10+ Aalanna Projects Interview Questions and Answers

You are given a binary search tree of integers with N nodes. You are also given references to two nodes P and Q from this BST.

Your task is to find the lowest common ancestor(LCA) of these two given...read more

You have been given an array/list “BOOKINGS” of booking details of ‘N’ flights from 1 to ‘N’. Each booking detail contains three positive integers [first, last, seats] which represent a...read more

You have been given a root node of the binary search tree and a positive integer value. You need to perform an insertion operation i.e. inserting a new node with the given value ...read more

You have been given a Snake and Ladder Board with 'N' rows and 'N' columns with the numbers written from 1 to (N*N) starting from the bottom left of the board, and alternating direction each row...read more

Given an arithmetic expression containing '+', '-', '*' operators, generate a string by placing parenthesis in the given expression which will return the the maximum possible value of that...read more

Given a Binary Tree, print left view of it. The left view of a Binary Tree is set of nodes visible when the tree is visited from the left side.

1. Working of PING and TRACEROUTE command
2. OSI layers and it’s responsibility
3. Indexing in database
4. B/B+ tree used in index, asked me to explain node structure of both
5.Question based u...read more

Return the length of the longest substring consisting of unique characters.

eg: abcabcdb ------> 4 4 corresponds to abcd

aaaaaxxxxxxwyzzzzzxxxxx ------> 4 4 corresponds to xwyz

Suggest the best way to get the minimum (at any point of time) from a bag in which numbers are being inserted and removed continuously.

Mr. X runs a neet of 10 cabs at a renowned cab company. The cab company has two types of tlme based slots for differential payment Peak hours (0800-1000 , 1600-1800) payment ls X and off peak h...read more