LeetCode OJ：Combination Sum II (组合之和 II)
Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.Each numb...
Leetcoede 112 Path Sum 二叉树
二叉树的从叶子到根的和是否存在 /** * Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(...
LeetCode() Range Sum Query-mutable
http://www.java3z.com/cwbwebhome/article/article1/1369.html?id=4804http://www.cnblogs.com/zichi/p/4806998.html
LeetCode OJ 40. Combination Sum II
Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.Each numb...
TFboy养成记 tf.cast,tf.argmax，tf.reduce_sum
referrence: 莫烦视频先介绍几个函数1.tf.cast()英文解释:也就是说cast的直译，类似于映射，映射到一个你制定的类型。2.tf.argmax 原型：含义：返回最大值所在的坐标。（谁给翻译下最后一句？？？）ps:谁给解释下axis最后一句话？例子：3.tf.reduce_mean(...
[LeetCode]题解（python）：124-Binary Tree Maximum Path Sum
题目来源：https://leetcode.com/problems/binary-tree-maximum-path-sum/题意分析：给定一棵树，找出一个数值最大的路径，起点可以是任意节点或者叶子。题目思路：我们可以先找路径的最大mr,ml，那么最大值是max（solve(root),solve...
sqlserver可将字符转成数字再进行sum，如果varchar类型中存放的都是数字
sqlserver语法：select sum(cast(score as int)) as score from 表名;注意：int是整型，在实际操作中根据自己需要的类型转换。
【leetcode】Path Sum I & II（middle）
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.Fo...
oracle having sum group by 详解
Aggregate functions (like SUM) often need an added GROUP BY functionality.集合函数（类似SUM）经常需要用GROUP BY来进行功能性的补充。GROUP BY... GROUP BY... was added to SQL b...
【LeetCode】112. Path Sum
题目：Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum...
HDU 3415 Max Sum of Max-K-sub-sequence【单调队列】
<题目链接>题目大意：给你一段从1~N的圆形序列，要你求出这段圆形序列中长度不超过K的最大连续子序列之和是多少，并且输出这子序列的起点和终点。解题分析：既然是求连续子序列之和，我们不妨将这段序列的前缀和算出来。因为本题规定了序列的最长长度，很容易想到单调队列，我们可以用一个单调队列去维护...
LeetCode: Binary Tree Maximum Path Sum 解题报告
Binary Tree Maximum Path SumGiven a binary tree, find the maximum path sum.The path may start and end at any node in the tree.For example:Given the be...
N Sum
题目：N Sum描述： Given an array of integers, return indices of the two numbers such that they add up to a specific target.You may assume that each input wo...
LeetCode解题报告—— Container With Most Water & 3Sum Closest & Letter Combinations of a Phone Number
1. Container With Most WaterGiven n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are ...
LeetCode 16. 3Sum Closest(最接近的三数之和)
LeetCode 16. 3Sum Closest(最接近的三数之和)
3Sum Closest leetcode java
题目：Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sumof the three integer...
LeetCode之“散列表”：Two Sum && 3Sum && 3Sum Closest && 4Sum
1. Two Sum题目链接题目要求：Given an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return i...
HDU 1003：Max Sum（DP，连续子段和）
Max SumTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 292444 Accepted Submission(s): 69379...
HDU 4704 Sum（隔板原理+组合数求和公式+费马小定理+快速幂）
题目传送：http://acm.hdu.edu.cn/showproblem.php?pid=4704Problem DescriptionSample Input2Sample Output2Hint1. For N = 2, S(1) = S(2) = 1.2. The input file c...
LeetCode 15. 3Sum（三数之和）
Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of ...