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Vector.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Vector - The Checklist</title>
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<body>
<header>
<h1>
<a href="STL.html">The Checklist</a>
</h1>
</header>
<nav>
<!-- may use this thing later -->
<!-- <ul><li><a href="checklist1.html">Checklist 1</a></li><li><a href="checklist2.html">Checklist 2</a></li></ul> -->
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<section class="checklist">
<h2>Vector</h2>
<ul>
<li class="checklist-item">
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<label class="section-title-label"> What is mean by vector<span class="dropdown-arrow"></span>
</label>
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In C++, the Standard Template Library (STL) provides a vector container that is a dynamic array-like data
structure. It is part of the C++ Standard Library and is a very versatile and commonly used data structure
for storing and managing collections of objects. Here's how you can work with vectors in C++
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</label>
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You need to include the <vector> header to use vectors. Here's how you can do it<br>
<p>#include < Vector>
</p>
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1) Creates an empty vector of integers<br>
vector< int> myVector;
<br>
2) Creates a vector of doubles and initializes it with values<br>
vector< double> doubleVector = {1.2, 3.4, 5.6};
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<label class="section-title-label"> How to Add Elements In Vector<span class="dropdown-arrow"></span>
</label>
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You can add elements to a vector using the push_back() method:<br>
myVector.push_back(42);<Br>
myVector.push_back(15);
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You can access elements using the [] operator or the at() method:<br>
int value1 = myVector[0];<br>
int value2 = myVector.at(1);
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There are various methods to iterate through a vector by simple<br>
1)for<br>
2)while<br>
Using Simple For loop <br>
for (int i = 0; i < myVector.size(); i++) <br>
{<br>
Access elements using myVector[i]<br>
}<br>
Using For each loop<br>
for(auto it : myvector)<br>
{<br>
it<br>
}<br>
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You can get the size (number of elements) of a vector using the size() method <br>
int size = myVector.size();
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You can remove elements using the pop_back() method to remove the last element or use the erase() method to
remove elements at specific positions<br>
1) Removes the last element<br>
myVector.pop_back(); <br>
2)Removes the element at index 2 <br>
myVector.erase(myVector.begin() + 2);
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