C language implements dictionary sorting algorithm (with complete source code)

C language implements dictionary sorting algorithm (with complete source code)

In computer science, sorting a set of elements is a very fundamental operation. One of the most classic sorting algorithms is quicksort, however, in some cases, we need to use a different sorting algorithm to process the data. One such example is when we need to put the words in a dictionary into lexicographical order.

The following will introduce the method of implementing the dictionary sorting algorithm using C language, and provide complete source code and corresponding description.

Algorithm idea

To lexicographically sort a list of words, we need to follow these steps:

1. Converts words to lowercase for case insensitivity.
2. For each word in the given list, find its position in the dictionary.
3. Move the words to the correct position, making sure no data is lost during the move.

For the second step, we can use the string comparison function strcmp() to find the word's position in the dictionary. However, using this function directly may cause some problems, such as the function not sorting correctly when different letters have different case.

To solve these problems, we can use the ASCII code table to determine their position by comparing the ASCII value of each character in the word. Also, since we need to convert all words to lowercase, we can use the library function tolower() to do so.

Code

Below is a complete C program to do lexicographical sorting. The program reads a list of words from the console and outputs them to the console after sorting.

#include <stdio.h></