Vector comes under STL. It can be termed as a dynamic array i.e, we can add or remove elements in vectors even in runtime. This flexibility with values is not possible in the arrays. Vectors aren’t ordered in increasing or decreasing order, although they can be easily accessed by iterators. There are different ways through …
In this tutorial, we will discuss various methods to append vector to vector in C++. Using insert Function We use the insert() function to add multiple elements in a vector. It is a built-in function. There are 3 arguments that need to be passed in the insert function the first argument determines where another vector …
It is a vector consisting of vectors. As the name suggests it is 2-Dimensional in nature and can help you solve problems. In this tutorial, you will learn how to work with 2d vectors in C++. How to Take Input in 2D Vector? #include <iostream> #include <vector> using namespace std; int main() { vector<vector<int>> allvect; …
Hello everyone, In this article, we will see different ways by which we can check if a particular key exists in a map or not. Let’s first go through what a map is: C++ map stores information in <key, value> pairs and we can access the value field from the key in O(logn) time. Now …
Hello everyone, In this article we will see how string trimming can be done in C++. Let us first understand what is trimming and where it can be of importance. Trim: Trimming is a string operation where we remove extra whitespaces from the start and end of a string and if some spaces are present …
In this tutorial we will learn about stl unordered multimap container in C++. Unordered multimap is an associative container. Same as unordered map it stores key and value pair. But unordered map doesn’t allow duplicate values. Here duplicate values are allowed. Since these are unordered containers, there is no order in the way of storing …
C++ STL Unordered Multimap – std::unordered_multimap Read More »
In this article you will learn about stl algorithm library in c++. Are you a competitive programmer or very passionate programmer then you must know about STL algorithm library. It contains very rich set of algorithms. If you practice this well you can nail any programming interview. All inbuilt algorithms implemented in this library were implemented …
In this tutorial you will learn about STL Unordered Multiset container in c++ and all functions applicable on it. As name says that, this is an unordered container. Set, unordered_set, multiset has some restrictions to store the elements. But here in unordered_multiset, the features are: 1) Elements need not follow specific order. They follow any …
C++ STL Unordered Multiset – std::unordered_multiset Read More »
