CSG International Senior Software Engineer Interview Questions and Answers

Classloaders are responsible for loading classes into the JVM at runtime.

• Java has three built-in classloaders: bootstrap, extension, and system.

• Custom classloaders can be created to load classes from non-standard sources.

• Classloaders follow a delegation model, where they first delegate to their parent classloader before attempting to load the class themselves.

• Classloaders can be used for dynamic class loading and hot-s...read more

The sliding window technique efficiently finds Pythagorean triplets in an array using two pointers.

• Sort the array to facilitate the two-pointer approach. Example: [3, 1, 4, 6, 5] becomes [1, 3, 4, 5, 6].

• Iterate through the array, fixing one element and using two pointers for the remaining elements.

• For each fixed element, check if the sum of squares of the two pointers equals the square of the fixed element.

• If a triplet...read more

Detect if two circular linked lists overlap

• Traverse both lists and check if they have the same tail node

• If they have different tail nodes, they do not overlap

• If they have the same tail node, check if they intersect at any point

• Use Floyd's cycle-finding algorithm to detect intersection point