[Math] 反矩陣 inverse matrix

有圖片說明
http://www.wikihow.com/Inverse-a-3X3-Matrix

[C] array size 0

Arrays of Length Zero

http://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html

[Android] NDK Startup

步驟1:安裝Cygwin
步驟2:安裝NDK
步驟3:安裝Eclipse CDT(C/C++ Development Tool)
步驟4:Hello-JNI

http://cheng-min-i-taiwan.blogspot.tw/2010/06/android-ndk-hellojni.html

[GCC] Tutorial

GCC Tutorial
http://www3.ntu.edu.sg/home/ehchua/programming/cpp/gcc_make.html

JNI Tutorial
http://www3.ntu.edu.sg/home/ehchua/programming/java/JavaNativeInterface.html