Associate Software Engineer

1. What is kernel? 
2. What do you mean by process synchronization?
3. Explain demand paging.

1. Write a query to retrieve the first four characters of EmpLname from the EmployeeInfo table.
2. Write a query to find the names of employees that begin with ‘S’.

You have been given a 2-D array 'mat' of size 'M x N' where 'M' and 'N' denote the number of rows and columns, respectively. The elements of each row are sorted in non-decreasing order.

Moreover, the first element of a row is greater than the last element of the previous row (if it exists).

You are given an integer ‘target’, and your task is to find if it exists in the given 'mat' or not.

Example:

Input: ‘M’ = 3, 'N' = 4, ‘mat’ = [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]], ‘target’ = 8

Output: true

Explanation: The output should be true as '8' exists in the matrix.

You are given a string S of length N. Your task is to find the index(considering 1-based indexing) of the first unique character present in the string. If there are no unique characters return -1.

Note

A unique character in a string is the character that appears only once in the string. For example, ‘h’, ‘e’, and ‘o’ are the unique characters in the string “hello”.

Tell me about yourself?

What is more important to you the money or the job?