Category: c / c++

Novice C++ programmers usually write a simple for loop if they want to count number of particular elements in the array – which could be entirely replaced by STL::count …

You have an array of logs. Each log is a space delimited string of words. For each log, the first word in each log is an alphanumeric identifier. Then, …

The Reduce in terms of Map-Reduce is often referring to reducing many values (vector) to a single value (scalar). In C++, the STL has a accumulate() method that allows …

Nowadays, you don’t have to implement your sorting algorithms e.g. quicksort, selection sort, insertion sort etc by yourself. Most programming languages provide the functions/library to do the sorting efficiently, …

Let’s say we want to implement a C++ function based on STL containers to check if a given string contains duplicate characters, or a given vector/array contains duplicate elements. …