bruce# LeetCode Daily Challenge Discussion | 399. Evaluate Division
399. Evaluate Division DescriptionYou are given an array of variable pairs equations and an array of real numbers values, where equations = andvalues represent the equation Ai / Bi =…
# LeetCode Daily Challenge | 785. Is Graph Bipartite
785. Is Graph Bipartite DescriptionThere is an undirected graph with n nodes, where each node is numbered between 0 and n - 1. You are given a 2D array graph,…
# LeetCode Daily Challenge Discussion | 1557. Minimum Number of Vertices to Reach All Nodes
1557. Minimum Number of Vertices to Reach All Nodes DescriptionGiven a directed acyclic graph, with n vertices numbered from 0 to n-1, and an array edges where edges = represents a directed edge from node fromi to node toi.Find the smallest set of vertices…
2130. Maximum Twin Sum of a Linked List # LeetCode Daily Challenge
2130. Maximum Twin Sum of a Linked List DescriptionIn a linked list of size n, where n is even, the ith node (0-indexed) of the linked list is known as…
Deploy golang webserver with docker got “Error: socket hang up”
Docker localhost Today, I was trying to transit my golang webserver project into docker. When testing in my local machine, I couldn't connect to the the docker container by any…
Databases replication in Distributed system
Data Replication Data ReplicationReplicationReplication refers to keeping multiple copies of the data at various nodes (preferably geographically distributed) to achieve availability, scalability, and performance. Replication is generally straightforward when the…
24. Swap Nodes in Pairs # LeetCode Daily Challenge
24. Swap Nodes in Pairs DescriptionGiven a linked list, swap every two adjacent nodes and return its head. You must solve the problem without modifying the values in the list's nodes (i.e.,…
1721. Swapping Nodes in a Linked List # LeetCode Daily Challenge
1721. Swapping Nodes in a Linked List DescriptionYou are given the head of a linked list, and an integer k.Return the head of the linked list after swapping the values…
1799. Maximize Score After N Operations # LeetCode Daily Challenge
1799. Maximize Score After N Operations DescriptionYou are given nums, an array of positive integers of size 2 * n. You must perform n operations on this array.In the ith…
2466. Count Ways To Build Good Strings # LeetCode Daily Challenge
2466. Count Ways To Build Good Strings DescriptionGiven the integers zero, one, low, and high, we can construct a string by starting with an empty string, and then at each…