ServiceNow Staff Software Engineer Interview Questions and Answers

Program to check if a given number is prime or not.

• A prime number is only divisible by 1 and itself.

• Loop through numbers from 2 to n/2 and check if n is divisible by any of them.

• If n is divisible by any number, it is not prime.

• If n is not divisible by any number, it is prime.

Given an array, return a new array where each element is the product of all elements in the original array except the corresponding element.

• Create a new array of the same length as the input array

• Iterate through the input array and calculate the product of all elements except the current element

• Store the product in the corresponding position in the new array

• Return the new array

Design a database to store custom fields for a ticket.

• Identify the custom fields needed for a ticket

• Create a table for each custom field

• Link the tables to the main ticket table using foreign keys

• Use appropriate data types for each custom field

• Consider indexing frequently searched fields