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0.1. 关于本书
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0.1. 关于本书
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<nav class="md-nav md-nav--secondary" aria-label="目录">
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0.1.1. 读者对象
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0.1.2. 内容结构
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0.1.3. 致谢
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1.1. 算法无处不在
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1.2. 算法是什么
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1.3. 小结
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2. 复杂度分析
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<span class="md-nav__icon md-icon"></span>
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2. 复杂度分析
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2.1. 算法效率评估
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</a>
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</li>
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<li class="md-nav__item">
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2.2. 时间复杂度
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</a>
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<a href="../../chapter_computational_complexity/space_complexity/" class="md-nav__link">
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2.3. 空间复杂度
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_computational_complexity/summary/" class="md-nav__link">
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2.4. 小结
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</a>
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</nav>
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4" >
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<label class="md-nav__link" for="__nav_4" id="__nav_4_label" tabindex="0">
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3. 数据结构与类型
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<span class="md-nav__icon md-icon"></span>
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</label>
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_4_label" aria-expanded="false">
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<label class="md-nav__title" for="__nav_4">
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<span class="md-nav__icon md-icon"></span>
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3. 数据结构与类型
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="../../chapter_data_structure/classification_of_data_structure/" class="md-nav__link">
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3.1. 数据结构分类
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_data_structure/basic_data_types/" class="md-nav__link">
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3.2. 基本数据类型
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_data_structure/number_encoding/" class="md-nav__link">
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3.3. 数字编码 *
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_data_structure/character_encoding/" class="md-nav__link">
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3.4. 字符编码 *
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</a>
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<li class="md-nav__item">
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<a href="../../chapter_data_structure/summary/" class="md-nav__link">
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3.5. 小结
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</a>
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</ul>
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</nav>
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<label class="md-nav__link" for="__nav_5" id="__nav_5_label" tabindex="0">
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4. 数组与链表
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</label>
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<label class="md-nav__title" for="__nav_5">
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<span class="md-nav__icon md-icon"></span>
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4. 数组与链表
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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4.1. 数组
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</a>
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<li class="md-nav__item">
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4.2. 链表
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</a>
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</li>
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<li class="md-nav__item">
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4.3. 列表
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</a>
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<li class="md-nav__item">
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<a href="../../chapter_array_and_linkedlist/summary/" class="md-nav__link">
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4.4. 小结
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</a>
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</nav>
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<li class="md-nav__item md-nav__item--section md-nav__item--nested">
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<label class="md-nav__link" for="__nav_6" id="__nav_6_label" tabindex="0">
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5. 栈与队列
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</label>
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_6_label" aria-expanded="false">
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<label class="md-nav__title" for="__nav_6">
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<span class="md-nav__icon md-icon"></span>
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5. 栈与队列
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="../../chapter_stack_and_queue/stack/" class="md-nav__link">
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5.1. 栈
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_stack_and_queue/queue/" class="md-nav__link">
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5.2. 队列
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_stack_and_queue/deque/" class="md-nav__link">
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5.3. 双向队列
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_stack_and_queue/summary/" class="md-nav__link">
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5.4. 小结
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</a>
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</li>
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</ul>
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</nav>
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</li>
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<li class="md-nav__item md-nav__item--section md-nav__item--nested">
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7" >
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<label class="md-nav__link" for="__nav_7" id="__nav_7_label" tabindex="0">
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6. 散列表
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<span class="md-nav__icon md-icon"></span>
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</label>
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_7_label" aria-expanded="false">
|
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<label class="md-nav__title" for="__nav_7">
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<span class="md-nav__icon md-icon"></span>
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6. 散列表
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="../../chapter_hashing/hash_map/" class="md-nav__link">
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6.1. 哈希表
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_hashing/hash_collision/" class="md-nav__link">
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6.2. 哈希冲突处理
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_hashing/summary/" class="md-nav__link">
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6.3. 小结
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</a>
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</li>
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</ul>
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</nav>
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</li>
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<li class="md-nav__item md-nav__item--section md-nav__item--nested">
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8" >
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<label class="md-nav__link" for="__nav_8" id="__nav_8_label" tabindex="0">
|
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7. 树
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<span class="md-nav__icon md-icon"></span>
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</label>
|
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_8_label" aria-expanded="false">
|
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<label class="md-nav__title" for="__nav_8">
|
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<span class="md-nav__icon md-icon"></span>
|
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7. 树
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="../../chapter_tree/binary_tree/" class="md-nav__link">
|
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7.1. 二叉树
|
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_tree/binary_tree_traversal/" class="md-nav__link">
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7.2. 二叉树遍历
|
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_tree/array_representation_of_tree/" class="md-nav__link">
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7.3. 二叉树数组表示
|
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_tree/binary_search_tree/" class="md-nav__link">
|
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7.4. 二叉搜索树
|
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_tree/avl_tree/" class="md-nav__link">
|
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7.5. AVL 树 *
|
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</a>
|
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_tree/summary/" class="md-nav__link">
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7.6. 小结
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</a>
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</li>
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</ul>
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</nav>
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</li>
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<li class="md-nav__item md-nav__item--section md-nav__item--nested">
|
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_9" >
|
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<label class="md-nav__link" for="__nav_9" id="__nav_9_label" tabindex="0">
|
|
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8. 堆
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|
|
<span class="md-nav__icon md-icon"></span>
|
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</label>
|
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|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_9_label" aria-expanded="false">
|
|
|
<label class="md-nav__title" for="__nav_9">
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
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8. 堆
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
|
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<li class="md-nav__item">
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<a href="../../chapter_heap/heap/" class="md-nav__link">
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|
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8.1. 堆
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_heap/build_heap/" class="md-nav__link">
|
|
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8.2. 建堆操作 *
|
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|
</a>
|
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_heap/summary/" class="md-nav__link">
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8.3. 小结
|
|
|
</a>
|
|
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</li>
|
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</ul>
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</nav>
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</li>
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<li class="md-nav__item md-nav__item--section md-nav__item--nested">
|
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_10" >
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<label class="md-nav__link" for="__nav_10" id="__nav_10_label" tabindex="0">
|
|
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9. 图
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
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</label>
|
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|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_10_label" aria-expanded="false">
|
|
|
<label class="md-nav__title" for="__nav_10">
|
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|
<span class="md-nav__icon md-icon"></span>
|
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9. 图
|
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
|
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<li class="md-nav__item">
|
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<a href="../../chapter_graph/graph/" class="md-nav__link">
|
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9.1. 图
|
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</a>
|
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</li>
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<li class="md-nav__item">
|
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<a href="../../chapter_graph/graph_operations/" class="md-nav__link">
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9.2. 图基础操作
|
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_graph/graph_traversal/" class="md-nav__link">
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9.3. 图的遍历
|
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</a>
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</li>
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<li class="md-nav__item">
|
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<a href="../../chapter_graph/summary/" class="md-nav__link">
|
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9.4. 小结
|
|
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</a>
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</li>
|
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</ul>
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</nav>
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</li>
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<li class="md-nav__item md-nav__item--section md-nav__item--nested">
|
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_11" >
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<label class="md-nav__link" for="__nav_11" id="__nav_11_label" tabindex="0">
|
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10. 搜索算法
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
</label>
|
|
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|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_11_label" aria-expanded="false">
|
|
|
<label class="md-nav__title" for="__nav_11">
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
10. 搜索算法
|
|
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</label>
|
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<ul class="md-nav__list" data-md-scrollfix>
|
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<li class="md-nav__item">
|
|
|
<a href="../../chapter_searching/binary_search/" class="md-nav__link">
|
|
|
10.1. 二分查找（New）
|
|
|
</a>
|
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</li>
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<li class="md-nav__item">
|
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<a href="../../chapter_searching/binary_search_edge/" class="md-nav__link">
|
|
|
10.2. 二分查找边界（New）
|
|
|
</a>
|
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</li>
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<li class="md-nav__item">
|
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<a href="../../chapter_searching/replace_linear_by_hashing/" class="md-nav__link">
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10.3. 哈希优化策略
|
|
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_searching/searching_algorithm_revisited/" class="md-nav__link">
|
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10.4. 重识搜索算法
|
|
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</a>
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</li>
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<li class="md-nav__item">
|
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<a href="../../chapter_searching/summary/" class="md-nav__link">
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10.5. 小结
|
|
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</a>
|
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</li>
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</ul>
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</nav>
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</li>
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<label class="md-nav__link" for="__nav_12" id="__nav_12_label" tabindex="0">
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11. 排序算法
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<span class="md-nav__icon md-icon"></span>
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</label>
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_12_label" aria-expanded="false">
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<label class="md-nav__title" for="__nav_12">
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<span class="md-nav__icon md-icon"></span>
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11. 排序算法
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</label>
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<li class="md-nav__item">
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<a href="../../chapter_sorting/sorting_algorithm/" class="md-nav__link">
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11.1. 排序算法
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../../chapter_sorting/selection_sort/" class="md-nav__link">
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11.2. 选择排序(New)
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</a>
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<a href="../../chapter_sorting/bubble_sort/" class="md-nav__link">
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11.3. 冒泡排序
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</a>
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<a href="../../chapter_sorting/insertion_sort/" class="md-nav__link">
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11.4. 插入排序
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</a>
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<li class="md-nav__item">
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<a href="../../chapter_sorting/quick_sort/" class="md-nav__link">
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11.5. 快速排序
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</a>
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<li class="md-nav__item">
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<a href="../../chapter_sorting/merge_sort/" class="md-nav__link">
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11.6. 归并排序
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</a>
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<a href="../../chapter_sorting/bucket_sort/" class="md-nav__link">
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11.7. 桶排序
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</a>
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<a href="../../chapter_sorting/counting_sort/" class="md-nav__link">
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11.8. 计数排序
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<a href="../../chapter_sorting/radix_sort/" class="md-nav__link">
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11.9. 基数排序
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</a>
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<a href="../../chapter_sorting/summary/" class="md-nav__link">
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11.10. 小结
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</a>
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12. 回溯算法
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<span class="md-nav__icon md-icon"></span>
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12. 回溯算法
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12.1. 回溯算法（New）
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<a href="../../chapter_backtracking/permutations_problem/" class="md-nav__link">
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12.2. 全排列问题（New）
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<a href="../../chapter_backtracking/n_queens_problem/" class="md-nav__link">
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12.3. N 皇后问题（New）
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13. 附录
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_14_label" aria-expanded="false">
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13. 附录
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13.1. 编程环境安装
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</a>
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13.2. 一起参与创作
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</a>
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<div class="md-nav__link md-nav__link--index ">
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<a href="../../chapter_reference/">参考文献</a>
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</div>
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_15_label" aria-expanded="false">
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<label class="md-nav__title" for="__nav_15">
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<span class="md-nav__icon md-icon"></span>
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参考文献
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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</ul>
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</nav>
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</div>
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</div>
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</div>
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<div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" >
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<div class="md-sidebar__scrollwrap">
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<div class="md-sidebar__inner">
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<nav class="md-nav md-nav--secondary" aria-label="目录">
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<label class="md-nav__title" for="__toc">
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<span class="md-nav__icon md-icon"></span>
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目录
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</label>
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<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="#011" class="md-nav__link">
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0.1.1. 读者对象
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</a>
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<li class="md-nav__item">
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<a href="#012" class="md-nav__link">
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0.1.2. 内容结构
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</a>
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<li class="md-nav__item">
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<a href="#013" class="md-nav__link">
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0.1.3. 致谢
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</a>
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</li>
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</ul>
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</nav>
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</div>
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</div>
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</div>
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<div class="md-content" data-md-component="content">
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<article class="md-content__inner md-typeset">
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<a href="https://github.com/krahets/hello-algo/tree/main/docs/chapter_preface/about_the_book.md" title="编辑此页" class="md-content__button md-icon">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M10 20H6V4h7v5h5v3.1l2-2V8l-6-6H6c-1.1 0-2 .9-2 2v16c0 1.1.9 2 2 2h4v-2m10.2-7c.1 0 .3.1.4.2l1.3 1.3c.2.2.2.6 0 .8l-1 1-2.1-2.1 1-1c.1-.1.2-.2.4-.2m0 3.9L14.1 23H12v-2.1l6.1-6.1 2.1 2.1Z"/></svg>
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</a>
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<h1 id="01">0.1. 关于本书<a class="headerlink" href="#01" title="Permanent link">¶</a></h1>
|
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<p>本项目旨在创建一本开源免费、新手友好的数据结构与算法入门教程。</p>
|
|
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<ul>
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<li>全书采用动画图解，结构化地讲解数据结构与算法知识，内容清晰易懂、学习曲线平滑；</li>
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<li>算法源代码皆可一键运行，支持 Java, C++, Python, Go, JS, TS, C#, Swift, Zig 等语言；</li>
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<li>鼓励读者在章节讨论区互帮互助、共同进步，提问与评论通常可在两日内得到回复；</li>
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</ul>
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<h2 id="011">0.1.1. 读者对象<a class="headerlink" href="#011" title="Permanent link">¶</a></h2>
|
|
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<p>若您是「算法初学者」，从未接触过算法，或者已经有一些刷题经验，对数据结构与算法有模糊的认识，在会与不会之间反复横跳，那么这本书正是为您量身定制！</p>
|
|
|
<p>如果您是「算法老手」，已经积累一定刷题量，熟悉大部分题型，那么本书可助您回顾与梳理算法知识体系，仓库源代码可以被当作“刷题工具库”或“算法字典”来使用。</p>
|
|
|
<p>若您是「算法专家」，我们期待收到您的宝贵建议，或者<a href="https://www.hello-algo.com/chapter_appendix/contribution/">一起参与创作</a>。</p>
|
|
|
<div class="admonition success">
|
|
|
<p class="admonition-title">前置条件</p>
|
|
|
<p>您需要至少具备任一语言的编程基础，能够阅读和编写简单代码。</p>
|
|
|
</div>
|
|
|
<h2 id="012">0.1.2. 内容结构<a class="headerlink" href="#012" title="Permanent link">¶</a></h2>
|
|
|
<p>本书主要内容包括：</p>
|
|
|
<ul>
|
|
|
<li><strong>复杂度分析</strong>：数据结构与算法的评价维度、算法效率的评估方法。时间复杂度、空间复杂度，包括推算方法、常见类型、示例等。</li>
|
|
|
<li><strong>数据结构</strong>：常见基本数据类型，数据在内存中的存储形式、数据结构的分类方法。涉及数组、链表、栈、队列、散列表、树、堆、图等数据结构，内容包括定义、优缺点、常用操作、常见类型、典型应用、实现方法等。</li>
|
|
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<li><strong>算法</strong>：查找算法、排序算法、搜索与回溯、动态规划、分治算法等，内容涵盖定义、应用场景、优缺点、时空效率、实现方法、示例题目等。</li>
|
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</ul>
|
|
|
<p><img alt="Hello 算法内容结构" src="../about_the_book.assets/hello_algo_mindmap.png" /></p>
|
|
|
<p align="center"> Fig. Hello 算法内容结构 </p>
|
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<h2 id="013">0.1.3. 致谢<a class="headerlink" href="#013" title="Permanent link">¶</a></h2>
|
|
|
<p>在本书的创作过程中，我得到了许多人的帮助，包括但不限于：</p>
|
|
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<ul>
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<li>感谢我在公司的导师李汐博士，在深入交谈中您鼓励我“行动起来”，坚定了我写这本书的决心。</li>
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<li>感谢我的女朋友泡泡作为本书的首位读者，从算法小白的角度提出许多宝贵建议，使得本书更适合新手阅读。</li>
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<li>感谢腾宝、琦宝、飞宝为本书起了一个富有创意的名字，唤起大家写下第一行代码 "Hello World!" 的美好回忆。</li>
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<li>感谢苏潼为本书设计了精美的封面和 LOGO，并在我的强迫症下多次耐心修改。</li>
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<li>感谢 @squidfunk 提供的写作排版建议，以及杰出的开源项目 <a href="https://github.com/squidfunk/mkdocs-material/tree/master">Material-for-MkDocs</a> 。</li>
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</ul>
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<p>在写作过程中，我阅读了许多关于数据结构与算法的教材和文章。这些作品为本书提供了优秀的范本，确保了本书内容的准确性与品质。在此感谢所有老师和前辈们的杰出贡献！</p>
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<p>本书倡导“手脑并用”的学习方法，在此方面深受《动手学深度学习》的启发。在此向各位读者强烈推荐这本优秀著作，包括<a href="https://github.com/d2l-ai/d2l-zh">中文版</a>、<a href="https://github.com/d2l-ai/d2l-en">英文版</a>、<a href="https://space.bilibili.com/1567748478">李沐老师 bilibili 主页</a>。</p>
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<p>衷心感谢我的父母，正是你们一直以来的支持与鼓励，让我有机会做这些富有趣味的事。</p>
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