\ tienen\ diferentes\ detalles}} \\
  12 \mbox{}\textit{\textcolor{Brown}{\ \ \ \ \ \ \ \ \ *\ y\ difieren\ en\ algunos\ métodos\ (Ver\ API).}} \\
  13 \mbox{}\textit{\textcolor{Brown}{\ \ \ \ \ \ \ \ \ */}} \\
  14 \mbox{}\ \ \ \ \ \ \ \ System\textcolor{BrickRed}{.}out\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{println}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}Maps"{}}}\textcolor{BrickRed}{);} \\
  15 \mbox{}\ \ \ \ \ \ \ \ \textit{\textcolor{Brown}{//TreeMap$<$String,\ Integer$>$\ m\ =\ new\ TreeMap$<$String,\ Integer$>$();}} \\
  16 \mbox{}\ \ \ \ \ \ \ \ HashMap\textcolor{BrickRed}{$<$}String\textcolor{BrickRed}{,}\ Integer\textcolor{BrickRed}{$>$}\ m\ \textcolor{BrickRed}{=}\ \textbf{\textcolor{Blue}{new}}\ HashMap\textcolor{BrickRed}{$<$}String\textcolor{BrickRed}{,}\ Integer\textcolor{BrickRed}{$>$();} \\
  17 \mbox{}\ \ \ \ \ \ \ \ m\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{put}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}Hola"{}}}\textcolor{BrickRed}{,}\ \textbf{\textcolor{Blue}{new}}\ \textbf{\textcolor{Black}{Integer}}\textcolor{BrickRed}{(}\textcolor{Purple}{465}\textcolor{BrickRed}{));} \\
  18 \mbox{}\ \ \ \ \ \ \ \ System\textcolor{BrickRed}{.}out\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{println}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}m.size()\ =\ "{}}}\ \textcolor{BrickRed}{+}\ m\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{size}}\textcolor{BrickRed}{());} \\
  19 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  \\
  20 \mbox{}\ \ \ \ \ \ \ \ \textbf{\textcolor{Blue}{if}}\ \textcolor{BrickRed}{(}m\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{containsKey}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}Hola"{}}}\textcolor{BrickRed}{))}\textcolor{Red}{\{} \\
  21 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ System\textcolor{BrickRed}{.}out\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{println}}\textcolor{BrickRed}{(}m\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{get}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}Hola"{}}}\textcolor{BrickRed}{));} \\
  22 \mbox{}\ \ \ \ \ \ \ \ \textcolor{Red}{\}} \\
  23 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  \\
  24 \mbox{}\ \ \ \ \ \ \ \ System\textcolor{BrickRed}{.}out\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{println}}\textcolor{BrickRed}{(}m\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{get}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}Objeto\ inexistente"{}}}\textcolor{BrickRed}{));} \\
  25 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  \\
  26 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  \\
  27 \mbox{}\ \ \ \ \ \ \ \ \textit{\textcolor{Brown}{/*}} \\
  28 \mbox{}\textit{\textcolor{Brown}{\ \ \ \ \ \ \ \ \ *\ Sets}} \\
  29 \mbox{}\textit{\textcolor{Brown}{\ \ \ \ \ \ \ \ \ *\ La\ misma\ diferencia\ entre\ TreeSet\ y\ HashSet.}} \\
  30 \mbox{}\textit{\textcolor{Brown}{\ \ \ \ \ \ \ \ \ */}} \\
  31 \mbox{}\ \ \ \ \ \ \ \ System\textcolor{BrickRed}{.}out\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{println}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}}}\texttt{\textcolor{CarnationPink}{\textbackslash{}n}}\texttt{\textcolor{Red}{Sets"{}}}\textcolor{BrickRed}{);} \\
  32 \mbox{}\ \ \ \ \ \ \ \ \textit{\textcolor{Brown}{/*}} \\
  33 \mbox{}\textit{\textcolor{Brown}{\ \ \ \ \ \ \ \ \ *\ *OJO:\ El\ HashSet\ no\ está\ en\ orden,\ el\ TreeSet\ sí.}} \\
  34 \mbox{}\textit{\textcolor{Brown}{\ \ \ \ \ \ \ \ \ */}} \\
  35 \mbox{}\ \ \ \ \ \ \ \ \textit{\textcolor{Brown}{//HashSet$<$Integer$>$\ s\ =\ new\ HashSet$<$Integer$>$();}} \\
  36 \mbox{}\ \ \ \ \ \ \ \ TreeSet\textcolor{BrickRed}{$<$}Integer\textcolor{BrickRed}{$>$}\ s\ \textcolor{BrickRed}{=}\ \textbf{\textcolor{Blue}{new}}\ TreeSet\textcolor{BrickRed}{$<$}Integer\textcolor{BrickRed}{$>$();} \\
  37 \mbox{}\ \ \ \ \ \ \ \ s\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{add}}\textcolor{BrickRed}{(}\textcolor{Purple}{3576}\textcolor{BrickRed}{);}\ s\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{add}}\textcolor{BrickRed}{(}\textbf{\textcolor{Blue}{new}}\ \textbf{\textcolor{Black}{Integer}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}54"{}}}\textcolor{BrickRed}{));}\ s\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{add}}\textcolor{BrickRed}{(}\textbf{\textcolor{Blue}{new}}\ \textbf{\textcolor{Black}{Integer}}\textcolor{BrickRed}{(}\textcolor{Purple}{1000000007}\textcolor{BrickRed}{));} \\
  38 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  \\
  39 \mbox{}\ \ \ \ \ \ \ \ \textbf{\textcolor{Blue}{if}}\ \textcolor{BrickRed}{(}s\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{contains}}\textcolor{BrickRed}{(}\textcolor{Purple}{54}\textcolor{BrickRed}{))}\textcolor{Red}{\{} \\
  40 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ System\textcolor{BrickRed}{.}out\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{println}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}54\ presente."{}}}\textcolor{BrickRed}{);} \\
  41 \mbox{}\ \ \ \ \ \ \ \ \textcolor{Red}{\}} \\
  42 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  \\
  43 \mbox{}\ \ \ \ \ \ \ \ \textbf{\textcolor{Blue}{if}}\ \textcolor{BrickRed}{(}s\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{isEmpty}}\textcolor{BrickRed}{()}\ \textcolor{BrickRed}{==}\ \textbf{\textcolor{Blue}{false}}\textcolor{BrickRed}{)}\textcolor{Red}{\{} \\
  44 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ System\textcolor{BrickRed}{.}out\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{println}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}s.size()\ =\ "{}}}\ \textcolor{BrickRed}{+}\ s\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{size}}\textcolor{BrickRed}{());} \\
  45 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ Iterator\textcolor{BrickRed}{$<$}Integer\textcolor{BrickRed}{$>$}\ i\ \textcolor{BrickRed}{=}\ s\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{iterator}}\textcolor{BrickRed}{();} \\
  46 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \textbf{\textcolor{Blue}{while}}\ \textcolor{BrickRed}{(}i\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{hasNext}}\textcolor{BrickRed}{())}\textcolor{Red}{\{} \\
  47 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ System\textcolor{BrickRed}{.}out\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{println}}\textcolor{BrickRed}{(}i\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{next}}\textcolor{BrickRed}{());} \\
  48 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ i\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{remove}}\textcolor{BrickRed}{();} \\
  49 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ \textcolor{Red}{\}} \\
  50 \mbox{}\ \ \ \ \ \ \ \ \ \ \ \ System\textcolor{BrickRed}{.}out\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{println}}\textcolor{BrickRed}{(}\texttt{\textcolor{Red}{"{}s.size()\ =\ "{}}}\ \textcolor{BrickRed}{+}\ s\textcolor{BrickRed}{.}\textbf{\textcolor{Black}{size}}\textcolor{BrickRed}{());} \\
  51 \mbox{}\ \ \ \ \ \ \ \ \textcolor{Red}{\}} \\
  52 \mbox{}\ \ \ \ \textcolor{Red}{\}} \\
  53 \mbox{}\textcolor{Red}{\}} \\
  54 \mbox{} \\
  55
  56 } \normalfont\normalsize