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I applied via Recruitment Consulltant and was interviewed in Dec 2023. There was 1 interview round.
I applied via Referral and was interviewed in Jan 2021. There was 1 interview round.
I passed HSLC in 2015.
I passed HSLC in 2015.
I completed my HSLC in 2015.
I cleared the HSLC examination in 2015.
I applied via Job Fair and was interviewed in Oct 2021. There were 2 interview rounds.
Quality materials and products are ensured through rigorous testing and inspection processes.
Establishing quality standards and specifications for materials and products
Conducting regular inspections and audits of suppliers and manufacturing processes
Performing thorough testing and analysis of materials and products
Implementing corrective actions and continuous improvement initiatives
Collaborating with cross-functional...
I applied via Company Website and was interviewed in Oct 2023. There were 2 interview rounds.
Electronics deals with the flow of electrons, while electrical focuses on the generation, distribution, and use of electricity.
Electronics is concerned with the behavior and control of electrons in devices and systems.
Electrical engineering deals with the generation, transmission, and use of electrical power.
Electronics involves designing and building electronic circuits and devices, such as computers and smartphones.
E...
An AND gate is a logic gate that outputs a high signal only when all of its inputs are high.
AND gate is a basic logic gate used in digital circuits.
It has two or more inputs and one output.
The output of an AND gate is true only when all of its inputs are true.
It follows the truth table: 0 AND 0 = 0, 0 AND 1 = 0, 1 AND 0 = 0, 1 AND 1 = 1.
AND gates are commonly used in computer processors, memory units, and other digital
A NOR gate is a logic gate that produces an output of true only when all of its inputs are false.
NOR gate is a type of logic gate that performs the logical NOR operation.
It has two or more inputs and one output.
The output of a NOR gate is true (or high) only when all of its inputs are false (or low).
It is the complement of the OR gate.
The truth table for a NOR gate is: 0 NOR 0 = 1, 0 NOR 1 = 0, 1 NOR 0 = 0, 1 NOR 1 = 0...
A basic gate is a fundamental building block of digital circuits that performs a specific logical operation.
Basic gates include AND, OR, NOT, NAND, NOR, and XOR gates.
AND gate outputs true only when all inputs are true.
OR gate outputs true when at least one input is true.
NOT gate inverts the input signal.
NAND gate outputs the negation of the AND gate.
NOR gate outputs the negation of the OR gate.
XOR gate outputs true wh
I applied via Company Website and was interviewed in Sep 2023. There were 2 interview rounds.
QC stands for Quality Control. It is a department responsible for ensuring products meet quality standards.
QC involves inspecting and testing products to ensure they meet quality standards
QC department is responsible for identifying defects and implementing corrective actions
Examples of QC activities include product testing, inspection, and quality audits
7QC tools are a set of quality control tools used for process improvement and problem-solving in quality management.
Check sheets: Used for collecting and organizing data, such as defect counts.
Histograms: Visual representation of data distribution to identify patterns.
Pareto charts: Helps prioritize issues by showing the most significant factors.
Cause-and-effect diagrams: Identifies root causes of problems.
Scatter diag...
I appeared for an interview before Apr 2021.
Round duration - 90 minutes
Round difficulty - Medium
This round had 3 coding questions of Medium to Hard level of difficulty.
Given an integer N
representing the number of pairs of parentheses, find all the possible combinations of balanced parentheses using the given number of pairs.
Generate all possible combinations of balanced parentheses for a given number of pairs.
Use recursion to generate all possible combinations of balanced parentheses.
Keep track of the number of open and close parentheses used in each combination.
Return the valid combinations as an array of strings.
You are given a long type array/list ARR
of size N
, representing an elevation map. The value ARR[i]
denotes the elevation of the ith
bar. Your task is to determine th...
Calculate the total amount of rainwater that can be trapped between given elevations in an array.
Iterate through the array and calculate the maximum height on the left and right of each bar.
Calculate the amount of water that can be trapped at each bar by taking the minimum of the maximum heights on the left and right.
Sum up the trapped water at each bar to get the total trapped water for the entire array.
You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:
Find the minimum time required to rot all fresh oranges adjacent to rotten oranges.
Create a queue to store the coordinates of rotten oranges and perform BFS to rot adjacent fresh oranges.
Track the time taken to rot all fresh oranges and return -1 if not all fresh oranges can be rotten.
Update the grid with the new state of oranges after each second.
Handle edge cases such as empty grid or no fresh oranges present.
Example...
Round duration - 60 Minutes
Round difficulty - Medium
This was a standard DS/Algo round where I was given 2 questions to solve under 60 minutes. I was able to come up with the optimal approach for both the questions and then at the end of the interview I was also asked the famous Die Hard Water Puzzle.
Design a queue data structure following the FIFO (First In First Out) principle using only stack instances.
Your task is to complete predefined functions t...
Implement a queue using stacks following FIFO principle.
Use two stacks to simulate a queue.
For enQueue operation, push elements onto stack1.
For deQueue operation, if stack2 is empty, pop all elements from stack1 and push onto stack2, then pop from stack2.
For peek operation, if stack2 is empty, pop all elements from stack1 and push onto stack2, then return top of stack2.
For isEmpty operation, check if both stack1 and st...
You are provided with 'N' intervals, each containing two integers denoting the start time and end time of the interval.
Your task is to merge all overlapping intervals a...
Merge overlapping intervals and return sorted list of merged intervals by start time.
Sort the intervals based on start time.
Iterate through intervals and merge overlapping ones.
Return the merged intervals in sorted order.
Round duration - 60 Minutes
Round difficulty - Medium
This round had 2 coding questions - first one related to Binary Tree and the second one was a simple question from Bit Manipulation. This was followed by some questions from OOPS.
You are given a Binary Tree, and you need to determine the length of the diameter of the tree.
The diameter of a binary tree is the length of the longest path betwe...
The task is to find the diameter of a binary tree, which is the length of the longest path between any two end nodes in the tree.
Traverse the tree to find the longest path between two nodes.
Keep track of the maximum diameter found during traversal.
The diameter may not necessarily pass through the root node.
Consider both left and right subtrees while calculating the diameter.
Example: For input 1 2 3 4 -1 5 6 -1 7 -1 -1
Determine if it is possible to reorder the digits of a given integer 'N' such that the resulting number is a power of two. The leading digit must not be zero.
The fir...
The problem involves determining if it is possible to reorder the digits of a given integer to form a power of 2.
Iterate through all possible permutations of the digits of the given integer.
Check if any of the permutations form a power of 2.
Return 1 if a valid permutation is found, else return 0.
Advantages of OOP include code reusability, modularity, and easier maintenance.
Code reusability: Objects can be reused in different parts of the program, reducing redundancy.
Modularity: OOP allows for breaking down complex problems into smaller, more manageable parts.
Easier maintenance: Changes to one part of the codebase do not necessarily affect other parts, making maintenance easier.
Encapsulation: Data hiding and ab...
Access specifiers define the level of access to class members in Object-Oriented Programming.
Access specifiers include public, private, protected, and default
Public members are accessible from outside the class
Private members are only accessible within the class
Protected members are accessible within the class and its subclasses
Default access is when no access specifier is specified
Round duration - 30 Minutes
Round difficulty - Easy
This was my last round and I hoped it to go good just like the other rounds. The interviewer was very straight to point
and professional. The interview lasted for 30 minutes.
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Queue can be implemented using two stacks by maintaining the order of elements in the stacks.
Create two stacks, let's call them stack1 and stack2
When an element is enqueued, push it to stack1
When an element is dequeued, pop all elements from stack1 and push them to stack2
Pop the top element from stack2 and return it as the dequeued element
If stack2 is empty, repeat step 3
To get the front element of the queue, peek the
Left join returns all records from left table and matching records from right table. Full outer join returns all records from both tables.
Left join is used to combine two tables based on a common column.
In left join, all records from the left table are returned along with matching records from the right table.
If there is no match in the right table, NULL values are returned.
Example: SELECT * FROM table1 LEFT JOIN table...
Magic functions are special methods in PHP that start with __. Autoloading is a way to automatically load classes.
Magic functions are used to handle certain events in PHP, such as object creation or property access.
Autoloading allows PHP to automatically load classes when they are needed, without requiring manual includes.
Magic functions can be used in conjunction with autoloading to dynamically load classes or handle
Given three sorted arrays, find common elements.
Create three pointers to traverse each array
Compare the elements at the pointers and move the pointer of the smallest element
If all pointers point to the same element, add it to the result and move all pointers
Repeat until any pointer reaches the end of its array
Check if a number is a power of 2 or not.
A power of 2 has only one bit set in its binary representation.
Use bitwise AND operator to check if the number is a power of 2.
If n is a power of 2, then n & (n-1) will be 0.
I applied via Recruitment Consultant and was interviewed before May 2020. There were 3 interview rounds.
Clone a linked list with random pointers.
Create a new node for each node in the original list.
Store the mapping between the original and cloned nodes in a hash table.
Traverse the original list again and set the random pointers in the cloned list using the hash table.
Return the head of the cloned list.
I applied via Referral and was interviewed in Feb 2020. There were 6 interview rounds.
System implementation process involves planning, designing, testing, and deploying new software or hardware systems.
Planning phase involves defining project scope, setting goals, and creating a timeline.
Design phase includes creating system architecture, database design, and user interface.
Testing phase involves conducting various tests to ensure system functionality and performance.
Deployment phase includes installing...
Monitoring performance involves setting clear expectations, providing feedback, tracking progress, and addressing any issues that arise.
Set clear performance expectations for team members
Provide regular feedback on performance
Track progress towards goals and objectives
Address any performance issues promptly and constructively
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Primus Global Technologies
GAMMON INDIA
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