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I applied via Job Portal and was interviewed before Jul 2019. There were 5 interview rounds.
Logistic Regression is a statistical method used to analyze the relationship between a dependent variable and one or more independent variables.
It is used to predict a binary outcome (0 or 1).
It estimates the probability of an event occurring.
It can handle both continuous and categorical independent variables.
Multivariate categorical variables can be used by creating dummy variables for each category.
ANOVA and t-tests are statistical methods used to compare means of two or more groups.
ANOVA is used to compare means of three or more groups, while t-tests are used for two groups.
ANOVA tests if there is a significant difference between the means of the groups, while t-tests compare the means of the groups to see if they are significantly different.
ANOVA uses F-test to determine significance, while t-tests use t-distri...
I applied via Job Portal and was interviewed before Dec 2022. There were 2 interview rounds.
I applied via LinkedIn and was interviewed in Jun 2021. There were 3 interview rounds.
I applied via Naukri.com and was interviewed before Jun 2021. There were 3 interview rounds.
DHL SmarTrucking interview questions for popular designations
I applied via LinkedIn and was interviewed before Feb 2021. There were 2 interview rounds.
Top trending discussions
I applied via Approached by Company and was interviewed in Aug 2021. There were 3 interview rounds.
Assignment to develop a prototype
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
Will be given Requirement to write code for Restraunt. Based on that have write code for delivering orders by delivery boys.
I applied via Recruitment Consulltant and was interviewed before Aug 2023. There were 2 interview rounds.
The current project follows a microservices architecture with Docker containers for scalability and flexibility.
Microservices architecture is used to break down the application into smaller, independent services that can be developed, deployed, and scaled independently.
Docker containers are utilized for packaging the application and its dependencies into a standardized unit for easy deployment and management.
Service di...
Basic coding questions
Standard dsa questions, easy to medium
I applied via Company Website and was interviewed in Dec 2021. There were 3 interview rounds.
LRU caching is a technique to store frequently used data in cache memory to improve performance.
LRU stands for Least Recently Used.
It removes the least recently used item from the cache when the cache is full.
It uses a doubly linked list and a hash map to implement the cache.
When an item is accessed, it is moved to the front of the list.
When the cache is full, the item at the end of the list is removed.
Example: Java Li...
Producer-consumer problem involves synchronization between threads to avoid race conditions.
Producer produces data and adds it to a shared buffer
Consumer consumes data from the shared buffer
Synchronization is required to avoid race conditions
Code example: https://www.geeksforgeeks.org/producer-consumer-solution-using-threads-in-java/
To check if a tree is a BST or not.
Traverse the tree in-order and check if the values are in ascending order.
For each node, check if its value is greater than the maximum value of its left subtree and less than the minimum value of its right subtree.
Recursively check if the left and right subtrees are also BSTs.
Reverse a single linked list.
Iterate through the list and change the direction of the pointers
Keep track of the previous, current and next nodes
Set the head of the list to the last node after reversing
Print all anagrams of same type in same line from array of Strings
Create a HashMap with sorted string as key and list of anagrams as value
Iterate through array and add each string to corresponding list in HashMap
Print all values in HashMap
Java 8 introduced lambda expressions, functional interfaces, streams, and default methods.
Lambda expressions allow functional programming in Java.
Functional interfaces are interfaces with a single abstract method.
Streams provide a way to process collections of data in a functional way.
Default methods allow interfaces to have implementation.
Date and Time API improvements.
Nashorn JavaScript engine added.
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