Gateway Group Web Developer Interview Questions and Answers

Print all strings in an array

• Use a loop to iterate through the array

• Print each string in the array

Use the formula for sum of natural numbers to find the missing number.

• Calculate the sum of numbers from 1 to 100 using the formula n*(n+1)/2

• Find the actual sum of numbers from 1 to 100

• Subtract the actual sum from the calculated sum to find the missing number

To convert a stack to a heap, you can use a sorting algorithm like heapify.

• Use a sorting algorithm like heapify to rearrange the elements in the stack into a heap structure.

• Heapify the stack by starting from the last non-leaf node and moving up the tree.

• After heapifying the stack, the elements will be in a heap structure with the root node containing the maximum value.

OOPs (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.

• OOPs focuses on creating reusable code through classes and objects

• Encapsulation: bundling data and methods that operate on the data within a single unit

• Inheritance: allows a class to inherit properties and behavior from another class

• Polymorphism: ability for objects to be treated as instances of...read more

Session in PHP is a way to store information (variables) to be used across multiple pages during a user's visit to a website.

• Sessions are used to store user-specific information, such as username, shopping cart items, etc.

• Sessions are started with session_start() function and can be accessed using the $_SESSION superglobal array.

• Sessions are stored on the server and identified by a unique session ID, which is usually s