Write a C++ Program to Sort Elements in Lexicographical Order

In computer science, sorting is a fundamental operation that rearranges data into a specific order.

Lexicographical order is a way to sort strings based on the alphabetical order of their characters.

In this tutorial, we will discuss how to sort elements in lexicographical order using C++.

The standard C++ library provides a built-in function called sort() which can be used to sort arrays, vectors, and other data structures in lexicographical order.

The syntax for using the sort() function is as follows:

sort(start_address, end_address)

where start_address and end_address are the pointers that point to the first and last elements of the array to be sorted.

To sort an array of strings in lexicographical order, we can write the following code:

#include <iostream>
#include <algorithm>
#include <string>

using namespace std;

int main()
{
    string arr[] = {"apple", "banana", "cherry", "date"};
    int n = sizeof(arr)/sizeof(arr[0]);
    sort(arr, arr+n);
    for (int i=0; i<n; i++)
        cout << arr[i] << " ";
    return 0;
}

In this code, we first define an array of strings arr and its size n.

Then we call the sort() function to sort the array in lexicographical order. Finally, we use a for loop to print the sorted array.

The output of this program will be:

apple banana cherry date

As we can see, the elements of the array are sorted in lexicographical order.

In conclusion, sorting elements in lexicographical order is a simple task in C++ and can be achieved using the sort() function from the standard library.

By using this function, we can quickly and easily sort arrays and other data structures in lexicographical order.