静态查找表（二）有序表的查找
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<iframe style="WIDTH: 44.33%; HEIGHT: 259px" src="http://pagead2.googlesyndication.com/cpa/ads?client=ca-pub-4577827332549849&cpa_choice=CAEaCB94-nvUZWENUB9QugJQtwRQTVAgULcCUB4&oe=gb2312&dt=1192720966468&lmt=1192720966&format=250x250_as&output=html&correlator=1192720966453&channel=2735220158&url=http%3A%2F%2Fyzkzoo.5d6d.com%2Fthread-67-1-1.html&color_bg=FFFFFF&color_text=000000&color_link=0000FF&color_url=008000&color_border=336699&ad_type=text_image&region=_google_cpa_region_&ref=http%3A%2F%2Fyzkzoo.5d6d.com%2Fforum-16-1.html&cc=100&ga_vid=1025434795.1192631677&ga_sid=1192720940&ga_hid=1155529757&ga_fc=true&flash=8&u_h=768&u_w=1024&u_ah=738&u_aw=1024&u_cd=32&u_tz=480&u_his=2&u_java=true"></iframe>一、折半查找的查找过程
以有序表表示静态查找表时，Search函数可用折半查找来实现。
先确定待查记录所在的范围（区间），然后逐步缩小范围直到找到或找不到该记录为止。
二、折半查找的查找实现
int Search_Bin(SSTable ST,KeyType key){
low=1;high=ST.length;
while(low<=high){
mid=(low+high)/2;
if EQ(key,ST.elem[mid].key) return mid;
else if LT(key,ST.elem[mid].key) high=mid -1;
else low=mid +1 ;
}
return 0;
}//Search_Bin;
三、折半查找的性能分析
折半查找在查找成功时和给定值进行比较的关键字个数至多为
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