75 lines
1.2 KiB
C++
75 lines
1.2 KiB
C++
/**
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* @file dl_range_find.h
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* @brief 查找
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*
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*
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* @version 1.0
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* @author lveyou
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* @date 23-06-22
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*
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* @note
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*/
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#pragma once
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#include "base/dl_vector2.h"
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//! 查找算法
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namespace dl::Find
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{
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/**
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* @brief find，返回下标
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* @note 失败返回-1
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*/
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template<typename T, typename V>
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size_t FirstIndex(const T& container, const V& v)
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{
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for (size_t i = 0; i < container.size(); ++i)
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{
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if (container[i] == v)
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{
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return i;
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}
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}
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return -1;
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}
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/**
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* @brief find，返回下标
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* @note 失败返回 -1, -1
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*/
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//template<typename T, typename V>
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//SizeT FirstIndex(const Vector2<T, size_t>& container, const V& v)
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//{
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// for (size_t j = 0; j < container.GetHeight(); ++j)
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// {
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// for (size_t i = 0; i < container.GetWidth(); ++i)
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// {
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// if (container.Get(j, i) == v)
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// {
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// return { i, j };
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// }
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// }
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// }
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// return { -1_zu, -1_zu };
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//}
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/**
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* @brief find，返回指针
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* @note 失败返回nullptr
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*/
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template<typename C, typename F>
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auto FirstYes(C& container, F func)
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{
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for (auto& iter : container)
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{
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if (func(iter))
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{
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return &iter;
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}
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}
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using V = std::decay_t<decltype(container)>;
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using T = typename V::value_type;
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return (T*)nullptr;
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}
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} |