47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#pragma once
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#include <array>
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#include <cstddef>
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#include <cstdint>
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#include <utility>
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#include <vector>
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void Random_Init(uint32_t seed);
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uint32_t Random(int min, int max);
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double RandomDouble();
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//Get a random element from a vector or array
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template <typename T>
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T RandomElement(std::vector<T>& vector, bool erase) {
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const auto idx = Random(0, vector.size());
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const T selected = vector[idx];
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if (erase) {
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vector.erase(vector.begin() + idx);
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}
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return selected;
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}
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template <typename Container>
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auto& RandomElement(Container& container) {
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return container[Random(0, std::size(container))];
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}
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template <typename Container>
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const auto& RandomElement(const Container& container) {
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return container[Random(0, std::size(container))];
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}
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//Shuffle items within a vector or array
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template <typename T>
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void Shuffle(std::vector<T>& vector) {
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for (std::size_t i = 0; i + 1 < vector.size(); i++)
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{
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std::swap(vector[i], vector[Random(i, vector.size())]);
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}
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}
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template <typename T, std::size_t size>
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void Shuffle(std::array<T, size>& arr) {
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for (std::size_t i = 0; i + 1 < arr.size(); i++)
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{
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std::swap(arr[i], arr[Random(i, arr.size())]);
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}
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}
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