How to find the minimum and maximum element of a Vector using STL in C++?
Given a vector, find the minimum and maximum element of this vector using STL in C++.
Example:
Input: {1, 45, 54, 71, 76, 12}
Output: min = 1, max = 76
Input: {10, 7, 5, 4, 6, 12}
Output: min = 4, max = 12
Approach:
- Min or Minimum element can be found with the help of *min_element() function provided in STL.
- Max or Maximum element can be found with the help of *max_element() function provided in STL.
- MinMax function finds both minimum and maximum element in one go as a pair, this function is a part of algorithms library.
Syntax:
*min_element (first_index, last_index);
*max_element (first_index, last_index);
*minmax_element(first_index, last_index);
Below is the implementation of the above approach:
CPP
// C++ program to find the min and max element // of Vector using *min_element(), *max_element(), // *minmax_element() in STL #include <bits/stdc++.h> using namespace std; int main() { // Get the vector vector< int > a = { 1, 45, 54, 71, 76, 12 }; // Print the vector cout << "Vector: " ; for ( int i = 0; i < a.size(); i++) cout << a[i] << " " ; cout << endl; // Find the min element cout << "\nMin Element = " << *min_element(a.begin(), a.end()); // Find the max element cout << "\nMax Element = " << *max_element(a.begin(), a.end()); // Find min, max pair auto minmax = minmax_element(a.begin(), a.end()); cout << "\npair_min = " << *minmax.first << ", pair_max = " << *minmax.second << '\n' ; return 0; } |
Output
Vector: 1 45 54 71 76 12 Min Element = 1 Max Element = 76 pair_min = 1, pair_max = 76
Time Complexity: O(N)
Auxiliary Space: O(1)
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