题解 | #打印极值点下标#

#include <stdio.h>

int main() {
   int num;
   while(scanf("%d",&num)!=EOF){
        int nums[num];
        for(int i=0;i<num;i++){
            scanf("%d ",&nums[i]);
        }
        if(nums[0]!=nums[1])
            printf("%d ",0);
        for(int i=1;i<num-1;i++){
            if(((nums[i]>nums[i-1])&&(nums[i]>nums[i+1]))||((nums[i]<nums[i-1])&&(nums[i]<nums[i+1])))
                printf("%d ",i);
        }
        if(nums[num-1]!=nums[num-2])
            printf("%d",num-1);
        printf("\n");
   }
    return 0;
}