Aithent Technologies Interview Questions, Process, and Tips

HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.

• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.

• If multiple keys hash to the same index, a collision occurs and the pairs are stored in a linked list at that index.

• To...read more

Using Java 8 stream to separate odd and even numbers in an array.

• Use stream filter to separate odd and even numbers.

• Use stream collect to collect odd and even numbers into separate lists.

var, let, and const are used for variable declaration in JavaScript. ES6 concepts include arrow functions and block-scoped variables.

• var is function-scoped, let and const are block-scoped

• let and const support block-level scoping, reducing the risk of variable hoisting

• const variables cannot be reassigned, but their properties can be modified

• ES6 introduces arrow functions for concise syntax and lexical scoping

• State and p...read more