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1753题目链接 题目大意： 一个4乘4的棋盘，上面放满了正反两面分别为黑和白的棋子，翻转一个棋子会让这个棋子上下左右的棋子也翻转，给定一个初始状态，求使所有棋子颜色相同所需的最少翻转次数。 解题思路： 先检查翻转0个棋子时是否所有棋子颜色一致，若不一致则翻转1个棋子，依次类推，若翻转某n个棋子后成 阅读全文
posted @ 2019-03-07 14:01
bloglxc
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A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any p 阅读全文
posted @ 2019-03-06 13:47
bloglxc
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You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping yo 阅读全文
posted @ 2019-03-06 13:38
bloglxc
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Description Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N ≤ 100,00 阅读全文
posted @ 2019-03-03 18:12
bloglxc
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1、binary search tree Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definitio 阅读全文
posted @ 2019-01-28 17:16
bloglxc
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一种方法是用set存储出现过的指针，重复出现时就是有环： 1 class Solution { 2 public: 3 bool hasCycle(ListNode *head) { 4 set<ListNode*> st; 5 ListNode *p = head; 6 while(p) { 7 阅读全文
posted @ 2019-01-16 09:50
bloglxc
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Given a non-empty array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runti 阅读全文
posted @ 2019-01-14 17:56
bloglxc
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1、 输出：20 2、placeholder使用 可以先声明变量在定义： 输出：6 矩阵也可用上述方式声明。 或者： 3、创建一个矩阵： 4、矩阵运算 点乘： 相加：可以直接用加号 5、计算代价函数 阅读全文
posted @ 2019-01-08 20:39
bloglxc
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1、默认为大顶堆 运行结果： 2、小顶堆 运行结果： 3、自定义 运行结果： 阅读全文
posted @ 2019-01-05 19:58
bloglxc
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