added my TikZ examples

tikz/singly-linked-list/Makefile

@@ -0,0 +1,31 @@
+SOURCE = singly-linked-list
+DELAY = 80
+DENSITY = 300
+WIDTH = 500
+
+make:
+	pdflatex $(SOURCE).tex -output-format=pdf
+	make clean
+
+clean:
+	rm -rf  $(TARGET) *.class *.html *.log *.aux
+
+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:
+	#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

tikz/singly-linked-list/singly-linked-list.tex

@@ -0,0 +1,44 @@
+\documentclass{article}
+\usepackage[pdftex,active,tightpage]{preview}
+\setlength\PreviewBorder{2mm}
+ 
+\usepackage{tikz}
+\usetikzlibrary{calc,shapes.multipart,chains,arrows}
+
+\tikzset{
+    squarecross/.style={
+        draw, rectangle,minimum size=18pt, fill=orange!80,
+        inner sep=0pt, text=black,
+        path picture = {
+            \draw[black]
+            (path picture bounding box.north west) -- 
+            (path picture bounding box.south east)
+            (path picture bounding box.south west) -- 
+            (path picture bounding box.north east);
+        }
+    }
+}
+
+\begin{document}
+\begin{preview}
+\begin{tikzpicture}[
+        list/.style={
+            very thick, rectangle split, 
+            rectangle split parts=2, draw, 
+            rectangle split horizontal, minimum size=18pt,
+            inner sep=4pt, text=black,
+            rectangle split part fill={red!20, blue!20}
+        }, 
+        ->, start chain, very thick
+      ]
+
+  \node[list,on chain] (A) {12};
+  \node[list,on chain] (B) {99};
+  \node[list,on chain] (C) {37};
+  \node[squarecross]   (D) [right=of C] {};
+  \draw[*->] let \p1 = (A.two), \p2 = (A.center) in (\x1,\y2) -- (B);
+  \draw[*->] let \p1 = (B.two), \p2 = (B.center) in (\x1,\y2) -- (C);
+  \draw[*->] let \p1 = (C.two), \p2 = (C.center) in (\x1,\y2) -- (D);
+\end{tikzpicture}
+\end{preview}
+\end{document}