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GitHub
7 年
『数据结构』Fibonacci-heap
斐波那契堆是一系列具有最小堆序的有根树的集合, 同一代(层)结点由双向循环链表链接, 为了便于删除最小结点, 还需要维持链表为升序, 即nd<=nd.right(nd==nd.right时只有一个结点或为 None), 父子之间都有指向对方的指针. 结点有degree 属性, 记录孩子的个数, mark 属性 ...
GitHub
19 年
先从一道题目开始~
给定一个三角形,找出自顶向下的最小路径和。每一步只能移动到下一行中相邻的结点上。 例如,给定三角形: [ [2], [3,4], [6,5,7], [4,1,8,3] ] 自顶向下的最小路径和为 11(即,2 + 3 + 5 + 1 = 11)。
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