将形如 0xAABBCC拆分成形如
三个数0xAA,0xBB,0xCC<pre name="code" class="java">private static int[] Int2Arr(int a){
<span style="white-space:pre"> </span>int[] s = new int[3];
<span style="white-space:pre"> </span>s[0]=(a&0xff0000)>>16;
<span style="white-space:pre"> </span>s[1]=(a&0xff00)>>8;
<span style="white-space:pre"> </span>s[2]=a&0xff;
<span style="white-space:pre"> </span>return s;
<span style="white-space:pre"> </span>}
将三个数0xAA,0xBB,0xCC合成<pre name="code" class="java">形如 0xAABBCC
</pre><div><pre name="code" class="java">private static int Arr2Int(int[] a){
int s= (a[0]<<16)+(a[1]<<8)+(a[2]);
return s;
}