DS Interview Question & Answer What is Random Projection? It is a unsupervised machine learning method to do the dimension reduction. It creates a minimum reduced dimension k which can make the new pairwise data distance preserved within an accepted error comparing to the original pairwise data d...
Each of the digits1-9must occur exactly once in each column. Each of the digits1-9must occur exactly once in each of the 93x3sub-boxes of the grid. The'.'character indicates empty cells. Example 1: Input:board = [["5","3",".",".","7",".",".",".","."],["6",".",...
比如LeetCodeNo.581最短无序连续子数组，和No643.子数组最大平均数，我就使用了不同的方法刷过三次...
43字符串相乘 Question 给定两个以字符串形式表示的非负整数num1和num2,返回num1和num2的乘积,它们的乘积也表示为字符串形式。 示例1: 输入: num1 ="2", num2 ="3"输出:"6" 示例2: 输入: num1 ="123", num2 ="456"输出:"56088" 说明: num1和num2的长度小于110。 num1和num2只包含数字0-9。
Can you solve this real interview question? Shortest Subarray with Sum at Least K - Given an integer array nums and an integer k, return the length of the shortest non-empty subarray of nums with a sum of at least k. If there is no such subarray, return
Question Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such thatnums[i] = nums[j]and theabsolutedifference between i and j is at most k. 本题难度easy。 集合法 ...
编写一个 SQL 查询,满足条件:无论 person 是否有地址信息,都需要基于上述两表提供 person 的以下信息: Code 代码语言:javascript 代码运行次数:0 运行 复制 FirstName, LastName, City, State sql 代码语言:javascript 代码运行次数:0 运行 复制 select FirstName,LastName,City,State from Person p left join ...
72. Edit Distance Lint-623. K Edit Distance 425. Word Squares Question Numbers✨ Star !SecondThirdForthFifth 1-10 11-20 21-30 心得: heap 特别适合用于解决有 candidate pool 的问题 Releases No releases published Packages No packages published...
Question Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Note:Do not modify the linked list. Follow up: Can you solve it without using extra space? 本题难度Medium。有2种算法分别是: 集合法和快慢指针法 ...
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