CCS Presentation Systems Interview Questions and Answers

Program to find last non-repeating character in a given string using Java 8 functions only.

• Use Java 8 Streams and Lambda's to filter the string and find the last non-repeating character.

• Create a Map to store the frequency of each character in the string.

• Use the filter() method to get the non-repeating characters and find the last one using reduce().

Find the top 3 employees based on ratings in an employee table.

• Sort the employee table based on ratings in descending order.

• Select the top 3 employees from the sorted table.

• Return the selected employees as the result.

Modify Employee class to consider objects with same names as duplicates.

• Add a static HashSet to keep track of unique names.

• Override equals() and hashCode() methods to compare names.

• In the constructor, check if the name already exists in the HashSet and mark it as duplicate if true.