zoukankan      html  css  js  c++  java
  • 1098 Insertion or Heap Sort (25 分)

    According to Wikipedia:

    Insertion sort iterates, consuming one input element each repetition, and growing a sorted output list. Each iteration, insertion sort removes one element from the input data, finds the location it belongs within the sorted list, and inserts it there. It repeats until no input elements remain.

    Heap sort divides its input into a sorted and an unsorted region, and it iteratively shrinks the unsorted region by extracting the largest element and moving that to the sorted region. it involves the use of a heap data structure rather than a linear-time search to find the maximum.

    Now given the initial sequence of integers, together with a sequence which is a result of several iterations of some sorting method, can you tell which sorting method we are using?

    Input Specification:

    Each input file contains one test case. For each case, the first line gives a positive integer N (≤). Then in the next line, N integers are given as the initial sequence. The last line contains the partially sorted sequence of the N numbers. It is assumed that the target sequence is always ascending. All the numbers in a line are separated by a space.

    Output Specification:

    For each test case, print in the first line either "Insertion Sort" or "Heap Sort" to indicate the method used to obtain the partial result. Then run this method for one more iteration and output in the second line the resulting sequence. It is guaranteed that the answer is unique for each test case. All the numbers in a line must be separated by a space, and there must be no extra space at the end of the line.

    Sample Input 1:

    10
    3 1 2 8 7 5 9 4 6 0
    1 2 3 7 8 5 9 4 6 0
    

    Sample Output 1:

    Insertion Sort
    1 2 3 5 7 8 9 4 6 0
    

    Sample Input 2:

    10
    3 1 2 8 7 5 9 4 6 0
    6 4 5 1 0 3 2 7 8 9
    

    Sample Output 2:

    Heap Sort
    5 4 3 1 0 2 6 7 8 9

    堆排序:https://www.cnblogs.com/chengxiao/p/6129630.html
    分析:https://blog.csdn.net/liuchuo/article/details/52252172
    代码:
     1 #include <bits/stdc++.h>
     2 using namespace std;
     3 
     4 void adjust(int v[], int s, int e)
     5 {
     6     int cur = 1;
     7     while (1)
     8     {
     9         int l = cur << 1, r = cur << 1 | 1;
    10         if (l <= e && r <= e)
    11         {
    12             if (v[l] < v[r])
    13                 swap(v[cur], v[r]), cur = r;
    14             else swap(v[cur], v[l]), cur = l;
    15         }
    16         else if (l <= e && r > e)
    17             swap(v[cur], v[l]), cur = l;
    18         else break;
    19         
    20     }
    21 }
    22 
    23 int main()
    24 {
    25     int n;
    26     int a[110], b[110];
    27     cin >> n;
    28     for (int i = 1; i <= n; i++)
    29         cin >> a[i];
    30     for (int i = 1; i <= n; i++)
    31         cin >> b[i];
    32     int pos = 1;
    33     for (; pos + 1 <= n && b[pos] <= b[pos + 1]; pos++)
    34         ;
    35     int flag = 0;
    36     for(int i = pos + 1; i <= n; i++)
    37         if (a[i] != b[i])
    38         {
    39             flag = 1;
    40             break;
    41         }
    42     if (!flag)
    43     {
    44         cout << "Insertion Sort" << endl;
    45         sort(b + 1, b + 1 + pos + 1);
    46         for (int i = 1; i <= n; i++)
    47             printf("%d%c", b[i], i == n ? '
    ' : ' ');
    48     }
    49     else
    50     {
    51         cout << "Heap Sort" << endl;
    52         int pos = n;
    53         for (; pos >= 1 && b[pos] >= b[1]; pos--);
    54         swap(b[1], b[pos]); pos--;
    55         adjust(b, 1, pos);
    56         for (int i = 1; i <= n; i++)
    57             printf("%d%c", b[i], i == n ? '
    ' : ' ');
    58     }
    59 }
  • 相关阅读:
    hdu 1305 Immediate Decodability
    hdu1247 Hat’s Words
    hdu 1251 统计难题 前缀出现次数
    hdu 3308 线段树,单点更新 求最长连续上升序列长度
    java内部类
    Fckeditor编辑器的安全问题
    Net-NTLMv1的利用
    redis提权
    windows认证过程
    c/c++中system函数在Linux和windows下区别
  • 原文地址:https://www.cnblogs.com/liuwenhan/p/11823076.html
Copyright © 2011-2022 走看看