CodeChavo Interview Questions and Answers

Q1. Explain the component lifecycle in ReactJS.
Ans. 
ReactJS component lifecycle includes mounting, updating, and unmounting phases, managing component behavior and state.
• Mounting: The phase when a component is being created and inserted into the DOM. Example: constructor(), render(), componentDidMount().

• Updating: Occurs when a component's state or props change. Example: shouldComponentUpdate(), render(), componentDidUpdate().

• Unmounting: The phase when a component is bei...read more
Answered by AI
Add your answer

Question: Given an array of integers, find the maximum sum of any contiguous subarray.
Input: [ -2, 1, -3, 4, -1, 2, 1, -5, 4 ]

Questions were asked around DS, Algo ,React and Redux

Q1. Explain the difference between graph and tree.
Ans. 
A graph is a collection of nodes connected by edges, while a tree is a special type of graph with a hierarchical structure.
• Structure: A tree is a connected acyclic graph with a single root node, while a graph can have cycles and multiple connections.

• Hierarchy: Trees represent hierarchical relationships (e.g., file systems), whereas graphs can represent more complex relationships (e.g., social networks).

• Edges: In a tree...read more
Answered by AI
Add your answer
Q2. Implement auth using clean code architecture
Ans. 
Implementing authentication using clean code architecture ensures maintainability, scalability, and separation of concerns in the application.
• Layered Architecture: Divide the application into layers (Presentation, Domain, Data) to separate concerns and improve maintainability.

• Use Cases: Define use cases for authentication (e.g., login, registration) in the domain layer, encapsulating business logic.

• Interfaces: Create i...read more
Answered by AI
Add your answer