使用最少数量的比较的数组的最大值和最小值

编写一个C函数以返回数组中的最小值和最大值。您的程序应进行最少数量的比较。

首先，我们如何从C函数返回多个值?我们可以使用结构或指针来做到这一点。
我们创建了一个名为pair(包含最小和最大)的结构以返回多个值。

c

struct pair
{
  int min;
  int max;
};

并且函数声明变为：结构对getMinMax(int arr []，int n)其中arr []是大小为n的数组，需要最小和最大值。

方法1(简单线性搜索)
将min和max的值分别初始化为前两个元素的最小值和最大值。从3开始，将每个元素与max和min进行比较，并相应地更改max和min(即，如果元素小于min则更改min，否则，如果元素大于max则更改max，否则忽略该元素)

C++

// C++ program of above implementation
#include
using namespace std;
 
// Pair struct is used to return
// two values from getMinMax()
struct Pair
{
    int min;
    int max;
};
 
struct Pair getMinMax(int arr[], int n)
{
    struct Pair minmax;    
    int i;
     
    // If there is only one element
    // then return it as min and max both
    if (n == 1)
    {
        minmax.max = arr[0];
        minmax.min = arr[0];    
        return minmax;
    }
     
    // If there are more than one elements,
    // then initialize min and max
    if (arr[0] > arr[1])
    {
        minmax.max = arr[0];
        minmax.min = arr[1];
    }
    else
    {
        minmax.max = arr[1];
        minmax.min = arr[0];
    }
     
    for(i = 2; i < n; i++)
    {
        if (arr[i] > minmax.max)    
            minmax.max = arr[i];
             
        else if (arr[i] < minmax.min)    
            minmax.min = arr[i];
    }
    return minmax;
}
 
// Driver code
int main()
{
    int arr[] = { 1000, 11, 445,
                  1, 330, 3000 };
    int arr_size = 6;
     
    struct Pair minmax = getMinMax(arr, arr_size);
     
    cout << "Minimum element is "
         << minmax.min << endl;
    cout << "Maximum element is "
         << minmax.max;
          
    return 0;
}
 
// This code is contributed by nik_3112

C

/* structure is used to return two values from minMax() */
#include
struct pair
{
  int min;
  int max;
}; 
 
struct pair getMinMax(int arr[], int n)
{
  struct pair minmax;    
  int i;
   
  /*If there is only one element then return it as min and max both*/
  if (n == 1)
  {
     minmax.max = arr[0];
     minmax.min = arr[0];    
     return minmax;
  }   
 
  /* If there are more than one elements, then initialize min
      and max*/
  if (arr[0] > arr[1]) 
  {
      minmax.max = arr[0];
      minmax.min = arr[1];
  } 
  else
  {
      minmax.max = arr[1];
      minmax.min = arr[0];
  }   
 
  for (i = 2; i  minmax.max)     
      minmax.max = arr[i];
   
    else if (arr[i] <  minmax.min)     
      minmax.min = arr[i];
  }
   
  return minmax;
}
 
/* Driver program to test above function */
int main()
{
  int arr[] = {1000, 11, 445, 1, 330, 3000};
  int arr_size = 6;
  struct pair minmax = getMinMax (arr, arr_size);
  printf("nMinimum element is %d", minmax.min);
  printf("nMaximum element is %d", minmax.max);
  getchar();
} 

Java

// Java program of above implementation
public class GFG {
/* Class Pair is used to return two values from getMinMax() */
    static class Pair {
 
        int min;
        int max;
    }
 
    static Pair getMinMax(int arr[], int n) {
        Pair minmax = new  Pair();
        int i;
 
        /*If there is only one element then return it as min and max both*/
        if (n == 1) {
            minmax.max = arr[0];
            minmax.min = arr[0];
            return minmax;
        }
 
        /* If there are more than one elements, then initialize min
    and max*/
        if (arr[0] > arr[1]) {
            minmax.max = arr[0];
            minmax.min = arr[1];
        } else {
            minmax.max = arr[1];
            minmax.min = arr[0];
        }
 
        for (i = 2; i < n; i++) {
            if (arr[i] > minmax.max) {
                minmax.max = arr[i];
            } else if (arr[i] < minmax.min) {
                minmax.min = arr[i];
            }
        }
 
        return minmax;
    }
 
    /* Driver program to test above function */
    public static void main(String args[]) {
        int arr[] = {1000, 11, 445, 1, 330, 3000};
        int arr_size = 6;
        Pair minmax = getMinMax(arr, arr_size);
        System.out.printf("\nMinimum element is %d", minmax.min);
        System.out.printf("\nMaximum element is %d", minmax.max);
 
    }
 
}

Python3

# Python program of above implementation
 
# structure is used to return two values from minMax()
 
class pair:
    def __init__(self):
        self.min = 0
        self.max = 0
 
def getMinMax(arr: list, n: int) -> pair:
    minmax = pair()
 
    # If there is only one element then return it as min and max both
    if n == 1:
        minmax.max = arr[0]
        minmax.min = arr[0]
        return minmax
 
    # If there are more than one elements, then initialize min
    # and max
    if arr[0] > arr[1]:
        minmax.max = arr[0]
        minmax.min = arr[1]
    else:
        minmax.max = arr[1]
        minmax.min = arr[0]
 
    for i in range(2, n):
        if arr[i] > minmax.max:
            minmax.max = arr[i]
        elif arr[i] < minmax.min:
            minmax.min = arr[i]
 
    return minmax
 
# Driver Code
if __name__ == "__main__":
    arr = [1000, 11, 445, 1, 330, 3000]
    arr_size = 6
    minmax = getMinMax(arr, arr_size)
    print("Minimum element is", minmax.min)
    print("Maximum element is", minmax.max)
 
# This code is contributed by
# sanjeev2552

C＃

// C# program of above implementation
using System;
 
class GFG
{
    /* Class Pair is used to return
    two values from getMinMax() */
    class Pair
    {
        public int min;
        public int max;
    }
 
    static Pair getMinMax(int []arr, int n)
    {
        Pair minmax = new Pair();
        int i;
 
        /* If there is only one element
        then return it as min and max both*/
        if (n == 1)
        {
            minmax.max = arr[0];
            minmax.min = arr[0];
            return minmax;
        }
 
        /* If there are more than one elements,
        then initialize min and max*/
        if (arr[0] > arr[1])
        {
            minmax.max = arr[0];
            minmax.min = arr[1];
        }
        else
        {
            minmax.max = arr[1];
            minmax.min = arr[0];
        }
 
        for (i = 2; i < n; i++)
        {
            if (arr[i] > minmax.max)
            {
                minmax.max = arr[i];
            }
            else if (arr[i] < minmax.min)
            {
                minmax.min = arr[i];
            }
        }
        return minmax;
    }
 
    // Driver Code
    public static void Main(String []args)
    {
        int []arr = {1000, 11, 445, 1, 330, 3000};
        int arr_size = 6;
        Pair minmax = getMinMax(arr, arr_size);
        Console.Write("Minimum element is {0}",
                                   minmax.min);
        Console.Write("\nMaximum element is {0}",
                                     minmax.max);
    }
}
 
// This code is contributed by PrinciRaj1992

输出：

Minimum element is 1
Maximum element is 3000

时间复杂度： O(n)

在这种方法中，最坏情况下的比较总数为1 + 2(n-2)，最好情况下为1 + n – 2。
在上述实现中，最坏的情况发生在元素按降序排序时，而最坏的情况发生在元素按升序排序时。

方法2(比赛方法)
将数组分为两部分，比较两部分的最大值和最小值，以获得整个数组的最大值和最小值。

Pair MaxMin(array, array_size)
   if array_size = 1
      return element as both max and min
   else if arry_size = 2
      one comparison to determine max and min
      return that pair
   else    /* array_size  > 2 */
      recur for max and min of left half
      recur for max and min of right half
      one comparison determines true max of the two candidates
      one comparison determines true min of the two candidates
      return the pair of max and min

执行

C++

// C++ program of above implementation
#include
using namespace std;
 
// structure is used to return
// two values from minMax()
struct Pair
{
    int min;
    int max;
};
 
struct Pair getMinMax(int arr[], int low,
                                 int high)
{
    struct Pair minmax, mml, mmr;    
    int mid;
     
    // If there is only one element
    if (low == high)
    {
        minmax.max = arr[low];
        minmax.min = arr[low];    
        return minmax;
    }
     
    // If there are two elements
    if (high == low + 1)
    {
        if (arr[low] > arr[high])
        {
            minmax.max = arr[low];
            minmax.min = arr[high];
        }
        else
        {
            minmax.max = arr[high];
            minmax.min = arr[low];
        }
        return minmax;
    }
     
    // If there are more than 2 elements
    mid = (low + high) / 2;
    mml = getMinMax(arr, low, mid);
    mmr = getMinMax(arr, mid + 1, high);
     
    // Compare minimums of two parts
    if (mml.min < mmr.min)
        minmax.min = mml.min;
    else
        minmax.min = mmr.min;    
     
    // Compare maximums of two parts
    if (mml.max > mmr.max)
        minmax.max = mml.max;
    else
        minmax.max = mmr.max;    
     
    return minmax;
}
 
// Driver code
int main()
{
    int arr[] = { 1000, 11, 445,
                  1, 330, 3000 };
    int arr_size = 6;
     
    struct Pair minmax = getMinMax(arr, 0,
                             arr_size - 1);
                              
    cout << "Minimum element is "
         << minmax.min << endl;
    cout << "Maximum element is "
         << minmax.max;
          
    return 0;
}
 
// This code is contributed by nik_3112

C

/* structure is used to return two values from minMax() */
#include
struct pair
{
  int min;
  int max;
}; 
 
struct pair getMinMax(int arr[], int low, int high)
{
  struct pair minmax, mml, mmr;      
  int mid;
   
  // If there is only one element
  if (low == high)
  {
     minmax.max = arr[low];
     minmax.min = arr[low];    
     return minmax;
  }   
   
  /* If there are two elements */
  if (high == low + 1)
  { 
     if (arr[low] > arr[high]) 
     {
        minmax.max = arr[low];
        minmax.min = arr[high];
     } 
     else
     {
        minmax.max = arr[high];
        minmax.min = arr[low];
     } 
     return minmax;
  }
   
  /* If there are more than 2 elements */
  mid = (low + high)/2; 
  mml = getMinMax(arr, low, mid);
  mmr = getMinMax(arr, mid+1, high); 
   
  /* compare minimums of two parts*/
  if (mml.min < mmr.min)
    minmax.min = mml.min;
  else
    minmax.min = mmr.min;    
 
  /* compare maximums of two parts*/
  if (mml.max > mmr.max)
    minmax.max = mml.max;
  else
    minmax.max = mmr.max;    
  
  return minmax;
}
 
/* Driver program to test above function */
int main()
{
  int arr[] = {1000, 11, 445, 1, 330, 3000};
  int arr_size = 6;
  struct pair minmax = getMinMax(arr, 0, arr_size-1);
  printf("nMinimum element is %d", minmax.min);
  printf("nMaximum element is %d", minmax.max);
  getchar();
}

Java

// Java program of above implementation
public class GFG {
/* Class Pair is used to return two values from getMinMax() */
    static class Pair {
 
        int min;
        int max;
    }
 
    static Pair getMinMax(int arr[], int low, int high) {
        Pair minmax = new Pair();
        Pair mml = new Pair();
        Pair mmr = new Pair();
        int mid;
 
        // If there is only one element
        if (low == high) {
            minmax.max = arr[low];
            minmax.min = arr[low];
            return minmax;
        }
 
        /* If there are two elements */
        if (high == low + 1) {
            if (arr[low] > arr[high]) {
                minmax.max = arr[low];
                minmax.min = arr[high];
            } else {
                minmax.max = arr[high];
                minmax.min = arr[low];
            }
            return minmax;
        }
 
        /* If there are more than 2 elements */
        mid = (low + high) / 2;
        mml = getMinMax(arr, low, mid);
        mmr = getMinMax(arr, mid + 1, high);
 
        /* compare minimums of two parts*/
        if (mml.min < mmr.min) {
            minmax.min = mml.min;
        } else {
            minmax.min = mmr.min;
        }
 
        /* compare maximums of two parts*/
        if (mml.max > mmr.max) {
            minmax.max = mml.max;
        } else {
            minmax.max = mmr.max;
        }
 
        return minmax;
    }
 
    /* Driver program to test above function */
    public static void main(String args[]) {
        int arr[] = {1000, 11, 445, 1, 330, 3000};
        int arr_size = 6;
        Pair minmax = getMinMax(arr, 0, arr_size - 1);
        System.out.printf("\nMinimum element is %d", minmax.min);
        System.out.printf("\nMaximum element is %d", minmax.max);
 
    }
}

Python3

# Python program of above implementation
def getMinMax(low, high, arr):
    arr_max = arr[low]
    arr_min = arr[low]
     
    # If there is only one element
    if low == high:
        arr_max = arr[low]
        arr_min = arr[low]
        return (arr_max, arr_min)
         
    # If there is only two element
    elif high == low + 1:
        if arr[low] > arr[high]:
            arr_max = arr[low]
            arr_min = arr[high]
        else:
            arr_max = arr[high]
            arr_min = arr[low]
        return (arr_max, arr_min)
    else:
         
        # If there are more than 2 elements
        mid = int((low + high) / 2)
        arr_max1, arr_min1 = getMinMax(low, mid, arr)
        arr_max2, arr_min2 = getMinMax(mid + 1, high, arr)
 
    return (max(arr_max1, arr_max2), min(arr_min1, arr_min2))
 
# Driver code
arr = [1000, 11, 445, 1, 330, 3000]
high = len(arr) - 1
low = 0
arr_max, arr_min = getMinMax(low, high, arr)
print('Minimum element is ', arr_min)
print('nMaximum element is ', arr_max)
 
# This code is contributed by DeepakChhitarka

C＃

// C# implementation of the approach
using System;
                     
public class GFG {
/* Class Pair is used to return two values from getMinMax() */
    public class Pair {
  
        public int min;
        public int max;
    }
  
    static Pair getMinMax(int []arr, int low, int high) {
        Pair minmax = new Pair();
        Pair mml = new Pair();
        Pair mmr = new Pair();
        int mid;
  
        // If there is only one element
        if (low == high) {
            minmax.max = arr[low];
            minmax.min = arr[low];
            return minmax;
        }
  
        /* If there are two elements */
        if (high == low + 1) {
            if (arr[low] > arr[high]) {
                minmax.max = arr[low];
                minmax.min = arr[high];
            } else {
                minmax.max = arr[high];
                minmax.min = arr[low];
            }
            return minmax;
        }
  
        /* If there are more than 2 elements */
        mid = (low + high) / 2;
        mml = getMinMax(arr, low, mid);
        mmr = getMinMax(arr, mid + 1, high);
  
        /* compare minimums of two parts*/
        if (mml.min < mmr.min) {
            minmax.min = mml.min;
        } else {
            minmax.min = mmr.min;
        }
  
        /* compare maximums of two parts*/
        if (mml.max > mmr.max) {
            minmax.max = mml.max;
        } else {
            minmax.max = mmr.max;
        }
  
        return minmax;
    }
  
    /* Driver program to test above function */
    public static void Main(String []args) {
        int []arr = {1000, 11, 445, 1, 330, 3000};
        int arr_size = 6;
        Pair minmax = getMinMax(arr, 0, arr_size - 1);
        Console.Write("\nMinimum element is {0}", minmax.min);
        Console.Write("\nMaximum element is {0}", minmax.max);
  
    }
}
 
// This code contributed by Rajput-Ji

输出：

Minimum element is 1
Maximum element is 3000

时间复杂度： O(n)

比较总数：让比较数为T(n)。 T(n)可以写成如下：
算法范式：分而治之

T(n) = T(floor(n/2)) + T(ceil(n/2)) + 2  
  T(2) = 1
  T(1) = 0

如果n是2的幂，那么我们可以将T(n)写成：

T(n) = 2T(n/2) + 2

解决上述递归后，我们得到

T(n)  = 3n/2 -2

因此，如果n是2的幂，则该方法进行3n / 2 -2比较，如果n不是2的幂，则该方法进行超过3n / 2 -2比较。

方法3(成对比较)
如果n为奇数，则将min和max初始化为第一个元素。
如果n为偶数，则将min和max分别初始化为前两个元素的最小值和最大值。
对于其余元素，请成对选择它们并进行比较
最大值和最小值分别为max和min。

C++

// C++ program of above implementation
#include
using namespace std;
 
// Structure is used to return
// two values from minMax()
struct Pair
{
    int min;
    int max;
};
 
struct Pair getMinMax(int arr[], int n)
{
    struct Pair minmax;    
    int i;
     
    // If array has even number of elements
    // then initialize the first two elements
    // as minimum and maximum
    if (n % 2 == 0)
    {
        if (arr[0] > arr[1])    
        {
            minmax.max = arr[0];
            minmax.min = arr[1];
        }
        else
        {
            minmax.min = arr[0];
            minmax.max = arr[1];
        }
         
        // Set the starting index for loop
        i = 2;
    }
     
    // If array has odd number of elements
    // then initialize the first element as
    // minimum and maximum
    else
    {
        minmax.min = arr[0];
        minmax.max = arr[0];
         
        // Set the starting index for loop
        i = 1;
    }
     
    // In the while loop, pick elements in
    // pair and compare the pair with max
    // and min so far
    while (i < n - 1)
    {        
        if (arr[i] > arr[i + 1])        
        {
            if(arr[i] > minmax.max)    
                minmax.max = arr[i];
                 
            if(arr[i + 1] < minmax.min)        
                minmax.min = arr[i + 1];    
        }
        else       
        {
            if (arr[i + 1] > minmax.max)    
                minmax.max = arr[i + 1];
                 
            if (arr[i] < minmax.min)        
                minmax.min = arr[i];    
        }
         
        // Increment the index by 2 as
        // two elements are processed in loop
        i += 2;
    }        
    return minmax;
}
 
// Driver code
int main()
{
    int arr[] = { 1000, 11, 445,
                1, 330, 3000 };
    int arr_size = 6;
     
    Pair minmax = getMinMax(arr, arr_size);
     
    cout << "nMinimum element is "
        << minmax.min << endl;
    cout << "nMaximum element is "
        << minmax.max;
         
    return 0;
}
 
// This code is contributed by nik_3112

C

#include
 
/* structure is used to return two values from minMax() */
struct pair
{
  int min;
  int max;
}; 
 
struct pair getMinMax(int arr[], int n)
{
  struct pair minmax;    
  int i; 
 
  /* If array has even number of elements then
    initialize the first two elements as minimum and
    maximum */
  if (n%2 == 0)
  {        
    if (arr[0] > arr[1])    
    {
      minmax.max = arr[0];
      minmax.min = arr[1];
    } 
    else
    {
      minmax.min = arr[0];
      minmax.max = arr[1];
    }
    i = 2;  /* set the starting index for loop */
  } 
 
   /* If array has odd number of elements then
    initialize the first element as minimum and
    maximum */
  else
  {
    minmax.min = arr[0];
    minmax.max = arr[0];
    i = 1;  /* set the starting index for loop */
  }
   
  /* In the while loop, pick elements in pair and
     compare the pair with max and min so far */   
  while (i < n-1) 
  {         
    if (arr[i] > arr[i+1])         
    {
      if(arr[i] > minmax.max)       
        minmax.max = arr[i];
      if(arr[i+1] < minmax.min)         
        minmax.min = arr[i+1];       
    }
    else        
    {
      if (arr[i+1] > minmax.max)       
        minmax.max = arr[i+1];
      if (arr[i] < minmax.min)         
        minmax.min = arr[i];       
    }       
    i += 2; /* Increment the index by 2 as two
               elements are processed in loop */
  }           
 
  return minmax;
}   
 
/* Driver program to test above function */
int main()
{
  int arr[] = {1000, 11, 445, 1, 330, 3000};
  int arr_size = 6;
  struct pair minmax = getMinMax (arr, arr_size);
  printf("nMinimum element is %d", minmax.min);
  printf("nMaximum element is %d", minmax.max);
  getchar();
}

Java

// Java program of above implementation
public class GFG {
 
/* Class Pair is used to return two values from getMinMax() */
    static class Pair {
 
        int min;
        int max;
    }
 
    static Pair getMinMax(int arr[], int n) {
        Pair minmax = new Pair();
        int i;
        /* If array has even number of elements then 
    initialize the first two elements as minimum and 
    maximum */
        if (n % 2 == 0) {
            if (arr[0] > arr[1]) {
                minmax.max = arr[0];
                minmax.min = arr[1];
            } else {
                minmax.min = arr[0];
                minmax.max = arr[1];
            }
            i = 2;
            /* set the starting index for loop */
        } /* If array has odd number of elements then 
    initialize the first element as minimum and 
    maximum */ else {
            minmax.min = arr[0];
            minmax.max = arr[0];
            i = 1;
            /* set the starting index for loop */
        }
 
        /* In the while loop, pick elements in pair and 
     compare the pair with max and min so far */
        while (i < n - 1) {
            if (arr[i] > arr[i + 1]) {
                if (arr[i] > minmax.max) {
                    minmax.max = arr[i];
                }
                if (arr[i + 1] < minmax.min) {
                    minmax.min = arr[i + 1];
                }
            } else {
                if (arr[i + 1] > minmax.max) {
                    minmax.max = arr[i + 1];
                }
                if (arr[i] < minmax.min) {
                    minmax.min = arr[i];
                }
            }
            i += 2;
            /* Increment the index by 2 as two 
               elements are processed in loop */
        }
 
        return minmax;
    }
 
    /* Driver program to test above function */
    public static void main(String args[]) {
        int arr[] = {1000, 11, 445, 1, 330, 3000};
        int arr_size = 6;
        Pair minmax = getMinMax(arr, arr_size);
        System.out.printf("\nMinimum element is %d", minmax.min);
        System.out.printf("\nMaximum element is %d", minmax.max);
 
    }
}

Python3

# Python3 program of above implementation
def getMinMax(arr):
     
    n = len(arr)
     
    # If array has even number of elements then
    # initialize the first two elements as minimum
    # and maximum
    if(n % 2 == 0):
        mx = max(arr[0], arr[1])
        mn = min(arr[0], arr[1])
         
        # set the starting index for loop
        i = 2
         
    # If array has odd number of elements then
    # initialize the first element as minimum
    # and maximum
    else:
        mx = mn = arr[0]
         
        # set the starting index for loop
        i = 1
         
    # In the while loop, pick elements in pair and
    # compare the pair with max and min so far
    while(i < n - 1):
        if arr[i] < arr[i + 1]:
            mx = max(mx, arr[i + 1])
            mn = min(mn, arr[i])
        else:
            mx = max(mx, arr[i])
            mn = min(mn, arr[i + 1])
             
        # Increment the index by 2 as two
        # elements are processed in loop
        i += 2
     
    return (mx, mn)
     
# Driver Code
if __name__ =='__main__':
     
    arr = [1000, 11, 445, 1, 330, 3000]
    mx, mn = getMinMax(arr)
    print("Minimum element is", mn)
    print("Maximum element is", mx)
     
# This code is contributed by Kaustav

C＃

// C# program of above implementation
using System;
     
class GFG
{
 
    /* Class Pair is used to return
       two values from getMinMax() */
    public class Pair
    {
        public int min;
        public int max;
    }
 
    static Pair getMinMax(int []arr, int n)
    {
        Pair minmax = new Pair();
        int i;
         
        /* If array has even number of elements
        then initialize the first two elements
        as minimum and maximum */
        if (n % 2 == 0)
        {
            if (arr[0] > arr[1])
            {
                minmax.max = arr[0];
                minmax.min = arr[1];
            }
            else
            {
                minmax.min = arr[0];
                minmax.max = arr[1];
            }
            i = 2;
        }
         
        /* set the starting index for loop */
        /* If array has odd number of elements then
        initialize the first element as minimum and
        maximum */
        else
        {
            minmax.min = arr[0];
            minmax.max = arr[0];
            i = 1;
            /* set the starting index for loop */
        }
 
        /* In the while loop, pick elements in pair and
        compare the pair with max and min so far */
        while (i < n - 1)
        {
            if (arr[i] > arr[i + 1])
            {
                if (arr[i] > minmax.max)
                {
                    minmax.max = arr[i];
                }
                if (arr[i + 1] < minmax.min)
                {
                    minmax.min = arr[i + 1];
                }
            }
            else
            {
                if (arr[i + 1] > minmax.max)
                {
                    minmax.max = arr[i + 1];
                }
                if (arr[i] < minmax.min)
                {
                    minmax.min = arr[i];
                }
            }
            i += 2;
             
            /* Increment the index by 2 as two
            elements are processed in loop */
        }
        return minmax;
    }
 
    // Driver Code
    public static void Main(String []args)
    {
        int []arr = {1000, 11, 445, 1, 330, 3000};
        int arr_size = 6;
        Pair minmax = getMinMax(arr, arr_size);
        Console.Write("Minimum element is {0}",
                                   minmax.min);
        Console.Write("\nMaximum element is {0}",
                                     minmax.max);
    }
}
 
// This code is contributed by 29AjayKumar

输出：

Minimum element is 1
Maximum element is 3000

时间复杂度： O(n)

比较总数：偶数和奇数n有所不同，请参见下文：

If n is odd:    3*(n-1)/2  
       If n is even:   1 Initial comparison for initializing min and max, 
                           and 3(n-2)/2 comparisons for rest of the elements  
                      =  1 + 3*(n-2)/2 = 3n/2 -2