Zu3zz / Learn_some_algorithm_and_data_structure
从零开始回顾一下最简单最基础的算法与数据结构
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一起来学习数据结构与算法吧
一些常用经典算法和数据结构的回顾
首先是最经典的排序问题
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排序
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选择排序(Selection Sort)复杂度 O(n^2)
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插入排序(Insertion Sort)复杂度 O(n^2)
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改进的插入排序(取消了交换操作)
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冒泡排序(Bubble Sort)
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希尔排序(Shell Sort)
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归并排序(Merge Sort)复杂度 O(n*logn)
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归并排序自底向上版(Merge Sort Buttom Up)
不先对数组进行二分 直接以 1、2、4 这样大小循环合并直至数组全部合并完成
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快速排序(Quick Sort)
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快速排序存在的两点问题
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此时 使用双路快排(hard)😱
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三路快排
- 这是初始排序的情况
- 此时是排序完毕的情况
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堆(优先队列)
- 二叉堆
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排序算法总结
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最大索引堆
- 基础 添加index用来记录当前索引堆每个元素所在的位置
- 优化 添加reverse行用来存储索引对应index中的数
- reverse数组more detail
- 二项堆
- 斐波那契堆
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