10+ Biocon Limited Interview Questions and Answers

Use dynamic programming to find the shortest path sum with negative integers allowed in a matrix.

• Implement dynamic programming to store the minimum sum at each cell

• Consider negative integers when calculating the sum of the path

• Start from the top left cell and iterate through the matrix to find the shortest path sum

Change detection strategy in Angular is a mechanism used to detect changes in the application state and update the view accordingly.

• Angular uses Zone.js for change detection by default

• Change detection can be triggered manually using ChangeDetectorRef

• Optimizing change detection using OnPush strategy

Closure is a function that captures the variables from its surrounding scope, even after the surrounding function has finished executing.

• Closure allows a function to access and manipulate variables from its outer scope.

• It maintains a reference to its outer scope, even after the outer function has returned.

• Closure is commonly used in event handlers and callbacks.

var is function scoped, let is block scoped, const is block scoped and cannot be reassigned.

• var is function scoped, let is block scoped, const is block scoped and cannot be reassigned

• var can be redeclared and updated, let can be updated but not redeclared, const cannot be redeclared or updated

• Example: var x = 10; let y = 20; const z = 30;

Rxjs operators are used for handling asynchronous operations in reactive programming.

• Map operator: transforms the items emitted by an Observable

• Filter operator: emits only those items from an Observable that pass a specified condition

• Merge operator: combines multiple Observables into one by merging their emissions

• SwitchMap operator: switches to a new Observable each time it is emitted

• DebounceTime operator: emits a value from the source Observable only after a specified time h...read more

Design a generic tool in pyspark to connect to multiple databases, fetch results, handle null values, and store output in another database

• Use pyspark to create a tool that can connect to databases like mysql, s3, or api

• Implement functions to fetch data from the databases and perform transformations like handling null values

• Utilize pyspark to store the transformed data in another database

• Consider using pyspark SQL functions for data transformations

To find the next highest number, sort the numbers in ascending order and find the number immediately greater than the given number.

• Sort the numbers in ascending order

• Find the number immediately greater than the given number

• Return the next highest number

Optimizing build in Angular involves reducing bundle size, enabling lazy loading, using AOT compilation, and leveraging tree shaking.

• Reduce bundle size by removing unused code and optimizing imports

• Enable lazy loading to load modules on demand instead of all at once

• Use Ahead-of-Time (AOT) compilation to pre-compile templates and reduce runtime overhead

• Leverage tree shaking to eliminate dead code and reduce bundle size

Count the number of islands in a given grid of '1's and '0's.

• Iterate through the grid and for each '1' encountered, perform a depth-first search to mark all connected '1's as visited.

• Increment the island count for each new island encountered.

• Consider edge cases like grid boundaries and handling visited cells.

Testcases for lift ATM

• Test if the lift buttons are responsive

• Test if the lift stops at the correct floor

• Test if the lift door opens and closes properly

• Test if the emergency button works

• Test if the lift displays the correct floor number

Memory leaks can be detected and prevented by monitoring memory usage, using memory profiling tools, avoiding circular references, and properly managing event listeners.

• Monitor memory usage regularly to identify any abnormal increases.

• Use memory profiling tools like Chrome DevTools or Valgrind to analyze memory usage.

• Avoid creating circular references in your code, as they can prevent objects from being garbage collected.

• Properly manage event listeners by removing them when t...read more

Find the length of the longest substring without repeating characters.

• Use a sliding window approach to keep track of the longest substring without repeating characters.

• Use a hashmap to store the index of each character as you iterate through the string.

• Update the start index of the window when a repeating character is encountered.

I come from a close-knit family with strong values and traditions.

• My family consists of my parents, siblings, and extended relatives who all support and care for each other.

• We have regular family gatherings and celebrations to strengthen our bond.

• Our family values include honesty, respect, and hard work which have been instilled in me from a young age.

SQL queries for Quality Analyst position

• Use SELECT statement to retrieve data from database

• Use WHERE clause to filter data based on specific conditions

• Use JOIN clause to combine data from multiple tables

• Use GROUP BY clause to group data based on specific columns

• Use ORDER BY clause to sort data in ascending or descending order

Spring code is used for building Java applications with ease and efficiency.

• Use @ComponentScan annotation to automatically detect and register Spring beans

• Use @Autowired annotation for dependency injection

• Use @RequestMapping annotation to map HTTP requests to specific handler methods

Throttling in JavaScript is a technique used to control the rate at which a function is executed.

• Throttling limits the number of times a function can be called over a specified period.

• It is commonly used in scenarios like scroll events, resize events, and API requests to prevent performance issues.

• Example: Debouncing a search input to limit the number of API calls made while typing.

The minimum number of planes needed to cover the earth is determined by the size of the planes and the coverage area.

• The minimum number of planes needed to cover the earth depends on the size of the planes and the coverage area.

• Factors such as speed, fuel capacity, and range of the planes also play a role in determining the minimum number needed.

• For example, if each plane can cover 1000 square miles and the earth's total surface area is approximately 196.9 million square mile...read more

Find the maximum sum of a subarray within an array of integers.

• Iterate through the array and keep track of the current sum and maximum sum seen so far.

• If the current sum becomes negative, reset it to 0 as it won't contribute to the maximum sum.

• Return the maximum sum found after iterating through the entire array.