zoj 3809 枚举水题 （2014牡丹江网赛 A题）

题目大意：给出一列取样的几个山的高度点，求山峰有几个？

Sample Input

2
9
1 3 2 4 6 3 2 3 1
5
1 2 3 4 5
Sample Output

3
0

 # include <iostream>
 # include <cstdio>
 # include <cstring>
 # include <algorithm>
 # include <cmath>
 # define LL long long
 using namespace std ;

 int a[] ;

 int main ()
 {
     //freopen("in.txt","r",stdin) ;
     int T ;
     cin>>T ;
     while(T--)
     {
         int n ;
         int i ;
         cin>>n ;
         for (i =  ; i <= n ; i++)
             cin>>a[i] ;
         int sum =  ;
         for (i =  ; i <= n- ; i++)
         {
             if (a[i] > a[i-] && a[i] > a[i+])
                 sum++ ;
         }
         cout<<sum<<endl ;
     }

     return  ;
 }