TTK Healthcare Interview Questions and Answers

Java collection framework provides interfaces and classes to store, manipulate, and retrieve collections of objects.

• Interfaces: List, Set, Map, Queue, Deque

• Classes: ArrayList, LinkedList, HashSet, HashMap, PriorityQueue

• Example: List interface is implemented by classes like ArrayList and LinkedList

SQL query to find the maximum mark of maths subject in a student table.

• Use the MAX() function to find the maximum mark in the maths subject column.

• Specify the maths subject column in the query.

• Include the student table name in the query.

Print duplicate character occurrences in a string.

• Iterate through the string and store character counts in a HashMap.

• Print characters with count greater than 1 to find duplicates.

Count the occurrence of each character in a given string.

• Create a map to store character counts

• Iterate through the string and update the counts in the map

• Print the character counts from the map

Use nested loops to compare each pair of elements and print the differences.

• Use nested loops to compare each pair of elements in the array.

• Calculate the absolute difference between each pair of elements.

• Print the differences between the array elements.