Agiliad Technologies Interview Questions and Answers

A closure is a function that has access to its own scope, as well as the scope in which it was defined.

• A closure allows a function to access variables from its outer function even after the outer function has finished executing.

• Closures are commonly used in event handlers, callbacks, and asynchronous programming.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { cons...read more

Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during the compilation phase.

• Variable and function declarations are hoisted to the top of their scope.

• Only declarations are hoisted, not initializations.

• Function declarations take precedence over variable declarations.

• Example: console.log(myVar); var myVar = 10; // Output: undefined

• Example: ...read more

Reverse the elements in the array of strings

• Iterate through the array and swap the elements from start to end

• Use two pointers, one at the start and one at the end, and swap the elements until they meet

• Use a temporary variable to store the element being swapped

O(n) refers to linear time and space complexity.

• O(n) means that the time or space required by an algorithm grows linearly with the size of the input.

• It implies that the algorithm's performance is directly proportional to the input size.

• For example, if an algorithm takes 10 seconds to process 100 elements, it would take 20 seconds to process 200 elements.

• O(n) complexity is considered efficient and desirable in most...read more

Using JAVA loop iteration to split alphabet, number and symbols in a given string.

• Create three empty string arrays for alphabet, number and symbol

• Loop through each character in the given string

• Check if the character is an alphabet, number or symbol using ASCII values

• Add the character to the respective array

• Return the array of strings containing alphabet, number and symbol

Bug life cycle is the process of identifying, reporting, fixing, and verifying software bugs.

• Bug is identified by testers or users

• Bug is reported to the development team

• Development team analyzes and reproduces the bug

• Bug is assigned to a developer for fixing

• Developer fixes the bug and marks it as resolved

• Bug is retested by testers

• If bug is not fixed, it is reopened and assigned back to developer

• Once bug is fixed a...read more