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A mash of syntaxes to remember and reference…. Testing Junit is typically used with other libraries like Mockito import static org.junit.jupiter.api.Assertions.*; import org.junit.jupiter.api.Test; import org.mockito.junit.jupiter.MockitoExtension; @ExtendWith(MockitoExtension.class) class ATest{ private DietPlanner dietPlanner; @Mock GitFileDownloader gitFileDownloader; @Captor private ArgumentCaptor<List<GitFileInfo>> gitFileArgumentCaptor; @BeforeEach void setup(){ this.dietPlanner =…

React Hooks allow you to create stateful logic in functional React components. Managing states The useState hook returns the current value of the state and a function to update the state. Managing side effects The useEffect hooks allow you to achieve this by creating an inline callback function. Rules for Hooks Only call hooks at the top level…

I don’t really know how to term this category of questions so i will just call them ‘systems questions’. 208. Implement Trie (Prefix Tree) A trie (pronounced as “try”) or prefix tree is a tree data structure used to efficiently store and retrieve keys in a dataset of strings. …

90% of the article here was copied from the leetcode discussion (Except for the last section Tips from a Smart Friend (!!!Recommend to read this first!!!) and the C++ Code I added when trying to solve the problem again). …

I was asked about Java multithreading during a recent interview. It was for a non quant dev role, just a regular junior software engineer role for a tech company. I was not able to answer it well (eg, what is the keyword volatile? What is a synchronised block?) and got…

More leetcoding…btw i found that storing my practices on Medium is pretty helpful during interviews. Lets say the interviewer asks a question that i have attempted before, I can quickly do a Ctrl-f and peek at the solution while I reattempt them during the interview 👊 Found an online cheatsheet …

I hope that this won’t happen to anyone who reads this article. However, i just thought that publishing a todo list about this might be helpful for someone out there. Download all your payslips to your personal storage, eg google drive. …

Interview Qns What’s the diff between functional and class components? Are they interchangeable? They achieve the same results. Functional components can be used to define stateless components that don’t have any state. With the introduction of Hooks in React, functional components can now also handle state and lifecycle methods, so the distinction between functional and class components is becoming less important.