简单遍历
打印极值点下标
http://www.nowcoder.com/questionTerminal/7fd72f8ac7964ba3b8baa8735246e1f1
#include <stdio.h>
int main(){
int n,i;
while(scanf("%d",&n)!=EOF)
{
int a[n];
for(i=0;i<n;i++) scanf("%d",&a[i]);
if(a[0]!=a[1]) printf("0 ");
for(i=1;i<n-1;i++)
{
if(a[i]>a[i-1]&&a[i]>a[i+1]) printf("%d ",i);
else if(a[i]<a[i-1]&&a[i]<a[i+1]) printf("%d ",i);
}
if(a[n-1]!=a[n-2]) printf("%d",n-1);
printf("\n");
}
} (•̀ᴗ•́)و
