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3.6.cpp
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37 lines (32 loc) · 820 Bytes
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/*
* 题目名称：打印极值点下标
* 题目来源：北京大学复试上机题
* 题目链接：http://t.cn/E9gekWa
* 代码作者：杨泽邦(炉灰)
*/
#include <iostream>
#include <cstdio>
using namespace std;
const int MAXN = 80 + 10;
int arr[MAXN];
int main() {
int n;
while (scanf("%d", &n) != EOF) {
for (int i = 0; i < n; ++i) {
scanf("%d", &arr[i]);
}
if (arr[0] != arr[1]) {
printf("%d ", 0);
}
for (int i = 1; i < n - 1; ++i) {
if ((arr[i] < arr[i - 1] && arr[i] < arr[i + 1]) || (arr[i] > arr[i - 1] && arr[i] > arr[i + 1])){
printf("%d ", i);
}
}
if (arr[n - 2] != arr[n -1]) {
printf("%d ", n - 1);
}
printf("\n");
}
return 0;
}