c++能通过，c wrong
#include <iostream>
#include <vector>
#include <algorithm>using namespace std;int main() {int n;while (cin >> n) {vector<int> odd, even;int x;for (int i = 0; i < n; i++) {cin >> x;if (i % 2 == 0) {odd.push_back(x);}else {even.push_back(x);}}sort(odd.begin(), odd.end());sort(even.begin(), even.end(), greater<int>());int i = 0, j = 0;bool first = true;while (i < odd.size() || j < even.size()) {if (i < odd.size()) {if (!first) cout << " ";cout << odd[i++];first = false;}if (j < even.size()) {cout << " " << even[j++];}}cout << endl;}return 0;
}#include<stdio.h>
#define N 110void f1(int s[], int len) {for (int i = 0; i < len - 1; i++) {for (int j = 0; j < len - 1 - i; j++) {if (s[j] >= s[j + 1]) {int temp = s[j];s[j] = s[j + 1];s[j + 1] = temp;}}}
}void f2(int s[], int len) {for (int i = 0; i < len - 1; i++) {for (int j = 0; j < len - 1 - i; j++) {if (s[j] <= s[j + 1]) {int temp = s[j];s[j] = s[j + 1];s[j + 1] = temp;}}}
}int main() {int n;while (scanf("%d", &n) == 1) {int a[N], b[N];int la = 0, lb = 0;for (int i = 0; i < n; i++) {int x;scanf("%d", &x);if (i % 2 == 0) { // 奇数位a[la++] = x;}else { // 偶数位b[lb++] = x;}}f1(a, la);f2(b, lb);int i;for (i = 0; i < la && i < lb; i++) {printf("%d %d ", a[i], b[i]);}if (la > lb) {printf("%d ", a[la - 1]);}printf("\n");}return 0;
}
