Zoho Interview Questions 2025 [Technical & HR]

Zoho Interview Process for Experienced Candidates

Zoho Placement Paper Pattern 2025

Here are the zoho company interview questions with answers:

1. What is a Data Structure?

A data structure is the organization, storage, and manipulation of data effectively on a computer. It defines data element interactions along with techniques for operating on the data with the purpose of increasing efficiency, reusability, and abstraction.

2. Difference between Static and Dynamic Memory Allocations

Here are the differences for static and dynamic memory allocation:

3. How ArrayList different from LinkedList?

Here are the key differences for ArrayList and LinkedList such as:

ArrayList

• Uses dynamic arrays to hold data.
• Holds only similar types of data.
• Memory is contiguous.
• Accesses elements faster (because of index-based access directly).

LinkedList

• Uses a doubly linked list for holding data.
• Holds any kind of data.
• Memory is non-contiguous.
• Accesses elements slower but accesses insertions and deletions faster.

4. What is the Bubble Sort Algorithm?

Bubble Sort is a simple sorting algorithm that repeatedly compares next elements in a list and exchanges them if they are in the wrong order. It keeps on doing this until the list gets sorted.

Steps

• Compare first two elements.
• Exchange them if they are out of order.
• Proceed to next pair and do it again till the end.
• The largest element "bubbles" to the proper position on each pass.

5. What are the OOPs Concepts?

Object-Oriented Programming (OOP) is an object-based programming paradigm, i.e., it is based on the idea of objects, which may hold data and code. It offers four basic principles:

• Encapsulation: Grouping data and methods that act on the data into one unit (class).
• Abstraction: Hiding implementation details and revealing only the necessary features.
• Inheritance: A mechanism by which a new class inherits properties and behaviors from a current class.
• Polymorphism: The capability of an object to assume many forms, usually through method override or method overload.

6. How to reverse a string in C?

#include <stdio.h>
#include <string.h>

int main() {
    char str[100]; 
    printf("Enter the String: ");
    scanf("%s", str);
    printf("Reversed String: %s", strrev(str));
    return 0;
}

Explanation

• It takes a string input from the user and stores it in the array str.
• It reverses the string in-place.
• Using strrev(str) prints the reversed string.

Output

Enter the String: hello
Reversed String: olleh

7. In what way is Stack different from Queue?

Here are the key differences for stack and queue:

Stack

• Finds application according to LIFO (Last In, First Out) rule.
• Operations such as Push (insert) and Pop (delete) are performed at the top.
• Applied while recursive function call is being performed, and to implement undo commands.

Queue

• Finds application according to FIFO (First In, First Out) rule.
• Operations such as Enqueue (insert) and Dequeue (delete) are performed at both ends (front and rear).
• Applied in examples such as CPU scheduling and processing a request in an application.

8. Define pass by value and pass by reference.

Here is the way to define pass by value and pass by reference:

Pass by Value

• Function gets a copy of the actual parameter.
• Modification inside the function will not reflect to the original variable.
• Used in programming languages such as Java for the primitive types.

Pass by Reference

• Function gets a reference of the actual parameter.
• Modification inside the function is directly reflected on the original variable.
• Used in programming languages such as C++.

9. What is Inheritance in OOP?

• Inheritance enables a class (child class) to inherit the characteristics and behaviours (fields and methods) of another class (parent class).
• It supports reusability and logical hierarchical structure.

Java Example

class Animal {
    void sound() {
        System.out.println("Animal makes a sound");
    }
}

class Dog extends Animal {
    void sound() {
        System.out.println("Dog barks");
    }
}

public class Main {
    public static void main(String[] args) {
        Animal animal = new Animal();
        Dog dog = new Dog();
        
        animal.sound();  // Output: Animal makes a sound
        dog.sound();     // Output: Dog barks
    }
}

Explanation

• The sound() method in Animal prints "Animal makes a sound".
• Dog extends Animal and overrides the sound() method to print "Dog barks".
• In Dog, the sound() method provides a specific implementation for dogs.

Output

Animal makes a sound
Dog barks

10. What is the purpose of final keyword in Java?

• final variable: The value cannot be modified after it has been assigned.
• final method: The method cannot be overridden in subclasses.
• final class: The class cannot be subclassed.

Example

final int MAX = 100;  // Cannot be modified

11. What are pointers in C?

• A pointer is a variable that holds the memory address of another variable.
• Pointers give direct access and manipulation of memory.
• They are utilized for handling dynamic memory, arrays, and function calls.

Example

int x = 5;
int *ptr = &x; // ptr stores address of x

12. What is the difference between == and equals() in Java.

• ==: Compares object references, i.e., checks whether both variables point to the same memory location.
• equals(): Compares the contents of the objects (for String and other objects where equals() is overridden).

Example

String str1 = new String("hello");
String str2 = new String("hello");

System.out.println(str1 == str2); // false (different references)
System.out.println(str1.equals(str2)); // true (same content)

13. What is the difference between String, StringBuffer, and StringBuilder in Java?

Here are the differences for String, StringBuffer, and StringBuilder in Java:

• String: Immutable (cannot be changed). Any modification creates a new object.
• StringBuffer: Mutable (can be changed). Thread-safe (synchronised).
• StringBuilder: Mutable (can be modified). Not thread-safe (more performance than StringBuffer).

14. When would a Linked List be superior to an Array?

• Dynamic size: Linked Lists are dynamic and can be expanded or shrunk as per requirement, while arrays comprise a fixed number of elements.
• Insertion/deletion efficiency: Insertion and deletion of elements are more efficient in Linked Lists (O(1) time) than in arrays (O(n) worst case).
• Memory Utilization: Linked Lists are space efficient since they occupy space only when required.

15. Why is the super keyword used in Java?

• The super is used to refer to the parent class object.
• It invokes parent class methods, constructors, and parent class variables.

Example

class Animal {
    void sound() {
        System.out.println("Animal makes a sound");
    }
}

class Dog extends Animal {
    void sound() {
        super.sound();  // Calls the parent class method
        System.out.println("Dog barks");
    }
}

16. What is Java deadlock?

• Deadlock is a situation in which two or more threads are in a deadlock position, waiting for the other threads to free resources.
• It arises when each thread has acquired one resource and waits for the other threads to free another.

Example scenario:

• Thread 1 acquires resource A and waits for resource B.
• Thread 2 acquires resource B and waits for resource A.

17. How is throw different from throws in Java?

• throw: To throw a particular exception in the program.
• throws: To declare the exceptions that the method can throw.

Example

void method() throws IOException { // declares exception
    throw new IOException("IOException occurred"); // throws exception
}

18. What is the purpose of this keyword in Java?

• The keyword ‘this’ refers to the instance of the current class.
• It is utilized to distinguish between local and instance variables and invoke current class methods.

Example

class MyClass {
    int num;
    MyClass(int num) {
        this.num = num; // 'this' is the current object
    }
}

19. Why is finally block significant in Java?

• Finally block is used for running code following a try-catch block irrespective of whether there was an exception or not.
• It is mostly used for free up of resources (e.g., closing files, database connections).

20. What is the difference between a Class and an Interface in Java?

• Class: An object creation blue print; can have methods and instance variables.
• Interface: A contract for implementing classes; it is only possible to have abstract methods (apart from default and static methods in subsequent versions of Java).

21. Why is the static keyword used in Java?

• The static keyword is used to declare that a variable or method is shared by the class, rather than by the instance of the class.
• Static members can be accessed without an instance of the class.

22. What is a constructor in Java?

• A constructor is a special method to create objects.
• It is invoked when an object of a class is instantiated and is named the same as the class.
• Constructors may be default (no parameters) or parameterized.

23. What is multithreading?

• Multithreading is the capability of a CPU to execute multiple threads concurrently.
• It enhances the performance of programs by running multiple tasks at once.

24.How does "malloc" differ from "calloc" in C?

• malloc (Memory Allocation) allocates memory of a specified size but does not initialize the memory. It makes the memory values unknown.
• calloc (Contiguous Allocation) allocates space for an array of elements and initializes all the elements to 0.

25. What is polymorphism in C++?

One of the four basic principles of OOP, polymorphism denotes that a same function or method can perform some different work depending on the object on which the function or method is being operated. There exist two forms of polymorphism in C++.

• Compile-time polymorphism (Method Overloading and Operator Overloading): This is the process where there exist several functions or operators with the same name but with different purposes depending on the parameters passed.‍
• Run-time polymorphism (Inheritance and Virtual Functions): This is where one uses a pointer or reference to the base class to call a derived class function, which is determined at run time dynamically through function overriding.

Here are the Zoho advanced programming round questions and answers:

26. How would you find the intersection of two arrays in Java?

We can use a HashSet for efficient lookup and traverse the second array to find common elements.

Code

import java.util.*;

public class Main {
    public static void main(String[] args) {
        int[] arr1 = {1, 2, 3, 4, 5};
        int[] arr2 = {4, 5, 6, 7};

        Set<Integer> set = new HashSet<>();
        for (int i : arr1) {
            set.add(i);
        }

        for (int i : arr2) {
            if (set.contains(i)) {
                System.out.println(i);
            }
        }
    }
}

Explanation

• The elements of arr1 are inserted into a HashSet set that can only hold unique elements and also give a fast lookup. 
• The code then goes through arr2 and checks whether each element exists in the set, which contains elements from arr1. 
• If found in set, the element of arr2 gets printed. Both arr1 and arr2 have common elements, namely, 4 and 5, printed since they exist in both arrays.

Output

4
5

27. How to find Duplicates in Array?

Code

#include <stdio.h>

int main() {
    int arr[] = {10, 20, 25, 30, 35, 30, 20, 10};
    int size = sizeof(arr) / sizeof(arr[0]);

    printf("Duplicate Elements: ");
    for (int i = 0; i < size; i++) {
        for (int j = i + 1; j < size; j++) {
            if (arr[i] == arr[j]) {
                printf("%d ", arr[j]);
            }
        }
    }
    return 0;
}

Explanation

• The outer loop iterates through the array, and the inner loop checks every other element adjacent to the present one for duplicates.
• This checks if any two elements of the array are equal.
• If the duplicate is detected, it is printed.

Output

Duplicate Elements: 20 30 10 

28. Find the Longest Palindrome Sub-string in a String

Code

string getLongestPalindrome(string s) {
    int n = s.size();
    int index  = 0, palindromeLength = 1;

    for (int i = 1; i < n; i++) {
        int left = i - 1, right = i;
        while (left >= 0 && right < n && s[left] == s[right]) {
            if (right - left + 1 > palindromeLength) {
                index = left;
                palindromeLength = right - left + 1;
            }
            left--;
            right++;
        }
        left = i - 1;
        right = i + 1;
        while (left >= 0 && right < n && s[left] == s[right]) {
            if (right - left + 1 > palindromeLength) {
                index = left;
                palindromeLength = right - left + 1;
            }
            left--;
            right++;
        }
    }
    return s.substr(index, palindromeLength);
}

Explanation

• This method finds the longest palindrome substring by expanding from the center of the string.
• The first one checks for odd-length palindromes (center at i), and the second one checks for even-length palindromes (center between i and i+1).
• Returns the longest palindrome substring of the string.

Output

// input string "babad"
aba

29. How to Print a Pattern from a String?

Code

#include<stdio.h>

int main(void) {
    char str[50];
    int i, j, n;

    printf("Enter the string : ");
    scanf("%s", str);
    
    for (n = 0; str[n]; n++); // Calculate the length of the string
    n = n / 2 + 1;

    for (i = 1; i <= n; i++) { // Top half of the pattern
        for (j = 1; j < i; j++) printf(" ");
        for (j = 0; j < 2 * (n - i) + 1; j++) {
            if (j == 0 || j == 2 * (n - i)) printf("%c", str[i - 1 + j]);
            else printf(" ");
        }
        printf("\n");
    }

    for (i = 2; i <= n; i++) { // Bottom half of the pattern
        for (j = 1; j <= n - i; j++) printf(" ");
        for (j = 1; j <= 2 * i - 1; j++) {
            if (j == 1 || j == 2 * i - 1) printf("%c", str[n - i - 1 + j]);
            else printf(" ");
        }
        printf("\n");
    }

    return 0;
}

Explanation

• The program prints the input string in a pattern where creating an effect of expanding and contracting rows.
• Prints the top triangular part with spaces and characters.
• Prints the inverted bottom triangular part with spaces and characters.

Output

    H
   E L
  L   L
 L     O
H       H
 L     O
  L   L
   E L
    H

30. Decode a String Pattern like a1b10

Code

#include <stdio.h>
#include <string.h>

int main() {
    char a[50], ch;
    int count = 0;
    
    scanf("%s", a); // Read the string input
    
    for (int i = 0; i < strlen(a); i++) {
        if (a[i] >= '0' && a[i] <= '9') { // If the character is a digit
            count = (count * 10) + (a[i] - '0'); // Build the count number
        } else if (count > 0) { // If count > 0, print character 'count' times
            count--;
            for (int j = 0; j < count; j++) {
                printf("%c", ch);
            }
            count = 0;
        }
        if (a[i] > '9') { // If the character is not a digit, it's a letter
            ch = a[i];
            printf("%c", a[i]);
        }
        if (i == strlen(a) - 1) { // Final adjustment for last character
            --count;
            for (int j = 0; j < count; j++) {
                printf("%c", ch);
            }
        }
    }
    return 0;
}

Explanation

• The code given here decodes a string pattern such as a1b10, where a1 indicates a should be repeated once and b10 indicates b should be repeated 10 times.
• Stores the number of a character to be repeated.
• The code loops through each character and its respective number, printing the character repeated by the number.

Output

abbbbbbbbbb

Here are the zoho interview questions with answers asked in HR interview:

1. Tell me something about yourself.

It is a popular icebreaker question. Begin with your name, educational qualification, and professional experience. You may briefly describe your achievements, strengths, and reasons for your interest in working at Zoho.

2. What are your skills?

Describe skills that apply to the job you are seeking. If you are seeking a technical job, describe programming languages, data structures, algorithms, or other tools you know. If you are switching careers, describe applicable courses, certifications, or internships.

3. What do you know about Zoho?

Zoho is a global software organisation offering cloud-based business software in 55+ product categories. They are best recognised for their ERP, CRM, office suite, and productivity software. They are preferred by leading companies worldwide for offering robust and scalable solutions.

4. Where do you see yourself in the next five years?

Be honest in your response. You can discuss learning and growing with Zoho, assuming more responsibilities, increasing your technical skills, or even leadership roles. The idea is to relate your goals to the company's core values.

5. Do you have any questions?

You can inquire about company culture, job title, team composition, or career advancement opportunities here. You must pose the right questions that demonstrate you are sincerely curious about the job and company.

6. Explain an experience in which you had to deal with a challenging problem and how you handled it.

One problem that I faced while doing my final year project was the process of implementing a new feature in our software. The feature was not compatible with other modules, and the deadline was approaching. Various solutions were attempted, we brainstormed as a team, and through trial and error, we were able to devise a workaround which enabled the integration to be successfully completed. By remaining patient and going step by step, I was able to resolve the problem and deliver the project within the time limit, meanwhile learning valuable lessons in debugging and team working.

7. Why should we hire you?

I think I am suitable for this position due to my technical skills, problem-solving skills, and learning nature. I am sure that I will be able to help Zoho achieve its objectives by applying my knowledge in [mention relevant skills] to effectively solve problems. My strong work ethic and capacity to work well in a team will also enable me to blend well with the company culture and contribute to the success of the team.

8. What motivates you to work hard?

I am motivated by the zeal for continuous learning and development in my professional life. The fact that I am able to solve complex issues and arrive at solutions that can lead to positive change in the world motivates me to perform to the best of my abilities. I am motivated by the possibility of contributing to a business and a team's success.. I strive hard for my personal and professional development and always seek to further my knowledge and skills. 

9. How do you prioritize your tasks?

I organize my work by addressing the most critical and pressing ones first. I divide larger projects into smaller, manageable pieces and assign realistic timelines to them. I employ tools such as to-do lists and task apps to remain organized. I tackle tasks according to their urgency and importance, and I redefine priorities continuously as new tasks or problems emerge.

10. Can you describe a situation when you were part of a team? What did you do?

I am the team lead for my final year project during my graduation, and we are a team of four working on the development of a web application. I am responsible for handling the back-end operations and ensuring the server-side logic is efficient and secure. I used to work closely with the front-end team to ensure the front-end and back-end interfaces were seamless. There were integration problems, but I was able to debug and sort them out by communicating effectively with my team. Because of this, we were able to deliver the project successfully on time. I am an open communicator and like working collaboratively, and this works well for teams to overcome problems.

11. How do you stay up to date with new technology trends?

I keep myself informed of technology trends through reading technology blogs on a daily basis, participating in webinars, and taking online courses about emerging technologies. I am an active member of certain developer communities and groups in which experts share their opinions regarding the latest tools and frameworks. I also enjoy trying out emerging technologies by contributing to personal projects, which makes me aware of how they work and how to use them in real-world scenarios.

12. Do you have any questions for me/us?

This is your chance to demonstrate a true interest in the company and the job. Here are some examples of good questions:

• What does a typical day look like for an employee who is working in this position?
• How does Zoho support professional growth in its employees?
• Could you describe the team that I'll be joining?
• What are the biggest problems the team is facing right now, and how can I help solve them?
• What are the opportunities for professional growth and advancement in the company?

Here are the tips for zoho interview preparation:

• Know Your Resume: Be accurate with all the items mentioned, including projects, internships, and skills.
• OOP Concepts: Update inheritance, polymorphism, encapsulation, and abstraction for technical interviews.
• Prepare for Behavioral Questions: Get ready to answer questions such as "Why Zoho?", "Strengths and weaknesses?", and "Tell me about a challenge you overcame."
• SQL & DBMS: Update SQL queries, normalization, and indexing to answer database-related questions.
• Research Zoho: Read the company's mission, values, and work culture to practice your responses for the interview.
• Mock Interviews: Practice mock interviews to gain confidence and problem-solving communication.
• Real-Life Problem Solving: Prepare yourself to answer how you would handle real-life problems or situations concerning the job.
• Stay Calm and Confident: Stay calm, think and prepare in advance before giving answers, and speak clearly in all rounds of the interview.

To conclude, preparing for a Zoho interview is all about being ready. It's important to have a good understanding of programming languages, strong problem-solving skills, and the confidence to discuss your experiences and goals. Spending time reviewing topics like coding challenges, data structures, algorithms, and Zoho's values can significantly improve your chances of making a good impression. Whether you're pursuing a position as a software developer, QA, or web developer, being well-prepared is key to succeeding in the interview process. Good luck!

1. What are 5 rounds in Zoho?

• Aptitude & Technical Written Test: Aptitude and programming questions.
• Simple Coding Round: Simple code questions.
• Complex Coding Round: Hard coding and system design.
• Technical Interview: Deep technical discussion and problem-solving.
• HR Interview: Evaluation of interpersonal and company fit skills.

2. What is Zoho's first round interview?

The first is a written interview with aptitude and technical, with logical reasoning, problem-solving, and simple programming questions.

3. Is cracking Zoho difficult?

Zoho cracking is not difficult but demanding. It is demanding with dedicated practice, more in system design and coding for those experienced.