【codeup墓地】2844: 堆排序 heapsort [3*]（优先队列）

版权声明：假装有个原创声明……虽然少许博文不属于完全原创，但也是自己辛辛苦苦总结的，转载请注明出处，感谢！ https://blog.csdn.net/m0_37454852/article/details/88429220

原题链接

#include <algorithm>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <ctime>
#include <cstring>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <deque>
using namespace std;

const int MAX = 10010, INF = 1<<30;

void heapAdjust(int A[], int root, int len)
{
    int left = root*2, right = left +1;
    int largest = root;
    if(left <= len && A[left] > A[largest]) largest = left;
    if(right <= len && A[right] > A[largest]) largest = right;
    if(largest != root)
    {
        swap(A[largest], A[root]);
        heapAdjust(A, largest, len);
    }
}

void heapSort(int A[], int len)
{
    for(int i=len/2; i>0; i--) heapAdjust(A, i, len);
    for(int i=len; i>0; i--)
    {
        swap(A[1], A[i]);
        heapAdjust(A, 1, i-1);
    }
}

int A[MAX] = {0};

int main()
{
    int N;
    scanf("%d", &N);
    for(int i=1; i<=N; i++) scanf("%d", &A[i]);
    heapSort(A, N);
    for(int i=1; i<=N; i++) printf("%d\n", A[i]);
	return 0;
}

#include <algorithm>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <ctime>
#include <cstring>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <deque>
using namespace std;

const int MAX = 10010, INF = 1<<30;
priority_queue<int, vector<int>, greater<int> > Q;

int main()
{
    int N, X;
    scanf("%d", &N);
    for(int i=0; i<N; i++)
    {
        scanf("%d", &X);
        Q.push(X);
    }
    while(!Q.empty())
    {
        printf("%d\n", Q.top());
        Q.pop();
    }
	return 0;
}