weixin_40904220的博客

#include<stdio.h>int *dichotomy(int *a,int num,int flag){ int *low = a; int *heigh = a+num; int *mid = NULL; while(low < heigh){ mid = low + (heigh-low)/2; if((*mid) == flag){ return mid; } else if((*mid) > flag){ heigh = m.