LogicMonitor UI Developer Interview Questions and Answers

Normal java coding question

Q1. What are spring ioc
Ans. 
Spring IoC (Inversion of Control) is a design pattern where the control of object creation and lifecycle is shifted to a container or framework.
• In Spring IoC, objects are created and managed by the Spring container.

• It helps in achieving loose coupling between classes.

• Dependency Injection is a key feature of Spring IoC, where dependencies of a class are injected by the container.

• Example: @Autowired annotation in Spring
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Q2. Different implementation of map interface
Ans. 
The Map interface in Java provides a way to store key-value pairs and retrieve values based on keys.
• Different implementations of the Map interface include HashMap, TreeMap, LinkedHashMap, and ConcurrentHashMap.

• HashMap provides constant-time performance for basic operations but does not guarantee the order of elements.

• TreeMap maintains elements in sorted order based on keys.

• LinkedHashMap maintains the insertion order of...read more
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Easy - Medium Leetcode

Q1. Share your experience
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Q2. How do you handle pressure
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Round duration - 60 minutes
Round difficulty - Medium

The round was technical round and it was held on google meet around 1 pm

Q1. Puzzle
Given two hourglass of 4 minutes and 7 minutes, the task is to measure 9 minutes.
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Q2. Technical Questions
What is multithreading ?
What is diamond problem ?
He asked some technical questions related to my projects
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Q3. Maximum Sum Rectangle
You are given an M X N matrix of integers ARR. Your task is to find the maximum sum rectangle.
Maximum sum rectangle is a rectangle with the maximum value for the sum of integers pr...read more
Ans. Brute force
In this approach, we'll try to consider each rectangle that can be formed using elements of the array. To do this we fix (X1,Y1) coordinates of starting vertex and iterate through the matrix for every pair (X2,Y2) as the coordinates of ending vertex. Now we have a rectangle with coordinates (X1,Y1), (X1,Y2), (X2,Y1) and (X2,Y2).
We'll find the sum of elements within this rectangle and compare it with MAXSUM. ...read more
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Round duration - 60 minutes
Round difficulty - Medium

It was managerial round and took place around 3 pm

Q1. OS Questions
Producer Consumer Problem using Semaphores
What is Banker's algorithm?
What is Belady's Anomaly ?
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Q2. Infix to Postfix
You are given a string EXP which is a valid infix expression. Convert the given infix expression to postfix expression.
Infix expression is of the form a op b. Where operator is is betwe...read more
Ans. Stack
We will scan the expression from left to write and if we encounter an operand we will append it to our answer. If we encounter an operator we will pop all the operators with equal or higher precedence and append them to our answer. And push the current operator. In the end, we will empty the stack.
Order of precedence = [ ‘^’, ‘*’ and ‘/’, ‘+’ and ‘-’, ‘(’, ‘)’]
Order of precedence [ link ]
The algorithm will be-
1. ANS ...read more
Answered by CodingNinjas
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Q1. Just basic question about react
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Q1. Other person will ask indepth and coding questions
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