added Pseudocode example

source-code/Pseudocode/Goldberg-Tarjan-Push-Relabel/Definitions.tex

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+\usepackage{tikz}
+\usetikzlibrary{calc}
+\usepackage{xcolor}
+\makeatletter
+
+% to change colors
+\newcommand{\fillcol}{green!20}
+\newcommand{\bordercol}{black}
+
+% code from Andrew Stacey (with small adjustment to the border color)
+% http://tex.stackexchange.com/questions/51582/background-coloring-with-overlay-specification-in-algorithm2e-beamer-package
+\newcounter{jumping}
+\resetcounteronoverlays{jumping}
+
+\def\jump@setbb#1#2#3{%
+  \@ifundefined{jump@#1@maxbb}{%
+    \expandafter\gdef\csname jump@#1@maxbb\endcsname{#3}%
+  }{%
+    \csname jump@#1@maxbb\endcsname
+    \pgf@xa=\pgf@x
+    \pgf@ya=\pgf@y
+    #3
+    \pgfmathsetlength\pgf@x{max(\pgf@x,\pgf@xa)}%
+    \pgfmathsetlength\pgf@y{max(\pgf@y,\pgf@ya)}%
+    \expandafter\xdef\csname jump@#1@maxbb\endcsname{\noexpand\pgfpoint{\the\pgf@x}{\the\pgf@y}}%
+  }
+  \@ifundefined{jump@#1@minbb}{%
+    \expandafter\gdef\csname jump@#1@minbb\endcsname{#2}%
+  }{%
+    \csname jump@#1@minbb\endcsname
+    \pgf@xa=\pgf@x
+    \pgf@ya=\pgf@y
+    #2
+    \pgfmathsetlength\pgf@x{min(\pgf@x,\pgf@xa)}%
+    \pgfmathsetlength\pgf@y{min(\pgf@y,\pgf@ya)}%
+    \expandafter\xdef\csname jump@#1@minbb\endcsname{\noexpand\pgfpoint{\the\pgf@x}{\the\pgf@y}}%
+  }
+}
+
+\tikzset{%
+  remember picture with id/.style={%
+    remember picture,
+    overlay,
+    draw=\bordercol,
+    save picture id=#1,
+  },
+  save picture id/.code={%
+    \edef\pgf@temp{#1}%
+    \immediate\write\pgfutil@auxout{%
+      \noexpand\savepointas{\pgf@temp}{\pgfpictureid}}%
+  },
+  if picture id/.code args={#1#2#3}{%
+    \@ifundefined{save@pt@#1}{%
+      \pgfkeysalso{#3}%
+    }{
+      \pgfkeysalso{#2}%
+    }
+  },
+  onslide/.code args={<#1>#2}{%
+    \only<#1>{\pgfkeysalso{#2}}%
+  },
+  alt/.code args={<#1>#2#3}{%
+    \alt<#1>{\pgfkeysalso{#2}}{\pgfkeysalso{#3}}%
+  },
+  stop jumping/.style={
+    execute at end picture={%
+      \stepcounter{jumping}%
+      \immediate\write\pgfutil@auxout{%
+        \noexpand\jump@setbb{\the\value{jumping}}{\noexpand\pgfpoint{\the\pgf@picminx}{\the\pgf@picminy}}{\noexpand\pgfpoint{\the\pgf@picmaxx}{\the\pgf@picmaxy}}
+      },
+      \csname jump@\the\value{jumping}@maxbb\endcsname
+      \path (\the\pgf@x,\the\pgf@y);
+      \csname jump@\the\value{jumping}@minbb\endcsname
+      \path (\the\pgf@x,\the\pgf@y);
+    },
+  }
+}
+
+
+\def\savepointas#1#2{%
+  \expandafter\gdef\csname save@pt@#1\endcsname{#2}%
+}
+
+\def\tmk@labeldef#1,#2\@nil{%
+  \def\tmk@label{#1}%
+  \def\tmk@def{#2}%
+}
+
+\tikzdeclarecoordinatesystem{pic}{%
+  \pgfutil@in@,{#1}%
+  \ifpgfutil@in@%
+    \tmk@labeldef#1\@nil
+  \else
+    \tmk@labeldef#1,\pgfpointorigin\@nil
+  \fi
+  \@ifundefined{save@pt@\tmk@label}{%
+    \tikz@scan@one@point\pgfutil@firstofone\tmk@def
+  }{%
+  \pgfsys@getposition{\csname save@pt@\tmk@label\endcsname}\save@orig@pic%
+  \pgfsys@getposition{\pgfpictureid}\save@this@pic%
+  \pgf@process{\pgfpointorigin\save@this@pic}%
+  \pgf@xa=\pgf@x
+  \pgf@ya=\pgf@y
+  \pgf@process{\pgfpointorigin\save@orig@pic}%
+  \advance\pgf@x by -\pgf@xa
+  \advance\pgf@y by -\pgf@ya
+  }%
+}
+\newcommand\tikzmark[2][]{%
+\tikz[remember picture with id=#2] #1;}
+\makeatother
+
+\resetcounteronoverlays{algocf}
+
+\newcommand<>{\boxto}[1]{%
+\only#2{\tikz[remember picture with id=#1]
+\draw[line width=1pt,fill=\fillcol,rectangle,rounded corners]
+(pic cs:#1) ++(5.2,-.1) rectangle (-0.4,0)
+;\tikz\node [anchor=base] (#1){};}% <= insertion to store the anchor to be used as based for the annotation
+}

source-code/Pseudocode/Goldberg-Tarjan-Push-Relabel/Goldberg-Tarjan-Push-Relabel.tex

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+\documentclass{article}
+\usepackage[pdftex,active,tightpage]{preview}
+\setlength\PreviewBorder{2mm}
+
+\usepackage{amssymb,amsmath,amsfonts} % nice math rendering
+\usepackage{braket} % needed for \Set
+\usepackage{algorithm,algpseudocode}
+
+\begin{document}
+\begin{preview}
+    \begin{itemize}
+        \item $c:E \rightarrow \mathbb{R}_0^+$: capacity of an edge
+        \item $e: V \rightarrow \mathbb{R}_0^+$: excess (too much flow in one node)
+        \item $r_f: V \times V \rightarrow \mathbb{R}, \; r_f(u,v) := c(u,v) - f(u,v) $: remaining capacity 
+        \item $dist: V \rightarrow \mathbb{N}$: the label (imagine this as height)
+    \end{itemize}
+
+    \begin{algorithm}[H]
+        \begin{algorithmic}
+             \Function{PushRelabel}{Network $N(D, s, t, c)$}
+                \ForAll{$(v,w) \in (V \times V \setminus E)$} \Comment{If an edge is not in $D=(V,E)$,}
+                    \State $c(v,w) \gets 0$ \Comment{then its capacity is 0}
+                \EndFor
+                \\
+                \ForAll{$(v,w) \in V \times V$} \Comment{At the beginning, every edge}
+                    \State $f(v,w) \gets 0$ \Comment{has flow=0}
+                    \State $r_f(v,w) \gets c(v,w)$  \Comment{flow=max in the residualgraph}
+                \EndFor
+                \\
+                \State $dist(s) \gets |V|$
+
+                \ForAll{$v \in V \setminus \Set{s}$}
+                    \State $f(s,v) \gets c(s,v)$    \Comment{Push maximum flow out at the beginning}
+                    \State $r(v,s) \gets c(v,s) - f(v,s)$
+                    \State $dist(v) \gets 0$
+                    \State $e(v) \gets c(s,v)$ \Comment{$v$ has to much flow}
+                \EndFor
+                \\
+                \While{$\exists v \in V:$ \Call{isActive}{v}}
+                    \If{\Call{isPushOk}{v}}
+                        \State \Call{Push}{v}
+                    \ElsIf{\Call{isRelabelOk}{v}}
+                        \State \Call{Relabel}{v}
+                    \EndIf
+                \EndWhile
+                \\
+                \State \Return $f$ \Comment{Maximaler Fluss}
+             \EndFunction
+            \\
+            \Function{Push}{Graph $D$, Flow $f$, Node $v$, Node $w$}
+                \State $\Delta \gets \min\Set{e(v), r_f(v,w)}$
+                \State $f(v,w) \gets f(v,w) + \Delta$
+                \State $f(w,v) \gets f(w,v) - \Delta$
+                \State $r_f(v,w) \gets r_f(v,w) - \Delta$
+                \State $r_f(w,v) \gets r_f(w,v) + \Delta$
+                \State $e(v) \gets e(v) - \Delta$
+                \State $e(w) \gets e(w) + \Delta$
+            \EndFunction
+            \\
+            \Function{Relabel}{Node $v$}
+                \If{$\Set{w|r_f(v,w) > 0} == \emptyset$}
+                    \State $dist(v) \gets \infty$
+                \Else
+                    \State $dist(v) \gets \min\Set{dist(w)+1|w \in V: r_f(v,w) > 0}$
+                \EndIf
+            \EndFunction
+            \\
+            \Function{isActive}{Node v}
+                \State\Return $(e(v) > 0) \land (dist(v) < \infty)$
+            \EndFunction
+            \\
+            \Function{isRelabelOk}{Node v}
+                \State\Return \Call{isActive}{v} $\land (\forall w \in \Set{r_f(v,w) >0}: dist(v) \leq dist(w))$
+            \EndFunction
+            \\
+            \Function{isPushOk}{Node v}
+                \State\Return \Call{isActive}{v} $\land (r_f > 0) \land (dist(v) == dist(w)+1)$
+            \EndFunction
+        \end{algorithmic}
+    \caption{Algorithm of Goldberg and Tarjan}
+    \label{alg:seq1}
+    \end{algorithm}
+\end{preview}
+\end{document}

source-code/Pseudocode/Goldberg-Tarjan-Push-Relabel/Makefile

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+SOURCE = Goldberg-Tarjan-Push-Relabel
+DELAY = 80
+DENSITY = 300
+WIDTH = 500
+
+make:
+	pdflatex $(SOURCE).tex -output-format=pdf
+	make clean
+
+clean:
+	rm -rf  $(TARGET) *.class *.html *.log *.aux *.data *.gnuplot
+
+gif:
+	pdfcrop $(SOURCE).pdf
+	convert -verbose -delay $(DELAY) -loop 0 -density $(DENSITY) $(SOURCE)-crop.pdf $(SOURCE).gif
+	make clean
+
+png:
+	make
+	make svg
+	inkscape $(SOURCE).svg -w $(WIDTH) --export-png=$(SOURCE).png
+
+transparentGif:
+	convert $(SOURCE).pdf -transparent white result.gif
+	make clean
+
+svg:
+	make
+	#inkscape $(SOURCE).pdf --export-plain-svg=$(SOURCE).svg
+	pdf2svg $(SOURCE).pdf $(SOURCE).svg
+	# Necessary, as pdf2svg does not always create valid svgs:
+	inkscape $(SOURCE).svg --export-plain-svg=$(SOURCE).svg
+	rsvg-convert -a -w $(WIDTH) -f svg $(SOURCE).svg -o $(SOURCE)2.svg
+	inkscape $(SOURCE)2.svg --export-plain-svg=$(SOURCE).svg
+	rm $(SOURCE)2.svg