dldldl1994-优快云博客

原创广联达二面

1、自我介绍主要包括兴趣爱好、特长、家乡、家庭情况、学习成绩等。2.自我评价说三个关键词来形容一下自己三个词评价你自己并举出例子。我认为最能概括自己的三个词是：学习、心态、执行力。学习包括两个方面，有随时学习的意识和良好的学习方法。遇到不懂的东西就马上去学习，上网查资料，向同行的高手学习，这都是我经常用的学习方法。心态好，遇到困难不会被困难吓住，不会退缩，我会尽自己最大的努力来解决。执行力：执行力强，我每天坚持学习，写总结反思自己。不管是遇到什么情况，哪怕是过年过节，自己生病、出差在外，我都

2020-10-21 19:04:14 2430 1

原创 TP 面经

作者：workingInShenghuaBuliding链接：https://www.nowcoder.com/discuss/502650?type=post&order=time&pos=&page=1&channel=1009&source_id=search_post来源：牛客网问考研还是保研，大学成绩排名，研究方向偏硬件还是算法，学过的和电路通信有关的课程，说说你知道的市场里的硬件公司，输出功率匹配(回答输出电阻和输入电阻相等)，为什么是共轭匹配(我不

2020-09-24 15:06:03 1437 1

原创 LeetCode 刷题记录 95. Unique Binary Search Trees II

题目：Given an integer n, generate all structurally unique BST’s (binary search trees) that store values 1 … n.Example:Input: 3Output:[[1,null,3,2],[3,2,null,1],[3,1,null,null,2],[2,1,3],[1,nul...

2020-01-13 22:01:18 298

原创 LeetCode 刷题记录 96. Unique Binary Search Trees

题目：Given n, how many structurally unique BST’s (binary search trees) that store values 1 … n?Example:Input: 3Output: 5Explanation:Given n = 3, there are a total of 5 unique BST’s:1 3 ...

2020-01-13 19:34:02 186

原创 LeetCode 刷题记录 89. Gray Code

题目：The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integer n representing the total number of bits in the code, print the sequence of...

2019-12-11 20:21:17 168

原创 LeetCode 刷题记录 88. Merge Sorted Array

题目：Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array.Note:The number of elements initialized in nums1 and nums2 are m and n respectively.You may assume th...

2019-12-09 21:10:34 146

原创 LeetCode 刷题记录 86. Partition List

题目：Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x.You should preserve the original relative order of the nodes in each o...

2019-12-04 22:38:55 133

原创 LeetCode 刷题记录 82. Remove Duplicates from Sorted List II

题目：Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list.Example 1:Input: 1->2->3->3->4->4->5Output: 1-&g...

2019-11-30 13:45:15 134

原创 LeetCode 刷题记录 83. Remove Duplicates from Sorted List

题目：Given a sorted linked list, delete all duplicates such that each element appear only once.Example 1:Input: 1->1->2Output: 1->2Example 2:Input: 1->1->2->3->3Output: 1-&gt...

2019-11-27 21:47:10 112

原创 LeetCode 刷题记录 81. Search in Rotated Sorted Array II

题目：Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand.(i.e., [0,0,1,2,2,5,6] might become [2,5,6,0,0,1,2]).You are given a target value to search. If foun...

2019-11-27 12:46:47 127

原创 LeetCode 刷题记录 80. Remove Duplicates from Sorted Array II

题目：Given a sorted array nums, remove the duplicates in-place such that duplicates appeared at most twice and return the new length.Do not allocate extra space for another array, you must do this by ...

2019-11-25 20:06:06 140

原创 LeetCode 刷题记录61. Rotate List

题目：Given a linked list, rotate the list to the right by k places, where k is non-negative.Example 1:Input: 1->2->3->4->5->NULL, k = 2Output: 4->5->1->2->3->NULLExpla...

2019-11-24 14:02:11 126

原创 LeetCode 刷题记录 90. Subsets II

题目：Given a collection of integers that might contain duplicates, nums, return all possible subsets (the power set).Note: The solution set must not contain duplicate subsets.Example:Input: [1,2,2]...

2019-11-23 16:48:44 130

原创 LeetCode 刷题记录 78. Subsets

题目：Given a set of distinct integers, nums, return all possible subsets (the power set).Note: The solution set must not contain duplicate subsets.Example:Input: nums = [1,2,3]Output:[[3],[1],[...

2019-11-23 16:31:37 117

原创 LeetCode 刷题记录 79. Word Search

题目：Given a 2D board and a word, find if the word exists in the grid.The word can be constructed from letters of sequentially adjacent cell, where “adjacent” cells are those horizontally or verticall...

2019-11-22 22:21:36 185

原创 LeetCode 刷题记录 77. Combinations

题目：Given two integers n and k, return all possible combinations of k numbers out of 1 … n.Example:Input: n = 4, k = 2Output:[[2,4],[3,4],[2,3],[1,2],[1,3],[1,4],]解法1：递归法c++：class Solut...

2019-11-10 16:17:29 170

原创 LeetCode 刷题记录 75. Sort Colors

题目：Given an array with n objects colored red, white or blue, sort them in-place so that objects of the same color are adjacent, with the colors in the order red, white and blue.Here, we will use the...

2019-11-07 23:15:59 175

原创 LeetCode 刷题记录74. Search a 2D Matrix

题目：Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties:Integers in each row are sorted from left to right.The first integer of each r...

2019-11-04 20:29:34 121

原创 LeetCode 刷题记录73. Set Matrix Zeroes

题目：Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in-place.Example 1:Input:[[1,1,1],[1,0,1],[1,1,1]]Output:[[1,0,1],[0,0,0],[1,0,1]]Example 2:Input...

2019-11-03 22:09:27 130

原创 LeetCode 刷题记录 71. Simplify Path

题目：Given an absolute path for a file (Unix-style), simplify it. Or in other words, convert it to the canonical path.In a UNIX-style file system, a period . refers to the current directory. Furthermo...

2019-11-02 16:49:34 200

原创 LeetCode 刷题记录 66. Plus One

题目：Given a non-empty array of digits representing a non-negative integer, plus one to the integer.The digits are stored such that the most significant digit is at the head of the list, and each elem...

2019-10-25 22:28:59 161

原创 LeetCode 刷题记录 67. Add Binary

题目：Given two binary strings, return their sum (also a binary string).The input strings are both non-empty and contains only characters 1 or 0.Example 1:Input: a = “11”, b = “1”Output: “100”Examp...

2019-10-25 21:39:54 114

原创 LeetCode 刷题记录 69. Sqrt(x)

题目：Implement int sqrt(int x).Compute and return the square root of x, where x is guaranteed to be a non-negative integer.Since the return type is an integer, the decimal digits are truncated and on...

2019-10-25 21:35:29 215

原创 LeetCode 刷题记录 70. Climbing Stairs

题目：You are climbing a stair case. It takes n steps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?Note: Given n will be a positi...

2019-10-25 21:04:22 119

原创 LeetCode 刷题记录 60. Permutation Sequence

题目：The set [1,2,3,…,n] contains a total of n! unique permutations.By listing and labeling all of the permutations in order, we get the following sequence for n = 3:“123”“132”“213”“231”“312”“32...

2019-10-11 23:01:01 178

原创 LeetCode 刷题记录 56. Merge Intervals

题目：Given a collection of intervals, merge all overlapping intervals.Example 1:Input: [[1,3],[2,6],[8,10],[15,18]]Output: [[1,6],[8,10],[15,18]]Explanation: Since intervals [1,3] and [2,6] overlap...

2019-10-11 22:29:15 143

原创 LeetCode 刷题记录57. Insert Interval

题目：Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals were initially sorted according to their start times.Exa...

2019-10-09 23:56:47 213

原创 LeetCode 刷题记录58. Length of Last Word

题目：Given a string s consists of upper/lower-case alphabets and empty space characters ’ ', return the length of last word in the string.If the last word does not exist, return 0.Note: A word is def...

2019-10-07 21:51:42 127

原创 LeetCode 刷题记录59. Spiral Matrix II

题目：Given a positive integer n, generate a square matrix filled with elements from 1 to n2 in spiral order.Example:Input: 3Output:[[ 1, 2, 3 ],[ 8, 9, 4 ],[ 7, 6, 5 ]]此题与

2019-10-07 21:44:34 126

原创 LeetCode 刷题记录54. Spiral Matrix

题目：Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order.Example 1:Input:[[ 1, 2, 3 ],[ 4, 5, 6 ],[ 7, 8, 9 ]]Output: [1,2,3,6,9,8,7,4,5]Exa...

2019-10-07 21:38:18 117

原创 LeetCode 刷题记录 53. Maximum Subarray

题目：53. Maximum SubarrayGiven an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.Example:Input: [-2,1,-3,4,-1,2,1,-5,4...

2019-10-07 18:01:18 127

原创 LeetCode 刷题记录 51. N-Queens

题目：The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other.Given an integer n, return all distinct solutions to the n-queens puzzle.Ea...

2019-10-06 20:50:01 154

原创 LeetCode 刷题记录52. N-Queens II

题目：The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other.Given an integer n, return the number of distinct solutions to the n-queens ...

2019-10-06 20:29:00 146

原创 LeetCode 刷题记录 50. Pow(x, n)

题目：Implement pow(x, n), which calculates x raised to the power n (xn).Example 1:Input: 2.00000, 10Output: 1024.00000Example 2:Input: 2.10000, 3Output: 9.26100Example 3:Input: 2.00000, -2Outp...

2019-10-05 20:19:37 241

原创 LeetCode 刷题记录 49. Group Anagrams

题目：Given an array of strings, group anagrams together.Example:Input: [“eat”, “tea”, “tan”, “ate”, “nat”, “bat”],Output:[[“ate”,“eat”,“tea”],[“nat”,“tan”],[“bat”]]Note:All inputs will be in ...

2019-10-04 23:26:32 138

原创 LeetCode 刷题记录 48. Rotate Image

题目：You are given an n x n 2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Note:You have to rotate the image in-place, which means you have to modify the input 2D matrix ...

2019-10-04 15:18:08 95

原创 LeetCode 刷题记录 47.PermutationsII

题目：Given a collection of numbers that might contain duplicates, return all possible unique permutations.Example:Input: [1,1,2]Output:[[1,1,2],[1,2,1],[2,1,1]]这次有重复需要去重，46题的解法1和解法2无需修改仍可使用解法...

2019-10-04 10:21:18 145

原创 LeetCode 刷题记录 46.Permutations

题目：Given a collection of distinct integers, return all possible permutations.Example:Input: [1,2,3]Output:[[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]求全排列，没有重复的元素解法1：调用函数...

2019-10-03 20:49:48 121

原创深入理解计算机系统第12章并发编程

12.1 基于进程的并发编程12.1.1 基于进程的并发服务器12.1.2 进程的优劣12.2 基于I/O多路复用的并发编程12.2.1 基于I/O 多路复用的并发事件驱动服务器12.2.2 I/O多路复用技术的优劣12.3 基于线程的并发编程12.3.1 线程执行模型12.3.2 Posix 线程...

2019-09-29 23:06:21 213

原创 LeetCode 刷题记录 55. Jump Game

题目：Given an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the array represents your maximum jump length at that position.Determine if ...

2019-09-26 19:15:52 117

计算机网络自顶向下方法答案(英文第六版)

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