算法思想:先相邻两个两个比较,较大的放入数组max[],较小的放入数组min[],然后从max[]数组求出最大,min[]数组求出最小即可。
比较n+[(n+1)/2] =1.5n次
1
#include <iostream>
2
#define n 11
3
#define m ((n+1)/2)
4
using namespace std;
5![](http://www.cppblog.com/Images/OutliningIndicators/None.gif)
6
void main(void)
7
{
8
int num[] = {11,2,3,4,6,5,7,8,9,10,20};
9
//int n = sizeof(num)/sizeof(num[0]);
10
//int m = (n+1)/2;
11
int max[m] , min[m];
12
int k = 0, j = 0;
13![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
14
if(n/2 != 0) max[m-1] = min[m-1] = num[n-1];
15
16
for (int i=0; i < n-1; i = i+2)
17
{
18
if (num[i] >= num[i+1])
19
{
20
max[j++] = num[i];
21
min[k++] = num[i+1];
22
}
23
else
24
{
25
max[j++] = num[i+1];
26
min[k++] = num[i];
27
}
28![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
29
}
30
31
for( i=0; i< m; i++)
32
{
33
cout << "max[" << i << "] = " << max[i] << "\t";
34
cout << "min[" << i << "] = " << min[i] <<endl;
35
}
36![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
37
int MAX = max[0];
38
int MIN = min[0];
39
40
for ( j = 1; j < m; j++)
41
{
42
if (max[j] > MAX) MAX = max[j];
43
if (min[j] < MIN) MIN = min[j];
44
}
45![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
46
cout << "MAX = " << MAX << ", MIN = " << MIN <<endl;
47
}
![](http://www.cppblog.com/Images/OutliningIndicators/None.gif)
2
![](http://www.cppblog.com/Images/OutliningIndicators/None.gif)
3
![](http://www.cppblog.com/Images/OutliningIndicators/None.gif)
4
![](http://www.cppblog.com/Images/OutliningIndicators/None.gif)
5
![](http://www.cppblog.com/Images/OutliningIndicators/None.gif)
6
![](http://www.cppblog.com/Images/OutliningIndicators/None.gif)
7
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
8
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
9
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
10
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
11
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
12
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
13
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
14
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
15
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
16
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
17
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
18
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
19
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
20
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
21
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
22
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
23
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
24
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
25
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
26
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
27
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
28
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
29
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
30
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
31
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
32
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
33
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
34
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
35
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
36
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
37
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
38
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
39
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
40
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
41
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
42
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
43
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
44
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
45
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
46
![](http://www.cppblog.com/Images/OutliningIndicators/InBlock.gif)
47
![](http://www.cppblog.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)