SDE - 1

Tip 1: Understand the problem statement. Read it multiple times if necessary to grasp all the details.
Tip 2: Break down the problem into smaller parts or steps. This helps in understanding the problem better and solving it systematically.
Tip 3: If applicable, visualize or draw diagrams to represent the problem. This can often provide insights into possible solutions.

Tip 1: Understand the problem statement. Read it multiple times if necessary to grasp all the details.
Tip 2: Break down the problem into smaller parts or steps. This helps in understanding the problem better and solving it systematically.
Tip 3: If applicable, visualize or draw diagrams to represent the problem. This can often provide insights into possible solutions.

Tip 1: Understand the problem statement. Read it multiple times if necessary to grasp all the details.
Tip 2: Break down the problem into smaller parts or steps. This helps in understanding the problem better and solving it systematically.
Tip 3: If applicable, visualize or draw diagrams to represent the problem. This can often provide insights into possible solutions.

Tip 1: Understand the problem statement. Read it multiple times if necessary to grasp all the details.
Tip 2: For problems involving multiple steps or decisions, outline a clear plan or algorithm before starting to implement.
Tip 3: If the problem involves calculations, verify your computations to avoid errors.

Tip 1: Use examples or sample cases to validate your understanding of the problem and to test your solution.
Tip 2: Break down the problem into smaller parts or steps. This helps in understanding the problem better and solving it systematically.
Tip 3: Consider edge cases or special scenarios that might affect your solution. Ensure your solution is robust enough to handle these cases.

Tip 1: Revise the concepts thoroughly.
 

Step 1: I started by understanding the problem statement, which was to determine if a given string is a palindrome, ignoring non-alphanumeric characters and considering case-insensitively.

Step 2: My initial approach was to use Python's string manipulation functions to preprocess the string. I used str.lower() to convert all characters to lowercase and str.isalnum() to filter out non-alphanumeric characters.

Step 3: After preprocessing the string, I used two pointers approach to check if the string was a palindrome. One pointer started from the beginning and the other from the end of the string, moving towards each other, checking if characters at these pointers were equal.

Step 4: I wrote the code to implement this approach. First, I preprocessed the string to remove non-alphanumeric characters and convert it to lowercase. Then, I used two pointers technique to check if it's a palindrome.

Tip 1: Learn concepts in depth.
Tip 2: Always try to give examples to be more effective.
 

Tip 1: Learn concepts and practice on them.
Tip 2: Try to give examples to the interviewer to be more effective.

Tip 1: Provide a brief overview of your background, education, and professional experience.
 

Tip 1: Explain why you are excited about the opportunity and how it aligns with your career goals.
 

Tip 1: Provide an example of a difficult scenario you successfully navigated, emphasizing your problem-solving skills and teamwork.
 

Tip 1: Discuss your key strengths that are relevant to the position and how you manage or overcome your weaknesses.

Tip 1: Divide the balls into two groups of three and one group of two. Weigh the two groups of three against each other. If they balance, the heavier ball is in the group of two. If one group is heavier, pick two balls from that group and weigh them against each other. The heavier one is the heavier ball.