Nakilat Interview Questions and Answers

DHL stands for Dalsey, Hillblom, and Lynn, the surnames of the founders. It is a global logistics company.

• DHL is a multinational courier, parcel, and express mail service.

• It was founded in 1969 by Adrian Dalsey, Larry Hillblom, and Robert Lynn.

• DHL provides services for shipping, tracking, and delivering packages worldwide.

• The mean of DHL refers to the average or central tendency of the company's operations, such as rev...read more

Diameter of a binary tree is the longest path between any two leaf nodes.

• Calculate the height of left and right subtrees recursively.

• Calculate the diameter recursively using the formula max(left_height + right_height + 1, max(left_diameter, right_diameter)).

• Return the maximum diameter.

To find interchanged terms from an AP series

• Identify the common difference between terms

• Swap the positions of adjacent terms

• Check if the new series is also an AP

• Repeat until no more interchanged terms can be found

Database indexing is a technique to improve the performance of database queries.

• Indexing creates a data structure that allows for faster retrieval of data.

• Indexes are created on one or more columns of a table.

• Queries that use indexed columns can be executed faster.

• Indexes can be clustered or non-clustered.

• Clustered indexes determine the physical order of data in a table.

• Non-clustered indexes create a separate structure...read more