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Java Program to Sort Elements in Lexicographical Order (Dictionary Order)
In this article, we will understand how to sort the elements of an array in Lexicographical order in Java. The lexicographical order is a generalization of the alphabetical order of the dictionaries to sequences.
Below is a demonstration of the same −
Input
Suppose our input is −
Aplha Beta Gamma Delta
Output
The desired output would be −
Aplha Beta Delta Gamma
Algorithm
Step1- Start Step 2- Declare three integers: I, j, array_length Step 3- Declare a string array Step 4- Prompt the user to enter the array_length value/ define the array_length Step 5- Prompt the user to enter the words of the string array/ define the string array Step 4- Read the values Step 5- Run a for-loop, using the swap method, arrange the words using the compareTo function. Store the values. Step 6- Display the result Step 7- Stop
Example 1
public class Main { public static void main(String[] args) { String[] my_input = { "Aplha", "Beta", "Gamma", "Delta" }; ; int i, j, array_length; array_length = 4; System.out.println("The array of string is defined as "); for(i = 0; i < array_length; i++) { System.out.println(my_input[i]); } for(i = 0; i < array_length - 1; ++i) { for (j = i + 1; j < array_length; ++j) { if (my_input[i].compareTo(my_input[j]) > 0) { String temp = my_input[i]; my_input[i] = my_input[j]; my_input[j] = temp; } } } System.out.println("The words in lexicographical order is:"); for(i = 0; i < 4; i++) { System.out.println(my_input[i]); } } }
Output
The array of string is defined as Aplha Beta Gamma Delta The words in lexicographical order is: Aplha Beta Delta Gamma
Example 2
import java.io.*; public class LexicographicalOrder { public static void sortData(String my_array[]){ for (int i = 0; i < my_array.length; i++) { for (int j = i + 1; j < my_array.length; j++) { if (my_array[i].compareToIgnoreCase(my_array[j])< 0) { String my_temp = my_array[i]; my_array[i] = my_array[j]; my_array[j] = my_temp; } } } } public static void printData(String my_array[]){ for (String my_string : my_array) System.out.print(my_string + " "); System.out.println(); } public static void main(String[] args){ String my_array[] = { "Aplha", "Beta", "Gamma", "Delta" }; System.out.println("Required packages have been imported"); System.out.println("The Lexicographical Order data is"); sortData(my_array); printData(my_array); } }
Output
Required packages have been imported The Lexicographical Order data is Aplha Beta Delta Gamma
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