Senior Software Automation Test Engineer Interview Questions and Answers

Hashmaps store key-value pairs using hashing for fast retrieval. Singleton pattern ensures only one instance of a class exists.

• Hashmaps use hashing to map keys to values for efficient retrieval

• Singleton pattern restricts a class to have only one instance and provides a global point of access to it

• Internal working of Hashmaps involves hashing the key to determine the index where the value is stored

• Singleton pattern can be implemented using static instance variable and private ...read more