Global Education Interview Questions and Answers

A program to find a palindrome word in a 2D matrix of strings.

• Iterate through each row and column of the matrix

• Check if each string is a palindrome using two pointers approach

• Return the first palindrome word found

Find the missing number from 1 million random numbers.

• Calculate the sum of all numbers from 1 to 1 million using the formula n(n+1)/2

• Calculate the sum of all the given numbers

• Subtract the sum of given numbers from the sum of all numbers to get the missing number

Design a traffic signal system

• Identify the number of lanes and intersections

• Determine the traffic flow and peak hours

• Choose appropriate sensors and controllers

• Implement a synchronization algorithm

• Consider emergency vehicle prioritization

• Include pedestrian crossing signals

• Ensure compliance with local regulations

Hashmap is a data structure that stores key-value pairs and provides constant time complexity for insertion, deletion, and retrieval.

• Hashmap uses hashing function to map keys to indices in an array

• Collisions can occur when multiple keys map to the same index, which can be resolved using separate chaining or open addressing

• Java implementation: HashMap map = new HashMap<>();

Printing patterns using code

• Identify the pattern to be printed

• Use loops to print the pattern

• Adjust the loop variables to control the pattern

• Use conditional statements to modify the pattern

• Examples: printing stars, triangles, squares, etc.

Common point in linked list refers to the node where two or more linked lists intersect.

• The common point can be found by traversing both linked lists and comparing the nodes.

• The common point can also be found by using two pointers, one for each linked list, and moving them until they meet at the common point.

• Examples include finding the intersection point of two linked lists or finding the loop in a linked list.

I am a detail-oriented business analyst with strong analytical skills and experience in data analysis and project management.

• Experienced in conducting market research and identifying business opportunities

• Skilled in data analysis and visualization using tools like Excel and Tableau

• Proficient in project management methodologies like Agile and Waterfall

• Strong communication and interpersonal skills for effective collabora...read more