SDE - 1

You are working at a factory that produces electronic components. Each component is assigned a unique serial number. As part of a new quality control initiative, a component is flagged for inspection if its serial number is evenly divisible by a specific integer K.

You are given a batch of N components, represented by an array A of their serial numbers, and a single integer K. Your task is to count how many components in this batch need to be flagged for inspection.

You are given an array 'arr' of length 'n', consisting of integers.

A subarray is a contiguous segment of an array. In other words, a subarray can be formed by removing 0 or more integers from the beginning and 0 or more integers from the end of an array.

Find the sum of the subarray (including empty subarray) having maximum sum among all subarrays.

The sum of an empty subarray is 0.

Example :

Input: 'arr' = [1, 2, 7, -4, 3, 2, -10, 9, 1]

Output: 11

Explanation: The subarray yielding the maximum sum is [1, 2, 7, -4, 3, 2].

You have been given ‘N’ courses and some courses may have prerequisites. Now consider a matrix ‘PREREQUISITES’ of size 'M' x 2 which represents that you must complete the course 'PREREQUISITES[i][1]' before the course 'PREREQUISITES[i][0]'.

Your task is to return the order of courses you should take to finish all courses.

Note:

If it is impossible to finish all courses, return an empty array. If there are multiple answers, return any one.

For example:

Input:
3 2
1 2
2 3

There are three courses to take. To start with, First course 3 is taken. Then course 2 is taken for which course 3 must be completed. 

At last course 1 is taken for which course 2 must be completed. So the correct course order is [3,2,1].    

• Semaphores
• Pagination
• CRUD Operations
• OOP Principles
• Indexing
• Methods and Functions with Examples

Given 3 bulbs, and their switches are placed in another room.
One of the bulbs is not working.
How will you identify which bulb is connected to which switch, considering both the switches and the bulbs are in different rooms?