Use cases for std::ranges::minmax()
What are some real-world applications of std::ranges::minmax()?
std::ranges::minmax() is a powerful function that can be used in various real-world applications where you need to find both the minimum and maximum elements efficiently. Here are some practical examples:
1. Normalizing Data
In data science and statistics, normalizing data to a specific range is common. You can use std::ranges::minmax() to find the minimum and maximum values in a dataset, which helps in scaling the data.
#include <algorithm>
#include <iostream>
#include <vector>
int main() {
std::vector<int> data { 10, 20, 30, 40, 50 };
auto [min, max] = std::ranges::minmax(data);
std::cout << "Min: " << min
<< ", Max: " << max << "\n";
for (int& value : data) {
value = (value - min) * 100 / (max - min);
std::cout << value << " ";
}
}Min: 10, Max: 50
0 25 50 75 1002. Game Development
In game development, you might need to determine the player with the highest and lowest scores. std::ranges::minmax() can be used to quickly find these players.
#include <algorithm>
#include <iostream>
#include <vector>
struct Player {
std::string name;
int score;
};
int main() {
std::vector<Player> players {
{"Alice", 500},
{"Bob", 300},
{"Charlie", 800}
};
auto [minPlayer, maxPlayer] = std::ranges::minmax(
players, [](const Player& a, const Player& b) {
return a.score < b.score;
}
);
std::cout << "Lowest score: "
<< minPlayer.score
<< " (" << minPlayer.name << ")\n";
std::cout << "Highest score: "
<< maxPlayer.score
<< " (" << maxPlayer.name << ")\n";
}Lowest score: 300 (Bob)
Highest score: 800 (Charlie)3. Financial Analysis
In financial analysis, you might need to find the lowest and highest prices of a stock over a period. std::ranges::minmax() helps in identifying these critical points efficiently.
#include <algorithm>
#include <iostream>
#include <vector>
int main() {
std::vector<double> stockPrices {
150.5, 200.0, 180.3, 220.1, 190.4 };
auto [minPrice, maxPrice] =
std::ranges::minmax(stockPrices);
std::cout << "Lowest price: $" << minPrice
<< "\nHighest price: $" << maxPrice;
}Lowest price: $150.5
Highest price: $220.1Summary
std::ranges::minmax() is versatile and can be applied in various domains such as data science, game development, and financial analysis.
It efficiently finds both the minimum and maximum elements in a range, which can be used for normalizing data, analyzing player scores, and identifying critical financial metrics.
Minimum and Maximum Algorithms
An introduction to the seven minimum and maximum algorithms in the C++ standard library: clamp(), min(), min_element(), max(), max_element(), minmax(), and minmax_element().