Java Program for Sorting Array of Strings

Java Program to Sort Array of Strings

In java programming, this program is used to sort the array of strings and reads the string list as user inputs.

compareTo method is used in this java program to compare the strings and swap the strings between index's if compareTo method returns the positive integer value.

This java program sorts the strings in alphabetical order.

import java.util.Scanner;

public class StringSortingTest {
    
	// Sorting array of strings
    public static void stringArraySorting(String[] strList){
    	int numberOfElements = strList.length;
    	//  reduces the each inner iteration loop size by one
    	for(int i=0;i<numberOfElements-1;i++){
    		for(int j=i+1;j<numberOfElements;j++){
    			if(strList[i].compareTo(strList[j])>0){
    				String temp = strList[i];
    				strList[i] = strList[j];
    				strList[j] = temp;
    			}
    		}
    	}
    }

	public static void main(String[] args){
	    String[] strList;
	    Scanner in = new Scanner(System.in); 
	    System.out.println("String List Sorting");
	    System.out.println("--------------------");
	    System.out.println("Enter strings count: ");                   
	    int count = in.nextInt();                   
	    strList = new String[count];
	    System.out.println("Enter strings: "); 
	    // Reads array of strings
	    for (int i=0;i<count;i++){
	    	strList[i]=in.next();
	    }
	    in.close();
	    stringArraySorting(strList);
	    
	    System.out.println("Sorted Strings: "); 
	    // prints the sorted strings
	    for(String str : strList){
	    	System.out.print(str+"\t");
	    }
	}
}

D:\Java_Programs>javac StringSortingTest.java
D:\Java_Programs>java StringSortingTest 
String List Sorting
--------------------
Enter strings count: 
5
Enter strings: 
test
integration
development
issues
bug
Sorted Strings: 
bug	development	integration	issues	test

How to Sort the Array of Strings in Reverse Alphabetical Order ?

compareTo method is used in this java program to compare the strings and swap the strings between index's if compareTo method returns the negative integer value.

This java program sorts the strings in reverse alphabetical order.

import java.util.Scanner;

public class StringSortingTest {
    
	// Sorting array of strings
    public static void stringListSorting(String[] strList){
    	int numberOfElements = strList.length;
    	//  reduces the each inner iteration loop size by one
    	for(int i=0;i<numberOfElements-1;i++){
    		for(int j=i+1;j<numberOfElements;j++){
    			if(strList[i].compareTo(strList[j])<0){
    				String temp = strList[i];
    				strList[i] = strList[j];
    				strList[j] = temp;
    			}
    		}
    	}
    }

	public static void main(String[] args){
	    String[] strList;
	    Scanner in = new Scanner(System.in); 
	    System.out.println("String List Sorting");
	    System.out.println("--------------------");
	    System.out.println("Enter strings count: ");                   
	    int count = in.nextInt();                   
	    strList = new String[count];
	    System.out.println("Enter strings: "); 
	    // Reads array of strings
	    for (int i=0;i<count;i++){
	    	strList[i]=in.next();
	    }
	    in.close();
	    stringListSorting(strList);
	    
	    System.out.println("Sorted Strings: "); 
	    // prints the sorted strings
	    for(String str : strList){
	    	System.out.print(str+"\t");
	    }
	}
}

D:\Java_Programs>javac StringSortingTest.java
D:\Java_Programs>java StringSortingTest 
String List Sorting
--------------------
Enter strings count: 
5
Enter strings: 
test
integration
development
issues
bug
Sorted Strings: 
test	issues	integration	development	bug

Java Program to Sort Array of Strings using Arrays.sort method

import java.util.Arrays;
import java.util.Scanner;

public class StringSortingTest {
    
	public static void main(String[] args){
	    String[] strList;
	    Scanner in = new Scanner(System.in); 
	    System.out.println("String List Sorting");
	    System.out.println("--------------------");
	    System.out.println("Enter strings count: ");                   
	    int count = in.nextInt();                   
	    strList = new String[count];
	    System.out.println("Enter strings: "); 
	    // Reads array of strings
	    for (int i=0;i
Output:
D:\Java_Programs>javac StringSortingTest.java
D:\Java_Programs>java StringSortingTest 
String List Sorting
--------------------
Enter strings count: 
5
Enter strings: 
test
issues
coding
bug
fix
Sorted Strings: 
bug	coding	fix	issues	test	






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