Larsen & Toubro Limited Interview Questions and Answers

Association, aggregation, and composition are types of relationships between classes in object-oriented programming.

• Association is a relationship where two classes are related in some way, but not dependent on each other. Example: a student and a teacher.

• Aggregation is a type of association where one class contains a reference to another class, but the referenced class can exist independently. Example: a car has an engine.

• Composition is a type of aggregation where one class c...read more

Use binary search to find the target number in a rotated sorted array.

• Use binary search to find the pivot point where the array is rotated.

• Determine which half of the array the target number lies in based on the pivot point.

• Continue binary search in the appropriate half of the array to find the target number.

Printing the left view of a tree involves printing the leftmost nodes at each level of the tree.

• Traverse the tree using a level order traversal (BFS)

• At each level, print the first node encountered

• Repeat for each level until all nodes are visited

PUT is used to update or replace an existing resource, while POST is used to create a new resource.

• PUT is idempotent, meaning multiple identical requests will have the same effect as a single request.

• POST is not idempotent, meaning multiple identical requests may have different effects.

• PUT is typically used for updating an existing resource, like updating a user's information.

• POST is typically used for creating a new resource, like adding a new user to a database.

Functional interface is an interface with only one abstract method, used for lambda expressions.

• Functional interfaces can have multiple default or static methods, but only one abstract method.

• They are used for lambda expressions and method references in Java.

• Examples of functional interfaces in Java include Runnable, Callable, and Comparator.