10000.com Interview Questions and Answers

PreOrder traversal without recursion is done using a stack to simulate the function call stack.

• Create an empty stack and push the root node onto it.

• While the stack is not empty, pop a node from the stack and process it.

• Push the right child of the popped node onto the stack if it exists.

• Push the left child of the popped node onto the stack if it exists.

Yes

• Create an empty binary search tree (BST)

• Loop over the unsorted array

• For each element, insert it into the BST using the appropriate insertion logic

• Repeat until all elements are inserted

• The resulting BST will be built from the unsorted array

The question asks to find two elements in an array whose sum is equal to a given number.

• Iterate through the array and for each element, check if the difference between the given number and the current element exists in the array.

• Use a hash set to store the elements as you iterate through the array for efficient lookup.

• Return the pair of elements if found, otherwise return a message indicating no such pair exists.

There are two types of triggers: DML triggers and DDL triggers.

• DML triggers are fired in response to DML (Data Manipulation Language) statements like INSERT, UPDATE, DELETE.

• DDL triggers are fired in response to DDL (Data Definition Language) statements like CREATE, ALTER, DROP.

• Examples: A DML trigger can be used to log changes made to a table, while a DDL trigger can be used to enforce certain rules when a table is alt

Yes, triggers can be used with select statements in SQL.

• Triggers are database objects that are automatically executed in response to certain events, such as insert, update, or delete operations.

• While triggers are commonly used with insert, update, and delete statements, they can also be used with select statements.

• Using triggers with select statements allows you to perform additional actions or validations before or af...read more

Indexing in MySQL improves query performance. There are several types of indexing in MySQL.

• Indexes are used to quickly locate data without scanning the entire table.

• Types of indexing in MySQL include B-tree, hash, full-text, and spatial indexes.

• B-tree indexes are the most common and suitable for most use cases.

• Hash indexes are used for exact match lookups.

• Full-text indexes are used for searching text-based data efficie...read more

Engines in MySQL are the underlying software components that handle storage, indexing, and querying of data.

• MySQL supports multiple storage engines, each with its own strengths and features.

• Some commonly used engines in MySQL are InnoDB, MyISAM, and Memory.

• InnoDB is the default engine in MySQL and provides support for transactions and foreign keys.

• MyISAM is known for its simplicity and speed but lacks transaction suppo...read more

Yes, a constructor can be private.

• A private constructor can only be accessed within the class itself.

• It is often used in singleton design pattern to restrict object creation.

• Private constructors are also useful for utility classes that only contain static methods.

I am a Senior Associate in the field of finance, specializing in investment management.

• I have expertise in analyzing financial data and making investment recommendations.

• I work closely with clients to understand their financial goals and risk tolerance.

• I monitor market trends and economic indicators to make informed investment decisions.

• I have experience in portfolio management and asset allocation.

• I may hold certifica...read more

My ambition is to become a respected leader in my field, making a positive impact through innovative solutions and mentorship.

• To continuously learn and grow in my role

• To lead and inspire a team towards success

• To contribute to the advancement of the organization and industry

• To mentor and guide junior colleagues in their professional development

I am a detail-oriented analyst with a strong background in data analysis and problem-solving skills.

• I have a Bachelor's degree in Economics with a focus on statistical analysis

• I have experience using various data analysis tools such as Excel, SQL, and Tableau

• I have successfully completed projects that involved forecasting trends and identifying key insights from data

I chose this company because of its strong reputation, innovative projects, and commitment to employee growth.

• Strong reputation in the industry

• Innovative projects and technologies

• Commitment to employee growth and development

I am interested in the Analyst position.

• Strong analytical skills

• Experience with data analysis tools

• Ability to interpret complex data

• Excellent problem-solving abilities

I possess strong analytical skills, attention to detail, and proficiency in data analysis tools.

• Strong analytical skills demonstrated through previous data analysis projects

• Attention to detail shown in accuracy of reports and presentations

• Proficiency in data analysis tools such as Excel, SQL, and Tableau

The number of airplanes taking off from Delhi airport daily is not available.

• The exact number of airplanes taking off from Delhi airport each day is not publicly available.

• The number of flights can vary depending on the day of the week and time of day.

• Factors such as weather conditions and air traffic can also affect the number of flights.

• However, Delhi airport is one of the busiest airports in India and handles a larg...read more