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Welcome to Week 1! Make sure you’re muted Turn on your webcam! Feel free to talk in the room chat CodePath Intermediate Software Engineering

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• Intros • Why study programming problems? • Goals • Breakout sessions - meet your pod! • Top 5 coding interview mistakes
 and how to avoid them • Free form Q&A! Agenda

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Intros!

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Coding Interviews are difficult

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Coding Interviews are difficult Like most things in life, 
 luck plays a big factor

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Coding Interviews are difficult Like most things in life, 
 luck plays a big factor Luck is when preparation meets opportunity

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Goals for the course

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Goals for the course • Be able to go into phone screens with confidence

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Goals for the course • Be able to go into phone screens with confidence • Most questions follow the same pattern! • The key is repeated practice
 


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Goals for the course • Be able to go into phone screens with confidence • Most questions follow the same pattern! • The key is repeated practice
 
 • Learn more about the tech industry

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Goals for the course • Be able to go into phone screens with confidence • Most questions follow the same pattern! • The key is repeated practice
 
 • Learn more about the tech industry • Land an internship -> key to full time offer

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How are we going to work towards the goal?

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How are we going to work towards the goal? • Lectures to reinforce concepts and walkthrough techniques

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How are we going to work towards the goal? • Lectures to reinforce concepts and walkthrough techniques • In class exercises for hands-on practice

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How are we going to work towards the goal? • Lectures to reinforce concepts and walkthrough techniques • In class exercises for hands-on practice • Extra practice problems and review materials to help you fill potential gaps

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How are we going to work towards the goal? • Lectures to reinforce concepts and walkthrough techniques • In class exercises for hands-on practice • Extra practice problems and review materials to help you fill potential gaps • Weekly HackerRank assessments to keep yourself on track

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How are we going to work towards the goal? • Lectures to reinforce concepts and walkthrough techniques • In class exercises for hands-on practice • Extra practice problems and review materials to help you fill potential gaps • Weekly HackerRank assessments to keep yourself on track • Mentors, fellow classmates, instructors for help and support

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What is your personal goal for the next 12 weeks?

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Questions?

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Expectations Attend weekly sessions
 Tuesday @ 6pm PST, Saturday @ 10am PST Complete weekly HackerRank test
 *linked in course portal every week Optional resources: extra reading and practice problems

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https://courses.codepath.com/courses/ intermediate_software_eng Course Portal

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Course Portal

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Course Portal

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Course Portal

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Course Portal

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Questions /
 Comments?

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Pods / Teams

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Pods / Teams • 5-6 students per team • This is the group you’ll be working with for the next 12 weeks • Help support each other throughout the course!

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Mentors • This year we’ve recruited 50 mentors to help guide and support you through the course!

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Mentors • This year we’ve recruited 50 mentors to help guide and support you through the course! • Mentors are industry experts working in tech

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Mentors • This year we’ve recruited 50 mentors to help guide and support you through the course! • Mentors are industry experts working in tech • Each mentor is paired with a pod through the 12 weeks

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Mentors • This year we’ve recruited 50 mentors to help guide and support you through the course! • Mentors are industry experts working in tech • Each mentor is paired with a pod through the 12 weeks • Will be in breakout rooms with you on Saturdays to help mentor and guide you through exercises

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In class exercises

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In class exercises • Break out into small groups of 5-6 • Work on problems together for the topic of the week • Great practice for phone interviews!

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Our first in class exercise!

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Our first in class exercise! • Most common interview question: “Tell me a little about yourself”

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Our first in class exercise! In a moment, we’re all going to into small groups with our pods

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Our first in class exercise! In a moment, we’re all going to into small groups with our pods Start by having everybody introduce themselves in alphabetical order

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Our first in class exercise! In a moment, we’re all going to into small groups with our pods Start by having everybody introduce themselves in alphabetical order Take 5 minutes to prep for your answer (guidance in course portal). Your ‘spiel’ should be ~3 minutes

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Our first in class exercise! In a moment, we’re all going to into small groups with our pods Start by having everybody introduce themselves in alphabetical order Take 5 minutes to prep for your answer (guidance in course portal). Your ‘spiel’ should be ~3 minutes Take turns answering the question, jot down notes if you’re not the one speaking

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Our first in class exercise! In a moment, we’re all going to into small groups with our pods Start by having everybody introduce themselves in alphabetical order Take 5 minutes to prep for your answer (guidance in course portal). Your ‘spiel’ should be ~3 minutes Take turns answering the question, jot down notes if you’re not the one speaking Once everyone is done, get some feedback!

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Common Mistakes

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Common Mistakes • Not mentioning why you’re interested in the role / company

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Common Mistakes • Not mentioning why you’re interested in the role / company • Only talking about things that’s already on your resume

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Common Mistakes • Not mentioning why you’re interested in the role / company • Only talking about things that’s already on your resume • Not showing enthusiasm

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Common Mistakes • Not mentioning why you’re interested in the role / company • Only talking about things that’s already on your resume • Not showing enthusiasm • Not knowing about the company / role you’re interviewing for

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Great things to talk about • Interesting focuses / projects from past companies • Passion projects • Why you’re interested in the company • Specialities you’re interested in (Mobile, Machine Learning, …)

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Ready for our first breakout rooms?

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How’d it go?

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The key to acing interviews

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The myth: I have to get every problem correct in the most optimal way in the fastest time frame to pass

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The myth: I have to get every problem correct in the most optimal way in the fastest time frame to pass Top Common interview mistakes:
 - not communicating with interviewer


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The myth: I have to get every problem correct in the most optimal way in the fastest time frame to pass Top Common interview mistakes:
 - not communicating with interviewer
 - jumping to conclusions / solving the wrong problem


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The myth: I have to get every problem correct in the most optimal way in the fastest time frame to pass Top Common interview mistakes:
 - not communicating with interviewer
 - jumping to conclusions / solving the wrong problem
 - doesn’t catch or can’t fix bugs


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The myth: I have to get every problem correct in the most optimal way in the fastest time frame to pass Top Common interview mistakes:
 - not communicating with interviewer
 - jumping to conclusions / solving the wrong problem
 - doesn’t catch or can’t fix bugs
 - not discussing space / run time tradeoffs 


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The myth: I have to get every problem correct in the most optimal way in the fastest time frame to pass Top Common interview mistakes:
 - not communicating with interviewer
 - jumping to conclusions / solving the wrong problem
 - doesn’t catch or can’t fix bugs
 - not discussing space / run time tradeoffs 
 - speed - interviewer wasn’t able to get a good signal

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U M P I R E

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Understand Match Plan Implement Review Evaluate

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Understand 
 Understand what the interviewer is asking with clarifying questions and test cases

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Understand 
 Understand what the interviewer is asking with clarifying questions and test cases State any assumptions you make 
 - is the input always sorted?
 - is the input guaranteed to satisfy x & y conditions?

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Understand 
 Understand what the interviewer is asking with clarifying questions and test cases State any assumptions you make 
 - is the input always sorted?
 - is the input guaranteed to satisfy x & y conditions? Given… x input, do we expect y output?

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Match 
 Does this problem match any common patterns we’ve seen? Which data structures / techniques can we use to simplify this problem?
 - can we use hash tables for easy lookup later?
 - would using stacks / queues be helpful?
 - should we use Depth First Search or Breadth First Search?

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Plan 
 It’s easier to modify your solution before you write all the code

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Plan 
 It’s easier to modify your solution before you write all the code Catch potential bugs before starting to write code

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Plan 
 It’s easier to modify your solution before you write all the code Catch potential bugs before starting to write code Use diagrams and pseudocode to visualize how the problem will be solved

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Plan 
 It’s easier to modify your solution before you write all the code Catch potential bugs before starting to write code Use diagrams and pseudocode to visualize how the problem will be solved Run through your approach with test cases to check that it works

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Implement Code!

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Review 
 Trace through your code with an input to check for the expected output Catch possible edge cases and off-by-one errors

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Evaluate 
 Analyze the run time and space complexity of your solution Discuss tradeoffs that were made, or assumptions that were taken

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Questions?

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Next Session 
 Walk through a problem with UMPIRE approach Group exercise to try UMPIRE yourself!