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Cadence Design Systems
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I am a highly motivated individual with a passion for learning and a strong work ethic.
I have a degree in computer science and have worked as a software engineer for 3 years.
I am proficient in multiple programming languages including Java, Python, and C++.
I am a quick learner and enjoy taking on new challenges.
In my free time, I enjoy hiking and playing guitar.
C++ is an extension of C with object-oriented programming features.
C++ supports classes and objects while C does not.
C++ has better support for function overloading and templates.
C++ has a standard library that includes many useful functions.
C++ allows for both procedural and object-oriented programming.
C++ is generally considered more complex than C.
It depends on the specific use case and implementation.
C and C++ have different strengths and weaknesses.
C is often used for low-level programming and system-level tasks.
C++ is often used for object-oriented programming and high-level tasks.
The performance difference between C and C++ can be negligible or significant depending on the implementation.
Optimizations and compiler settings can also affect performance.
Benchma...
I know various sorting algorithms including bubble sort, insertion sort, selection sort, merge sort, quick sort, heap sort.
Bubble sort - repeatedly swapping adjacent elements if they are in wrong order
Insertion sort - inserting each element in its proper place in a sorted subarray
Selection sort - selecting the smallest element and swapping it with the first element
Merge sort - dividing the array into two halves, sortin...
UNION in C is a data type that allows storing different data types in the same memory location.
UNION is declared using the 'union' keyword.
It can be used to save memory by sharing the same memory location for different data types.
Accessing the members of a union can be done using the dot operator or the arrow operator.
Example: union myUnion { int i; float f; };
Example: myUnion.u.i = 10; myUnion.u.f = 3.14;
Object oriented programming is a programming paradigm that uses objects to represent and manipulate data.
OOP focuses on creating reusable code through the use of classes and objects
It emphasizes encapsulation, inheritance, and polymorphism
Examples of OOP languages include Java, C++, and Python
Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as in the superclass.
Overloading is compile-time polymorphism while overriding is runtime polymorphism.
Overloading is used to provide different ways of calling the same method while overriding is used to provide a specific implementation of a method in a subcl...
Allocate a 2-D array using C/C++
Use the 'new' keyword to allocate memory dynamically
Specify the number of rows and columns in the array
Access elements using array indexing
Programs can crash due to various reasons such as memory errors, bugs, hardware issues, etc.
Memory errors such as accessing uninitialized memory, buffer overflows, etc.
Bugs in the code such as infinite loops, null pointer dereferences, etc.
Hardware issues such as power failures, overheating, etc.
External factors such as network failures, input/output errors, etc.
Tools like Valgrind can help detect memory errors and oth
A dictionary can be represented in memory as an array of strings. Worst case complexity of search is O(n).
A dictionary can be represented as an array of strings where each string contains a key-value pair separated by a delimiter.
For example, ['apple: a fruit', 'banana: a fruit', 'carrot: a vegetable']
The worst case complexity of a search in this DS is O(n) as we may need to traverse the entire array to find the desire
Our company's software is a project management tool for businesses.
Helps businesses manage projects and tasks efficiently
Allows team collaboration and communication
Tracks progress and deadlines
Generates reports and analytics
Integrates with other tools like Slack and Trello
A variable can be allocated in different segments of memory.
Global memory segment
Stack memory segment
Heap memory segment
Code memory segment
Implement an API to return the second minimum element in a stack.
Create a stack and a variable to store the second minimum element.
Whenever a new element is pushed, compare it with the current second minimum and update if necessary.
Whenever an element is popped, check if it is the current second minimum and update if necessary.
Return the second minimum element when the secondMin() API is called.
Count the number of set bits in a given number's binary representation.
Convert the number to binary representation
Iterate through each bit and count the number of set bits
Use bitwise AND operator to check if a bit is set or not
Keep incrementing the count for each set bit
Cell padding is the space between the content of a cell and its border in a table.
Cell padding can be set using CSS or HTML attributes.
It affects the appearance of the table and can improve readability.
Padding can be set for individual cells or for the entire table.
Example:
Example: td { padding: 10px; }
The height and diameter of a tree are important measurements for forestry and landscaping purposes.
Height can be measured using a clinometer or by using trigonometry and a measuring tape.
Diameter can be measured at breast height (4.5 feet above ground) using a diameter tape or by measuring circumference and dividing by pi.
These measurements are important for determining the health and growth of a tree, as well as for p...
Static binding is done at compile-time while dynamic binding is done at runtime.
Static binding is also known as early binding while dynamic binding is also known as late binding.
Static binding is faster than dynamic binding as it is done at compile-time.
Dynamic binding is more flexible than static binding as it allows for polymorphism.
An example of static binding is function overloading while an example of dynamic bind
Virtual functions in C++ use vtables to enable dynamic binding. Example code included.
Virtual functions allow polymorphism in C++
Vtables are used to maintain a list of virtual functions
Each class with virtual functions has its own vtable
Vtable entries are function pointers to the virtual functions
Example code: class Shape { virtual void draw() = 0; };
Example code: class Circle : public Shape { void draw() override { ..
Auto and volatile are storage classes in C language. Scopes of variables determine where they can be accessed.
Auto variables are declared within a block and have a local scope.
Volatile variables are used to indicate that the value of the variable may change at any time.
Global variables have a file scope and can be accessed from any function within the file.
Static variables have a local scope but retain their value betw...
References in C++ allow a variable to refer to another variable's memory address.
References are declared using the '&' symbol.
They are often used as function parameters to avoid copying large objects.
References cannot be null and cannot be reassigned to refer to a different object.
They are commonly used in operator overloading to modify the original object.
Example: int x = 5; int& y = x; y++; // x is now 6.
Example: voi...
Static function in C++ class is used to access class-level data without creating an object.
Static functions can be called using the class name and scope resolution operator (::)
They cannot access non-static data members of the class
They can be used to implement utility functions that do not require access to object-specific data
Static functions are shared among all objects of the class
Find subarray with highest sum in an array of numbers.
Use Kadane's algorithm to find maximum subarray sum
Initialize max_so_far and max_ending_here to 0
Iterate through the array and update max_ending_here and max_so_far
Return the subarray with highest sum
Example: [-2, 1, -3, 4, -1, 2, 1, -5, 4] => [4, -1, 2, 1]
I was interviewed in Jan 2025.
I was interviewed in Apr 2024.
I am a passionate and experienced design engineer with a strong background in mechanical engineering.
Graduated with a degree in Mechanical Engineering from XYZ University
Worked for 5 years at ABC Company designing innovative products
Proficient in CAD software such as SolidWorks and AutoCAD
Strong problem-solving skills and attention to detail
Collaborated with cross-functional teams to bring projects to completion
Matching is the process of comparing two or more items to determine if they are the same or similar.
Matching involves comparing characteristics or features of items to find similarities or differences.
Types of matching include pattern matching, string matching, and image matching.
Matching is used in various fields such as computer science, psychology, and genetics.
Example: Matching fingerprints to identify a suspect in...
To determine the metal width for routing, calculate the resistance and use it to find the required width.
Calculate resistance using R = ρ * (L/A), where ρ is the resistivity of the metal, L is the distance between blocks, and A is the cross-sectional area of the metal.
Use Ohm's Law (V = I * R) to find the voltage drop across the metal.
Finally, use the voltage drop and current to determine the required metal width.
Block functionality of previous project involved data processing and storage. Layout started with floorplanning and power grid design.
Implemented data processing block using Verilog HDL
Designed storage block using flip-flops and registers
Started layout with floorplanning to allocate space for different blocks
Designed power grid to ensure proper distribution of power to all blocks
Performed physical design tasks such as ...
Em&IR stands for Emissions and Immunity in the context of design engineering. Resolving these issues involves identifying sources of electromagnetic interference and implementing mitigation techniques.
Em&IR refers to the study of electromagnetic emissions from electronic devices and their susceptibility to external interference.
Common sources of electromagnetic interference include power supplies, motors, and wireless ...
Command to find lines with 'ERROR' in log file and copy to new file
Use grep command to search for 'ERROR' in log file: grep 'ERROR' logfile.txt
Use redirection to copy the output to a new file: grep 'ERROR' logfile.txt > newfile.txt
Latchup is a condition in integrated circuits where parasitic thyristors are inadvertently triggered, causing a high current flow.
Latchup can be resolved by adding guard rings around sensitive components to prevent parasitic thyristors from triggering.
Using layout techniques such as spacing sensitive components further apart can also help prevent latchup.
Properly designing the power distribution network and ensuring pr
Antenna effect is the phenomenon where the gate of a transistor behaves like an antenna, causing unwanted signal interference.
Antenna effect occurs in integrated circuits due to the gate acting as an antenna and picking up external signals.
It can lead to performance degradation and reliability issues in the circuit.
To resolve antenna effect, techniques like adding shielding layers, changing layout design, and using gua...
Higher metal jumps are preferred over lower metal jumps for resolving antenna issues due to better signal propagation and reduced interference.
Higher metal jumps provide better signal propagation and reduced interference compared to lower metal jumps.
Higher metal jumps help in achieving better antenna performance and coverage.
Lower metal jumps may result in signal degradation and increased interference.
Higher metal jum...
WPE stands for Water Pressure Equalization. It is a system used to maintain equal pressure in a water distribution network.
WPE helps prevent water hammer, which can damage pipes and fittings.
It ensures consistent water pressure throughout the network, even when demand fluctuates.
Regular maintenance of valves, pumps, and pressure regulators is essential to ensure the WPE system functions properly.
Yes, I am comfortable with the job location.
I have researched the area and feel it is a good fit for me.
I have visited the location and liked what I saw.
I am willing to relocate if necessary for this opportunity.
A FIFO checker is a verification component used to monitor and validate the behavior of a First-In-First-Out buffer in a design.
Implement a monitor that tracks the input and output operations of the FIFO buffer
Check that the data is read out in the same order it was written in
Verify that the FIFO buffer does not overflow or underflow
Use assertions to flag any violations of FIFO behavior
Example: Monitor the write and re...
Cadence Design Systems interview questions for popular designations
I applied via Campus Placement and was interviewed in Jun 2024. There were 2 interview rounds.
Capacitors in series add reciprocally, in parallel add directly. Voltage in series is the sum, in parallel is the same.
Capacitors in series: 1/Ctotal = 1/C1 + 1/C2
Capacitors in parallel: Ctotal = C1 + C2
Voltage in series: Vtotal = V1 + V2
Voltage in parallel: Vtotal = V1 = V2
The output of the circuitry needs to be analyzed for functionality and accuracy.
Examine the input and output signals to ensure they are within expected ranges
Check for any noise or interference in the output
Verify that the circuit is functioning as designed based on the specifications
Look for any potential issues or errors in the output
The output waveforms can be drawn based on the input signal and circuit configuration.
Understand the input signal characteristics (frequency, amplitude, etc.)
Analyze the circuit components and their effects on the signal
Draw the output waveform based on the input and circuit analysis
Get interview-ready with Top Cadence Design Systems Interview Questions
To add two linked lists, iterate through both lists simultaneously and add corresponding nodes, considering carry from previous addition.
Create a dummy node to hold the result.
Initialize current node to dummy node.
Iterate through both lists, adding values and carry from previous addition.
Move to next nodes in both lists.
Handle cases where one list is longer than the other.
Handle final carry if present.
Use Dijkstra's algorithm to find the shortest path in a graph
Implement Dijkstra's algorithm to find the shortest path between two nodes in a graph
Maintain a priority queue to keep track of the shortest distance to each node
Update the shortest distance to each node as you traverse the graph
Track the path by storing the previous node for each node visited
Check if a binary tree is a Binary Search Tree (BST)
Perform an in-order traversal of the tree and check if the resulting array is sorted
Keep track of the previous node value during traversal to compare with the current node value
Ensure that each node's value is greater than the previous node's value in the in-order traversal
Check if a substring in an array of strings is a palindrome or not.
Iterate through each string in the array
For each string, check if any of its substrings are palindromes
Return true if a palindrome substring is found, false otherwise
I applied via Campus Placement
It was an online assesment followed by an offline assessment.
A linked list is a data structure where each element points to the next element in the sequence.
Create a Node class with data and next pointer
Initialize a head pointer to null
Add elements by creating new nodes and updating next pointers
Traverse the list by following next pointers
To insert a node in a Linked List, update the next pointer of the new node to point to the current node's next, then update the current node's next pointer to the new node.
Create a new node with the desired value
Set the new node's next pointer to the current node's next
Update the current node's next pointer to the new node
I applied via Campus Placement and was interviewed in Mar 2024. There were 3 interview rounds.
Logical Reasoning, Verbal Reasoning , Quantitative Ability, Digital Electronics
DSP, C, Verilog, Digital Design
Add two numbers represented as arrays
Iterate through the arrays from right to left, adding digits and carrying over if necessary
Handle cases where one array is longer than the other
Return the result as a new array
Access modifiers in Java control the visibility of classes, methods, and variables.
There are four types of access modifiers in Java: public, protected, default (no modifier), and private.
Public: accessible from any other class.
Protected: accessible within the same package or subclasses.
Default: accessible only within the same package.
Private: accessible only within the same class.
Example: public class MyClass {}
It is not common practice to provide complete code of all projects in an interview setting.
It is not recommended to share complete code of all projects due to confidentiality and intellectual property concerns.
Instead, focus on discussing the technologies used, challenges faced, and solutions implemented in your projects.
Provide code snippets or high-level overviews of your projects to showcase your skills and experien
CMOS inverter is a type of logic gate that converts input signals into their complementary outputs.
CMOS inverter consists of a PMOS transistor and an NMOS transistor connected in series.
When input is high, PMOS conducts and NMOS is off, resulting in output low.
When input is low, NMOS conducts and PMOS is off, resulting in output high.
CMOS technology is widely used in digital integrated circuits due to its low power con
Verilog code for sequence detector
Use state machines to detect the desired sequence
Define states for each part of the sequence
Use combinational logic to transition between states
Implement the Verilog code using if-else statements and always blocks
I applied via Campus Placement and was interviewed in Dec 2024. There were 2 interview rounds.
Asked about Network theory
Virtual functions allow a function to be overridden in a derived class, enabling polymorphic behavior.
Virtual functions are declared in a base class with the 'virtual' keyword.
They are meant to be overridden in derived classes to provide specific implementations.
When a virtual function is called through a base class pointer or reference, the actual function to be executed is determined at runtime based on the object's ...
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