09-排序1 排序 (25 分)

给定N个(长整型范围内的)整数,要求输出从小到大排序后的结果。

本题旨在测试各种不同的排序算法在各种数据情况下的表现。各组测试数据特点如下:

 

  • 数据1:只有1个元素;

     

     

  • 数据2:11个不相同的整数,测试基本正确性;

     

     

  • 数据3:103个随机整数;

     

     

  • 数据4:104个随机整数;

     

     

  • 数据5:105个随机整数;

     

     

  • 数据6:105个顺序整数;

     

     

  • 数据7:105个逆序整数;

     

     

  • 数据8:105个基本有序的整数;

     

     

  • 数据9:105个随机正整数,每个数字不超过1000。

     

    输入格式:

    输入第一行给出正整数N(≤),随后一行给出N个(长整型范围内的)整数,其间以空格分隔。

    输出格式:

    在一行中输出从小到大排序后的结果,数字间以1个空格分隔,行末不得有多余空格。

    输入样例:

    11
    4 981 10 -17 0 -20 29 50 8 43 -5
    

    输出样例:

    -20 -17 -5 0 4 8 10 29 43 50 981
  • #include<cstdio>
    const int maxn = 100010;
    
    void Bubble_sort(long* a,int n);
    void Insertion_sort(long* a,int n);
    void Select_sort(long *a,int n);
    void Shell_sort(long* a,int n);
    void Shell_sedgewick(long* a,int n);
    //快排,归并,堆排序 
    
    int main(){
        int n;
        scanf("%d",&n);
        long a[maxn];
        for(int i = 0; i < n; i++){
            scanf("%ld",&a[i]);
        }
        //Bubble_sort(a,n);
        //Insertion_sort(a,n);
        //Select_sort(a,n);
        //Shell_sort(a,n);
        Shell_sedgewick(a,n);
        for(int i = 0; i < n; i++){
            if(i == 0) printf("%ld",a[i]);
            else printf(" %ld",a[i]); 
        }
        return 0;
    }
    
    //冒泡排序 
    void Bubble_sort(long *a,int n){
        bool flag;
        long temp;
        for(int i = n-1; i > 0; i--){
            flag = false;
            for(int j = 0; j < i; j++){
                if(a[j] > a[j+1]){
                    temp = a[j];
                    a[j] = a[j+1];
                    a[j+1] = temp;
                    flag = true;
                }
            }
            if(flag == false) break;
        }
    }
    
    //插入排序 
    void Insertion_sort(long* a,int n){
        int i,j;
        long temp;
        for(i = 1; i < n; i++){
            temp = a[i];
            for(j = i; j > 0 && a[j - 1] > temp; j--) a[j] = a[j - 1];
            a[j] = temp;
        }
    }
    
    //选择排序 
    void Select_sort(long* a,int n){
        int i,j,k;
        long temp;
        for( i = 0; i < n; i++){
            temp = a[i];
            for(j = i + 1; j < n; j++){
                if(a[j] < temp){
                    temp = a[j];
                    k = j;
                }
            }
            a[k] = a[i];
            a[i] = temp;
        }
    }
    
    //希尔-自增排序 
    void Shell_sort(long*a ,int n){
        int i,j,d;
        long temp;
        for(d = n/2; d > 0; d /= 2){
            for(i = d; i < n; i++){
                temp = a[i];
                for(j = i; j >= d && a[j - d] > temp; j -= d)
                       a[j] = a[j - d];
                a[j] = temp;
            }
        }
    }
    
    //希尔-数组排序 
    void Shell_sedgewick(long* a,int n){
        int i,j,d,si;
        int sedgewick[] = {929,505,209,109,41,19,5,1,0};
        long temp;
        for(si = 0; sedgewick[si] >= n; si++);
        for(; sedgewick[si] > 0; si++){
            d = sedgewick[si];
            for(i = d; i < n; i++){
                temp = a[i];
                for(j = i; j >= d && a[j - d] > temp; j -= d) a[j] = a[j - d];
                a[j] = temp;
            }
        }
    }

     

    void Heap_sort(long* a,int n){
        long temp;
        int i;
        for(i = (n-2)/2; i >= 0; i--){
            percdown(a,n,i);
        }
        for(i = n - 1; i > 0; i--){
            temp = a[0];
            a[0] = a[i];
            a[i] = temp;
            percdown(a,i,0);
        }
    }
    void percdown(long* a,int n,int i){
        long x = a[i];
        int child;
        for(; i * 2 + 1 <= n - 1; i = child){
            child = 2 * i + 1;
            if(child < n - 1 && a[child + 1] > a[child]) child++;
            if(a[child] <= x) break;
            else a[i] = a[child];
        }
        a[i] = x;
    }
    
    void Merge_sort(long*a ,int n){
        long* tmp = (long*)malloc(n*sizeof(long));
        msort(a,tmp,0,n-1);
        free(tmp);
    }
    void msort(long*a,long* tmp,int start,int end){
        int middle;
        if(start < end){
            middle = (start+end)/2;
            msort(a,tmp,start,middle);
            msort(a,tmp,middle+1,end);
            merge(a,tmp,start,end,middle);
        }
    }
    void merge(long* a,long* tmp,int start,int end,int middle){
        int l,s,r;
        l = start;
        s = start;
        r = middle + 1;
        while(l <= middle && r <= end){
            if(a[l] < a[r]) tmp[s++] = a[l++];
            else tmp[s++] = a[r++];
        }
        while(l <= middle) tmp[s++] = a[l++];
        while(r <= end) tmp[s++] = a[r++];
        for(;start <= end; start++)
         a[start] = tmp[start];
    }

     

posted @ 2018-11-21 20:26  王清河  阅读(661)  评论(5编辑  收藏  举报