Codewalla Interview Questions and Answers

Create a react table with a button to route to another page, trigger an API, and display data in tabular format.

• Create a React component for the table

• Add a button to the table rows

• Implement routing using React Router

• Handle button click event to navigate to another page

• On the new page, trigger an API call using Axios or Fetch

• Retrieve the data from the API response

• Display the data in tabular format using HTML table or a UI library like Material-UI

Write a program using class function and condition

• Create a class with relevant functions

• Use conditional statements to execute specific code

• Example: class Calculator with add() function and if-else statement to check input

• Example: class Student with calculateGrade() function and switch statement to assign grade

Use SQL query to retrieve the top 5 highest salaries from a table.

• Use the SELECT statement to retrieve the salary column

• Use the ORDER BY clause to sort the salaries in descending order

• Use the LIMIT clause to limit the results to the top 5 salaries

Check if 2 strings are anagrams.

• Convert both strings to lowercase

• Remove all non-alphabetic characters

• Sort the characters in both strings

• Compare the sorted strings, if they are equal, they are anagrams

Reverse a given string

• Use StringBuilder's reverse() method

• Convert the string to a StringBuilder, reverse it, then convert it back to a string