Developer Engineer

Ecommerce page, which u can add items, make them persistence and delete them,api provided regarding data

Describe closure using an example?
Different between java and javascript?
Setback of closures?
Explain undeclared and undefined variables?
What is ASync javascript? 
What is await in Async javascript?
Where do you use it in ur project?

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].

Kevin has given you a Singly Linked List that contains only integers. You have to determine if it forms a cycle or not.

A cycle occurs when a node's next pointer points back to a previous node in the list.