Hamsa Soham Healthcare Software Engineer Interview Questions and Answers

Q1. Anagram of two strings in java
Ans. 
Java program to check if two strings are anagrams
• Create a function that takes two strings as input

• Convert both strings to character arrays and sort them

• Check if the sorted arrays are equal to determine if they are anagrams
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Q2. Insert and select query in MySQL
Ans. 
Insert and select data in MySQL using SQL queries
• Use INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...); to insert data

• Use SELECT * FROM table_name; to select all data from a table

• Use SELECT column1, column2 FROM table_name WHERE condition; to select specific data based on a condition
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Q3. Get and Post APIs in rest
Ans. 
GET and POST are HTTP methods used in REST APIs for retrieving and sending data.
• GET method is used to retrieve data from a server

• POST method is used to send data to a server

• GET requests are idempotent, while POST requests are not

• GET requests should only be used for retrieving data, not for modifying data

• Example: GET request to retrieve a list of users - GET /users

• Example: POST request to create a new user - POST /users
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They were very strict about the test and asked various questions from various topics from java, python, oops etc.

Covered all topics from DBMS, Data Structures and Algorithmes, Debugging, error detection, code output etc.

The interview session took 30 minutes

Q1. Implement java code to filter given data from a list using the Java Stream API
Ans. 
Implement Java code to filter data from a list using Java Stream API
• Use Stream.filter() method to filter data based on a given condition

• Use lambda expressions to define the filtering condition

• Collect the filtered data using Collectors.toList() method
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Q1. What is difference between inner join and full join
Ans. 
Inner join returns only the matching rows between two tables, while full join returns all rows from both tables.
• Inner join only includes rows that have a match in both tables

• Full join includes all rows from both tables, filling in NULL values for non-matching rows

• Inner join is more commonly used than full join in practice

• Example: Inner join - SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id

• Example: Full ...read more
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Q1. Write a program to check given input is palindrome or not
Ans. 
Program to check if input is a palindrome or not
• Create a function that takes a string input

• Remove all non-alphanumeric characters and convert to lowercase

• Compare the original string with its reverse to check if it's a palindrome
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Q2. What is the difference between HashMap and HashSet.

Ans. 

HashMap is a key-value pair data structure while HashSet is a collection of unique elements.

• HashMap stores key-value pairs while HashSet stores unique elements

• HashMap allows duplicate values but keys must be unique, HashSet does not allow duplicates

• Example: HashMap map = new HashMap<>(); HashSet set = new HashSet<>()

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