Time complexities

Linear search.     O(n)
Binary search.     O(logn)
Bubble sort           O(n^2)
Selection sort        O(n^2)
Insertion sort        O(n^2)
Merge sort              O(nlog n)
Quick sort               O(n^2)
Heap sort                 O(nlog n)
Bucket sort              O(n^2)
Radix sort                O(nk)
Tim sort                  O(nlog n)
She'll sort.               O((nlog n))*2)

Data structure

In computer science, a data structure is a data organization, management, and storage format that enables efficient access and modification. More precisely, a data structure is a collection of data values, the relationships among them, and the functions or operations that can be applied to the data.

Pubg

PlayerUnknown's Battlegrounds is an online multiplayer battle royale game developed and published by PUBG Corporation, a subsidiary of South Korean video game company Bluehole.

How to use Retrofit

Retrofit is an awesome type-safe HTTP client for Android and Java built by awesome folks at Square. Retrofit makes it easy to consume JSON or XML data which is parsed into Plain Old Java Objects (POJOs).

If you just want to get the sample project, then you can find it here.

So, without any further delays, lets get started by first creating a new project in Android Studio.

1. Go to File ⇒ New Project. When it prompts you to select the default activity, select Empty Activity and proceed.
2. Open build.gradle in (Module:app) and add Retrofit, Picasso, RecyclerView, Gson dependencies like this.

Grocery

The produce section in a supermarket

Packaged food aisles in a hypermarket.

A grocery store in a village in Oman

A grocery store or grocer's shop is a retail shop that primarily sells food, either fresh or preserved. Large grocery stores stock

"Grocer" and "Purveyor" redirect here. For the magazine, see The Grocer. For the legal concept, see purveyance.

For a large-scale grocery store, see Supermarket. For a fruit and vegetable grocery store, see Greengrocer.

A grocery store or grocer's shop is a retail shop that primarily sells food, either fresh or preserved. Large grocery stores stock significant amounts of non-food products, such as clothing and household items, blurring the line between grocery stores and supermarkets.

In Canada, the United Kingdom, and the United States, supermarkets and convenience shops are sometimes described as grocery businesses, groceries or simply grocers.^{[note 1]} Small grocery stores that mainly sell fruits and vegetables are known as greengrocers (Britain) or produce markets (U.S.), and small grocery stores that predominantly sell prepared food, such as candy and snacks, are known as convenience shops or delicatessens.

Some groceries specialize in the foods of a certain nationality or culture, such as Chinese, Italian, Middle-Eastern, or Polish. These stores are known as ethnic markets and may also serve as gathering places for immigrants.^[1]