BlackNGreen Interview Questions and Answers

Q1. Questions related to java and sql
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Q1. Approach realted questions
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Q1. Salary negotiation
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Q1. Android Specific, jetpack compose, viewmodels, language translations
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Q1. String DSA questions, reverse string, palindrome.
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Q1. Salary negotiation
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Round duration - 30 Minutes
Round difficulty - Easy

She asked me two problem one was on string and second one was on Linked List. and then she asked some topics from DBMS as Normalization, Keys and Query of getting second highest salary.

Q1. 
Reverse Linked List Problem Statement
Given a singly linked list of integers, return the head of the reversed linked list.
Example:
Initial linked list: 1 -> 2 -> 3 -> 4 -> NULL
Reversed link...read more
Ans. 
Reverse a singly linked list of integers and return the head of the reversed linked list.
• Iterate through the linked list and reverse the pointers to point to the previous node instead of the next node.

• Keep track of the previous, current, and next nodes while reversing the linked list.

• Update the head of the reversed linked list as the last node encountered during the reversal process.
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Q2. 
Reverse Words in a String: Problem Statement
You are given a string of length N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o...read more
Ans. 
Reverse words in a string while handling leading, trailing, and multiple spaces.
• Split the input string by spaces to get individual words

• Reverse the order of the words

• Join the reversed words with a single space in between

• Handle leading, trailing, and multiple spaces appropriately
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