Other
This document descrbes the notes of dsa in java
- Course
- Institution
Information provided in very depth. written by a google engineer.
[Show more]
Seller
Follow
prateeksinghsihag
Content preview
Data Structures Easy to Advanced –By a Google Engineer
In these first few notes, we will lay the foundation for core
concepts needed throughout these tutorials. Let's start with the
basics.
Data Structures
A data structure organizes data for efficient use and is essential
for creating powerful algorithms. Another reason for using data
structures is to manage and organize data naturally. To
understand the performance that data structures provide, we
need to look at the wild world of computational complexity.
The abstract data type defines how a data structure should
behave and what methods it should have. However, it does not
provide the details surrounding how those methods are
implemented. Big O notation only cares about what happens
when input becomes arbitrarily large, ignoring things like
constants and multiplicative factors. Almost any mathematical
expression containing n can be wrapped around a Big O. If the
algorithm takes logarithmic or quadratic/cubic time, then it's
represented as Big O of a log event.
Constant Time Algorithms
Both of the following algorithms run in constant time relative to
the input size because they are independent of n. As the input
size grows infinitely large, the loop still runs for the same amount
of time.
Algorithm 1
Algorithm 2
Binary Search Algorithm
A classic algorithm for binary search has a logarithmic time
complexity. This algorithm starts by creating two pointers: one at
the beginning and one at the end of the array. Then, it selects a
midpoint between the two pointers and checks if the value being
searched for is found at the midpoint. Regardless of whether the
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller prateeksinghsihag. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75759 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now