樣板 B 樹 ( B - tree )
規(guī)則 :
(1) 每個節(jié)點內(nèi)元素個數(shù)在 [MIN,2*MIN] 之間, 但根節(jié)點元素個數(shù)為 [1,2*MIN]
(2) 節(jié)點內(nèi)元素由小排到大, 元素不重複
(3) 每個節(jié)點內(nèi)的指標個數(shù)為元素個數(shù)加一
(4) 第 i 個指標所指向的子節(jié)點內(nèi)的所有元素值皆小於父節(jié)點的第 i 個元素
(5) B 樹內(nèi)的所有末端節(jié)點深度一樣
DirectX not only provides fast access to the hardware and therefore incredibly speedy performance, but it also makes it much easier for hardware developers to produce new devices that work well in the Windows environment. The DirectX APIs take away the necessity of writing your own low-level, device-specific code to access hardware such as the display adapter and network card, making it much easier for you to write programs that take full advantage of the computer s multimedia capabilities.