Ruby Array : sort, reverse and unique

By - 
numbers = [1, 4, 6, 7, 3, 2, 5]
=> [1, 4, 6, 7, 3, 2, 5]

Sort

numbers.sort
=> [1, 2, 3, 4, 5, 6, 7]


numbers = [1, 4, 6, 7, 3, 2, 5]
=> [1, 4, 6, 7, 3, 2, 5]

numbers.sort!
=> [1, 2, 3, 4, 5, 6, 7]

Reverse

numbers.reverse
=> [7, 6, 5, 4, 3, 2, 1]

Unique

numbers = [1, 4, 6, 7, 3, 2, 5, 1, 2]
=> [1, 4, 6, 7, 3, 2, 5, 1, 2]

numbers.uniq
=> [1, 2, 3, 4, 5, 6, 7]

numbers = [1, 4, 6, 7, 3, 2, 5]
=> [1, 4, 6, 7, 3, 2, 5]

numbers.uniq!
=> [1, 2, 3, 4, 5, 6, 7]

Note : Using Exclamation mark to make changes in original array

Comments

Post a Comment

Popular posts from this blog

Overview of Natural Language Processing (NLP)

By -
The study of the interaction between computers and human (natural) languages is known as natural language processing (NLP), and it is a subfield of computer science, artificial intelligence, and linguistics. Speech recognition systems, automatic translation tools, and virtual assistants are just a few examples of the applications that can grasp, interpret, and synthesise human language thanks to the employment of NLP technologies. Human language is ambiguous and context-dependent, which makes it challenging for computers to effectively interpret and understand. This is one of the main issues of NLP. NLP algorithms and models use methods like statistical analysis, machine learning, and deep learning to analyse and comprehend the structure and meaning of natural language in order to get around this problem. Language translation is one of the main uses of NLP, enabling people to communicate with one another in many languages. Text can be automatically translated from one language to anoth...
Read more

Inserting and Moving elements inside Ruby Array

By -
Here's is an array with 5 elements 2.1.2 :001 > arr = ["a", "b", "c", "d", "e"] => ["a", "b", "c", "d", "e"] Lets look at few different cases Insert a new element at starting position Using unshift 2.1.2 :002 > arr.unshift("f") => ["f", "a", "b", "c", "d", "e"] Using insert 2.1.2 :005 > arr.insert(0, "f") => ["f", "a", "b", "c", "d", "e"] In the above example 0 is the position(index) Move existing element from one position to another The element in this case is "e" Using uniq to show only unique elements 2.1.2 :009 > arr.insert(0, "e").uniq => ["e", "a", "b", "c", "d"] With uniq we are only showing unique records but the element is listed ...
Read more

Basic XML Questions and Answers

By -
1. What is XML? Answer: XML stands for Extensible Markup Language and is a markup language used to store and transport data. 2. What are the advantages of XML? Answer: XML has numerous advantages, such as being platform-independent, self-descriptive, and extensible. 3. What is an XML element? Answer: An XML element is a logical unit of XML that consists of a start tag, an end tag, and content in between. 4. What is an XML attribute? Answer: An XML attribute is a name/value pair that is associated with an element and provides additional information about the element. 5. What is an XML document? Answer: An XML document is a file that contains XML code and is used to store  and transport data. 6. What is the difference between XML and HTML? Answer: XML and HTML are both markup languages, but XML is used to store and transport data, while HTML is used to display data. 7. What is the purpose of namespaces in XML? Answer: Namespaces are used in XML to provide a method of differentiating ...
Read more