1098 insertion or heap sort

堆排序STL algorithm里有建堆make_heap,出栈 pop_heap(将堆首元素移至容器尾部),入栈push_heap,以及堆排序sort_heap

AC代码

#include <vector>
#include <cstdio>
#include <string>
#include <algorithm>
using namespace std;
int main(){
    int n;
    vector<int> bv,av;
    scanf("%d",&n);
    for(int i = 0;i < n;i++){
        int tmp;
        scanf("%d",&tmp);
        bv.push_back(tmp);
    }
    for(int i = 0;i < n;i++){
        int tmp;
        scanf("%d",&tmp);
        av.push_back(tmp);
    }
    int i;
    for(i = 0;i < n;i++){
        if(i < n - 1 && av[i] > av[i+1]){
            break;
        }
    }
    i++;
    bool ins(true);
    for(int j = i;j < n;j++){
        if(av[j] != bv[j]){
            ins = false;
            break;
        }
    }
    if(ins){
        printf("Insertion Sort
");
        int tmp(av[i]),id;
        for(int j = 0;j < i;j++){
            if(av[j] > tmp){
                id = j;
                break;
            }
        }
        for(int j = i;j > id;j--){
            av[j] = av[j-1];
        }
        av[id] = tmp;
        for(int j = 0;j < av.size();j++){
            if(j == 0)
                printf("%d",av[j]);
            else
                printf(" %d",av[j]);
        }
    }
    else{
        printf("Heap Sort
");
        int h(av[0]);
        int j;
        for(j = av.size() - 1;j >= 0;j--){
            if(av[j] < h)
                break;
        }
        make_heap(av.begin(),av.begin() + j + 1);
        pop_heap(av.begin(),av.begin() + j + 1);        
        for(int j = 0;j < av.size();j++){
            if(j == 0)
                printf("%d",av[j]);
            else
                printf(" %d",av[j]);
        }
    }
    return 0;
}
原文地址:https://www.cnblogs.com/Aldorado/p/5265035.html