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I applied via LinkedIn and was interviewed in Oct 2023. There were 2 interview rounds.
I applied via Naukri.com and was interviewed before Jul 2021. There were 3 interview rounds.
Java code to reverse a string with exception handling and waits in Selenium
Use StringBuilder to reverse the string
Use try-catch block for exception handling
Use implicit or explicit waits in Selenium for synchronization
Example: String originalString = "hello"; StringBuilder reversedString = new StringBuilder(originalString).reverse();
Example: try { // code that may throw exception } catch (Exception e) { // handle excep
posted on 19 Feb 2020
I applied via Naukri.com and was interviewed in Aug 2019. There were 4 interview rounds.
posted on 1 May 2024
Keywords in Java are reserved words that have special meaning and cannot be used as identifiers.
public
static
void
class
extends
posted on 28 Jun 2024
I applied via LinkedIn and was interviewed in May 2024. There was 1 interview round.
Program to print occurrence of characters in a given string
Create a map to store characters and their counts
Iterate through the string and update the counts in the map
Print the characters and their counts from the map
Program to find sum of any two elements in an array equal to -1
Iterate through the array and for each element, check if there exists another element whose sum is equal to -1
Use a hashmap to store the elements and their indices for faster lookup
Handle edge cases like empty array or array with less than 2 elements
Example: For array [-2, 3, 5, -3, 8], the pairs (-2, 1) and (3, -3) have sum equal to -1
Use browser developer tools to inspect element and generate xpath
Inspect element using browser developer tools
Right click on element and select 'Copy' -> 'Copy XPath'
Modify generated xpath if needed to make it more robust
posted on 13 Aug 2022
I applied via Naukri.com and was interviewed in Jul 2022. There was 1 interview round.
Answers to questions related to automation testing using Selenium
Overloading is when a method has the same name but different parameters in the same class, while overriding is when a subclass provides its own implementation of a method already defined in its superclass
Locators in Selenium are used to identify web elements on a web page
The syntax of xpath locator is //tagname[@attribute='value']
Methods to write test cas...
posted on 1 Mar 2024
I appeared for an interview before Mar 2023.
posted on 10 Nov 2024
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
Code to count the occurrences of each letter in a string and print the result
Iterate through each character in the string
Use a dictionary to store the count of each letter
Print the count of each letter at the end
Appium server can be started using command line, programmatically in code, or using Appium desktop app.
Start Appium server using command line by running 'appium' command
Start Appium server programmatically in code using Appium server programmatically in code using AppiumDriverLocalService class
Start Appium server using Appium desktop app by launching the app and starting the server
Tests can be run parallel for mobile devices using test automation frameworks like Appium or Espresso.
Use test automation frameworks like Appium or Espresso to run tests parallel for mobile devices
Leverage cloud-based testing platforms like Sauce Labs or BrowserStack for parallel testing on multiple devices
Implement parallel test execution using tools like TestNG or JUnit in combination with Appium or Espresso
Utilize d...
Automating OTP in mobile involves using automation tools to interact with the OTP input field and validate the received OTP.
Use automation tools like Appium or Espresso to interact with the OTP input field
Extract the OTP from the message received on the mobile device
Validate the extracted OTP with the OTP input field
Handle scenarios where OTP validation fails
Desired capabilities are a set of properties or attributes that define the behavior of a browser or mobile device in Selenium automation testing.
Desired capabilities are key-value pairs that are used to configure the WebDriver instances in Selenium.
They can be used to set properties like browser name, version, platform, and other settings.
For example, setting 'browserName' to 'chrome' will launch the Chrome browser dur
To run tests on iOS or Android devices using Appium, specify the platformName capability in desired capabilities.
Specify platformName capability as 'iOS' for iOS devices and 'Android' for Android devices
Include other necessary desired capabilities like deviceName, platformVersion, appPackage, appActivity, etc.
Example: capabilities.setCapability('platformName', 'iOS');
Setting up automation for iOS devices involves using tools like Appium and Xcode for testing mobile applications.
Install Xcode on your Mac machine
Set up Appium for iOS automation
Connect your iOS device to the Mac machine
Create test scripts using Appium for iOS apps
Execute the test scripts on the connected iOS device
posted on 21 Mar 2024
I applied via Naukri.com and was interviewed before Mar 2023. There were 2 interview rounds.
I appeared for an interview before Mar 2021.
Round duration - 75 minutes
Round difficulty - Medium
This was an online coding round where we had 2 questions to solve under 75 minutes. I found both the questions to be of Easy to Medium level of difficulty.
You are given several sets of points on a 2D plane, each set represented as a list of coordinates. Your task is to determine if there exists a line parallel to the Y-axis...
The task is to determine if there exists a line parallel to the Y-axis that reflects given points symmetrically.
Iterate through each test case and check if a vertical reflection line exists for the given points
Calculate the midpoint of the x-coordinates and check if it reflects the points symmetrically
Consider edge cases where points are on the reflection line or have the same x-coordinate
You are provided with a 2-dimensional matrix having N
rows and M
columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...
Count the number of islands in a 2D matrix of 1s and 0s.
Iterate through the matrix and perform depth-first search (DFS) to find connected 1s.
Mark visited cells to avoid redundant traversal.
Increment island count whenever a new island is encountered.
Round duration - 60 minutes
Round difficulty - Medium
This round had 2 coding questions followed by some questions from DBMS.
You are given an array/list HEIGHTS
of length N
, where each element represents the height of a histogram bar. The width of each bar is considered to be 1.
Find the area of the largest rectangle that can be formed within the bounds of a given histogram.
Iterate through the histogram bars and calculate the area of the largest rectangle that can be formed using each bar as the height.
Use a stack to keep track of the indices of the bars in non-decreasing order of height.
Pop elements from the stack and calculate the area until a smaller height bar is encountered.
Update the max...
Given a string 'STR' consisting solely of the characters “{”, “}”, “(”, “)”, “[” and “]”, determine if the parentheses are balanced.
The first line contains an...
The task is to determine if a given string consisting of parentheses is balanced or not.
Iterate through the characters of the string and use a stack to keep track of opening parentheses.
If an opening parenthesis is encountered, push it onto the stack.
If a closing parenthesis is encountered, check if it matches the top of the stack. If it does, pop the stack, else the string is not balanced.
At the end, if the stack is e...
ACID properties in DBMS ensure data integrity and consistency in transactions.
Atomicity: All operations in a transaction are completed successfully or none at all.
Consistency: Data is always in a valid state before and after a transaction.
Isolation: Transactions are isolated from each other to prevent interference.
Durability: Once a transaction is committed, changes are permanent and survive system failures.
Example: If...
Levels of data abstraction in a DBMS refer to the different views of data provided to users and applications.
Physical level: Deals with how data is stored on the storage media. Example: data blocks, pages, indexes.
Logical level: Focuses on how data is represented to users. Example: tables, views, constraints.
View level: Provides a customized view of the database for specific users or applications. Example: queries, rep
Round duration - 60 minutes
Round difficulty - Medium
Standard DS/Algo round with 2 coding questions followed by 2 interesting puzzles.
You are provided with an undirected graph containing 'N' vertices and 'M' edges. The vertices are numbered from 1 to 'N'. Your objective is to determi...
Detect if an undirected graph contains a cycle by exploring all possible paths.
Use Depth First Search (DFS) algorithm to traverse the graph and detect cycles.
Maintain a visited set to keep track of visited vertices and a parent pointer to avoid visiting the same vertex twice.
If a visited vertex is encountered that is not the parent of the current vertex, a cycle is present.
Consider edge cases like disconnected graphs a
Given a matrix ARR
with dimensions N
* M
, consisting only of 0s and 1s where each row is sorted, determine the index of the row that contains the highest number of 1s. If multi...
Find the row with the maximum number of 1s in a sorted matrix.
Iterate through each row of the matrix and count the number of 1s in each row
Keep track of the row index with the maximum number of 1s
Return the index of the row with the highest count of 1s
By lighting both wires at the same time, the shorter wire will burn out first, allowing you to measure a specific duration of time.
Light both wires at the same time
Measure the time it takes for the shorter wire to burn out completely
The remaining length of the longer wire will indicate the specific duration of time
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.
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