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 »
In this tutorial you will learn about stl unordered map container i.e. std::unordered_map and all functions applicable on it. By its name we can say that it comes under Associative containers with Unordered property. We know that any unordered container internally implemented with hash tables. So same has hashing concept in worst case any operation …
In this tutorial you will learn about stl unordered set container in c++ and various functions applicable on it. Unordered Set comes under unordered containers. As we discussed in introduction to stl article, unordered containers internally implemented with hash tables. Each item calculated by hash function, to map to hash table. The main advantage is …
In this tutorial you will learn about stl multimap i.e., std::multimap and all functions applicable on it with some example code. In previous articles we already learned about std::map container. It is an associative container which give priority to key values. But problem with map is it won’t allow duplicate values. But multimap allows duplicate …
