PureSoftware Interview Questions, Process, and Tips

HashMap is not thread-safe while ConcurrentHashMap is thread-safe.

• HashMap is not thread-safe and can lead to ConcurrentModificationException if modified during iteration.

• ConcurrentHashMap allows concurrent read and write operations without the need for external synchronization.

• ConcurrentHashMap achieves thread-safety by dividing the map into segments, allowing multiple threads to operate on different segments concurren

To find the third highest salary in a SQL table, use the 'SELECT DISTINCT' statement with 'ORDER BY' and 'LIMIT'.

• Use 'SELECT DISTINCT' to avoid duplicates

• Order the salaries in descending order using 'ORDER BY'

• Use 'LIMIT 2,1' to skip the first two highest salaries and retrieve the third highest salary

Python program to find smallest integer greater than square root of a given number.

• Use math module to calculate square root of the given number.

• Use math.ceil() function to round up the square root to the nearest integer.

• Add 1 to the rounded up square root to get the smallest integer greater than square root.

SQL query to list employees with third highest salary

• Use the 'ROW_NUMBER()' function to assign a rank to each employee based on salary

• Filter the results to only include employees with a rank of 3

Stemming and lemmatization are techniques used in natural language processing to reduce words to their base or root form.

• Stemming is the process of reducing words to their base or root form by removing suffixes.

• Example: 'running' becomes 'run' after stemming.

• Lemmatization is the process of reducing words to their base or root form while still ensuring that the reduced form belongs to the language.

• Example: 'better' beco

String operations in Tosca Automation involve manipulating and validating strings in test scripts.

• Use functions like 'contains', 'startsWith', 'endsWith' for string validation

• Use 'concatenate' function to combine multiple strings

• Use 'substring' function to extract a portion of a string

Swift & Objective-C are programming languages used for iOS development. Tableview in SwiftUI uses List view. RxSwift is a reactive programming framework. Optional & Generics are Swift features. Protocol Composition is combining multiple protocols.

• Swift & Objective-C are used for iOS development

• Tableview in SwiftUI uses List view

• RxSwift is a reactive programming framework for Swift

• Optional allows variables to have a 'no...read more