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
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。
Given an integer arraynumsand an integerk, returnthe length of the shortest non-emptysubarrayofnumswith a sum of at leastk. If there is no suchsubarray, return-1. Asubarrayis acontiguouspart of an array. Example 1: Input:nums = [1], k = 1Output:1 Example 2: Input:nums = [1,2]...
代码实现varvalidIPAddress=function(queryIP){constv4Arr=queryIP.split('.')constv4Reg=/^[0-9]{1,3}$/gconstv6Reg=/^[0-9a-fA-F]{1,4}(:[0-9a-fA-F]{1,4}){7}$/gif(v4Arr.length===4){for(leti=0;i<4;i++){letitem=v4Arr[i]v4Reg.lastIndex=0if(!v4Reg.test(i...
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 Follow up for problem “Populating Next Right Pointers in Each Node”. What if the given tree could be any binary tree? Would your previous solution still work? Note: You may only use constant extra space. For example, Given the following binary tree, 1 / \ 2 3 / \...
64 changes: 64 additions & 0 deletions 64 leetcode-cn/originData/[no content]find-the-last-marked-nodes-in-tree.json Original file line numberDiff line numberDiff line change @@ -0,0 +1,64 @@ { "data": { "question": { "questionId": "3497", "questionFrontendId": "3313", "...
Question Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). Find the minimum element. You may assume no duplicate exists in the array. ...
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 ...
Question: Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 给一个罗马数字,把它转化成阿拉伯数字,可以保证罗马数字的输入在1到3999之间。 这个题和我上篇文章写的《leetcode:Integer to Roman(整数转化为罗马数字》正好相反,在上一篇文章中,...