leetcode 111 Minimum Depth of Binary Tree(DFS)
Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the nearest le...
LeetCode 111. Minimum Depth of Binary Tree (二叉树最小的深度)
Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the nearest le...
Java [Leetcode 111]Minimum Depth of Binary Tree
题目描述:Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the neare...
[LeetCode] 111. Minimum Depth of Binary Tree ☆(二叉树的最小深度)
[Leetcode] Maximum and Minimum Depth of Binary Tree 二叉树的最小最大深度 (最小有3种解法)描述解析递归深度优先搜索当求最大深度时,我们只要在左右子树中取较大的就行了。然而最小深度时,如果左右子树中有一个为空会返回0,这时我们是不能算做有效深度的。...
leetcode 111 Minimum Depth of Binary Tree ----- java
Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the nearest le...
Java for LeetCode 111 Minimum Depth of Binary Tree
Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the nearest le...
Leetcode 111 Minimum Depth of Binary Tree 二叉树
找出最短的从叶子到根的路径长可以回忆Maximum Depth of Binary Tree的写法,只不过在!root,我把它改成了10000000,还有max函数改成了min函数,最后的值如果是10000000,毫无疑问这棵树肯定为空,因此在最后有(d>=1000000)?0:d; /** ...
UVa10791 - Minimum Sum LCM
分析即为紫薯上的分析。难点是发现当每个aipi作为一个单独的整数时才最优。。答案就是将所有不同的 相同因子的积 相加即可代码:#include<cstdio>#include<cstring>#include<iostream>#include<algori...
【LeetCode】1085. Sum of Digits in the Minimum Number 解题报告(C++)
作者: 负雪明烛id: fuxuemingzhu个人博客:http://fuxuemingzhu.cn/目录题目描述题目大意解题方法遍历日期题目地址:https://leetcode-cn.com/problems/sum-of-digits-in-the-minimum-number/题目描述Gi...
【2018 ICPC亚洲区域赛徐州站 A】Rikka with Minimum Spanning Trees(求最小生成树个数与总权值的乘积)
Hello everyone! I am your old friend Rikka. Welcome to Xuzhou. This is the first problem, which is a problem about the minimum spanning tree (MST). I ...
codejam环境熟悉—Minimum Scalar Product
今天准备熟悉一下codejam的在线编程,为google的笔试做准备,因此按照codejam上对新手的建议,先用了一个简单的题目来弄清楚流程。记录一下需要注意的地方。 1.输入输出输入输出重定位即可,拿Minimum Scalar Product这个例子示例如下:#include <iostr...
HDU 6214 Smallest Minimum Cut(最少边最小割)
Problem DescriptionConsider a network G=(V,E) with source s and sink t. An s-t cut is a partition of nodes set V into two parts such that s and t belo...
LeetCode 1249. Minimum Remove to Make Valid Parentheses
原题链接在这里:https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses/题目:Given a string s of '(' , ')' and lowercase English characters.Your ...
【leetcode】921. Minimum Add to Make Parentheses Valid
题目如下:解题思路:上周都在忙着参加CTF,没时间做题,今天来更新一下博客吧。括号问题在leetcode中出现了很多,本题的解题思路和以前的括号问题一样,使用栈。遍历Input,如果是'('直接入栈;如果是')'则判断栈顶是否为'(',如果栈顶是'(',栈顶元素出栈,否则要加括号的count加1。遍...
【LeetCode】Find Minimum in Rotated Sorted Array 找到旋转后有序数组中的最小值
本文为大便一箩筐的原创内容,转载请注明出处,谢谢:http://www.cnblogs.com/dbylk/p/4032570.html原题:Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e...
HDU 1385 Minimum Transport Cost 最短路径题解
本题就是使用Floyd算法求所有路径的最短路径,并且需要保存路径,而且更进一步需要按照字典顺序输出结果。 还是有一定难度的。 Floyd有一种很巧妙的记录数据的方法,大多都是使用这个方法记录数据的。 不过其实本题数据不是很大,一般太大的数据也无法使用Floyd,因为效率是O(N^3)。 所以其实也...
HDU 1385 Minimum Transport Cost(多源最短路径+路径记录)
p[i][j]记录从i到j的路径上的下一个结点(后继),修改最短路时更新即可。 void floyd(){ for(int k=1;k<=n;k++) for(int i=1;i<=n;i++) for(int j=1;j<=n;j++)...
[HDU] 1394 Minimum Inversion Number [线段树求逆序数]
Minimum Inversion NumberTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11788 Accepted Subm...
hdu - 1394 Minimum Inversion Number(线段树水题)
http://acm.hdu.edu.cn/showproblem.php?pid=1394很基础的线段树.先查询在更新,如果后面的数比前面的数小肯定会查询到前面已经更新过的值,这时候返回的sum就是当前数的逆序数.这样查询完之后得到初始数列的逆序数,要求得所有序列的最小逆序数,还需要循环一次.设初...
HDU 1394 Minimum Inversion Number 线段树
题目: http://acm.hdu.edu.cn/showproblem.php?pid=1394没看到多组输入,WA了一万次。。。。。。其实很简单,有人暴力过得,我感觉归并排序、二叉排序树求逆序数都可以,但是我没写。 #include <stdio.h> #include <s...