{"id":747,"date":"2011-04-22T21:46:14","date_gmt":"2011-04-22T13:46:14","guid":{"rendered":"http:\/\/www.kumouse.com\/?p=747"},"modified":"2011-04-22T21:46:14","modified_gmt":"2011-04-22T13:46:14","slug":"halfind-%e6%8a%98%e5%8d%8a%e6%9f%a5%e6%89%be","status":"publish","type":"post","link":"https:\/\/www.kumouse.com\/?p=747","title":{"rendered":"halfind – \u6298\u534a\u67e5\u627e"},"content":{"rendered":"

#include <stdio.h>
\n\t#include <string.h>
\n\t#include <stdlib.h>
\n\t#define LEN 8<\/p>\n

\tint halfind(int *a,int key)
\n\t{
\n\t    int start =0,end=LEN-1,mid;
\n\t    while(start <= end){
\n\t        mid=(start+end)\/2;
\n\t        if(a[mid] > key){
\n\t            end=mid -1;
\n\t        }
\n\t        else if(a[mid] < key){
\n\t            start=mid+1;
\n\t        }
\n\t        else
\n\t            return mid;    <\/p>\n

\n\t    }<\/p>\n

\t    return -1;
\n\t}<\/p>\n

\tint main(int argc,char **argv)
\n\t{
\n\t    int a[]={1,2,3,4,5,6,7,8};
\n\t    printf("%dn",halfind(a,atoi(argv[1])));
\n\t   
\n\t    return 0;
\n\t}<\/p>\n

 <\/p>\n

==============\u9012\u5f52\u65b9\u5f0f===============<\/p>\n

#include <stdio.h>
\n\t#include <string.h>
\n\t#include <stdlib.h>
\n\t#define LEN 8
\n\tint a[]={1,2,3,4,5,6,7,8};<\/p>\n

\tint halfind(int start,int end,int key)
\n\t{
\n\t    int mid;
\n\t    if(start <= end){<\/p>\n

\t        mid=(start+end)\/2;
\n\t        if(a[mid] > key){
\n\t            halfind(start,mid -1,key);
\n\t           
\n\t        }
\n\t        else if(a[mid] < key){
\n\t            halfind(mid+1,end,key);
\n\t        }
\n\t        else{
\n\t            printf("%dn",mid);
\n\t            return mid;   
\n\t        }<\/p>\n

\t    }<\/p>\n

\t    return -1;
\n\t}<\/p>\n

\tint main(int argc,char **argv)
\n\t{
\n\t    printf("%dn",halfind(0,LEN-1,atoi(argv[1])));
\n\t   
\n\t    return 0;
\n\t}
\n\t <\/p>\n","protected":false},"excerpt":{"rendered":"

#include <stdio.h> #include <string.h> #inc […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-747","post","type-post","status-publish","format-standard","hentry","category-linux-c"],"_links":{"self":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/747","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=747"}],"version-history":[{"count":0,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/747\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}