Implementing QuickSort Algorithm in C++ to Sort People's Names Alphabetically

What is the task involving QuickSort algorithm in C++ for sorting array of pointers to structs representing people?

The task involves sorting an array of pointers to structs representing people in alphabetical order based on their names, first by last name and then by first name. The program should take data from given database text files.

Explanation:

QuickSort is a 'divide and conquer' algorithm used to efficiently sort elements in an array. In this task, QuickSort algorithm is applied to sort an array of pointers to structs representing people. The sorting is based on the names of the people in the struct, primarily sorting by last name and then by first name.

Overview of QuickSort Algorithm:

QuickSort is a comparison-based sorting algorithm that works by dividing the array into two partitions, sorting each partition individually, and then combining the sorted partitions. The main steps involved in the QuickSort algorithm are:

1. Choose a pivot element from the array.
2. Partition the array into two sub-arrays based on the pivot element.
3. Recursively apply QuickSort to the sub-arrays.
4. Combine the sorted sub-arrays to obtain the final sorted array.

In the context of sorting people's names, the QuickSort algorithm is used to sort the array of pointers to structs based on the names held in the structs.

Implementing QuickSort in C++ for Sorting People's Names:

To implement QuickSort in C++ for sorting people's names alphabetically, you need to read the struct data from the provided database text files using file I/O operations in C++. Here are the general steps to follow:

1. Read the data from the text files and store them in arrays of structs.
2. Implement the QuickSort algorithm to sort the array of pointers to these structs.
3. During the sorting process, ensure that the comparison is case-insensitive to account for variations in people's names.
4. Sort the structs primarily based on last names and then by first names.

By following these steps, you can successfully implement QuickSort in C++ to sort people's names in alphabetical order.