sorting in java code example

Example 1: sort array java

import java. util. Arrays;
Arrays. sort(array);

Example 2: Arrays.sort() in java

// java program to sort strings in an alphabetical order
import java.util.Arrays;
public class SortStringAlphabeticalOrder
{
   public static void main(String[] args)
   {
      String[] strAsc = {"Bear","Fox","Deer","Cheetah","Anteater","Elephant"};
      System.out.println("Before sorting: ");
      for(String string : strAsc)
      {
         System.out.println(string);
      }
      // arrays.sort
      Arrays.sort(strAsc);
      System.out.println("-----------------------------------");
      System.out.println("After sorting: ");
      for(String str : strAsc)
      {
         System.out.println(str);
      }
   }
}

Example 3: Arrays.sort() in java

// how to sort an array in java without using sort() method (ascending order)
public class WithoutSortMethod
{
   public static void main(String[] args)
   {
      int temp;
      int[] arrNumbers = {14, 8, 5, 54, 41, 10, 1, 500};
      System.out.println("Before sort: ");
      for(int num : arrNumbers)
      {
         System.out.println(num);
      }
      for(int a = 0; a < arrNumbers.length; a++)
      {
         for(int b = a + 1; b < arrNumbers.length; b++)
         {
            if(arrNumbers[a] > arrNumbers[b])
            {
               temp = arrNumbers[a];
               arrNumbers[a] = arrNumbers[b];
               arrNumbers[b] = temp;
            }
         }
      }
      System.out.println("---------------");
      System.out.println("After sort: ");
      for(int num : arrNumbers)
      {
         System.out.println(num);
      }
   }
}

Example 4: sort array java

Here’s the java program to sort an array using Arrays.sort() method.

import java.util.Arrays;
public class JavaArraySortMethod
{
   public static void main(String[] args)
   {
      String[] strGiven = {"Great Barrier Reef", "Paris", "borabora", "Florence","tokyo", "Cusco"};
      Arrays.sort(strGiven);
      System.out.println("Output(case sensitive) : " + Arrays.toString(strGiven));
   }
}

Example 5: Arrays.sort() in java

// how to sort an array in java without using sort method
public class WithoutUsingSortMethod
{
   public static void main(String[] args) 
   {
      int temp;
      int[] arrNumbers = {14, 8, 5, 54, 41, 10, 1, 500};
      System.out.println("Before sort: ");
      for(int num : arrNumbers)
      {
         System.out.println(num);
      }
      for(int a = 0; a <= arrNumbers.length - 1; a++)
      {
         for(int b = 0; b <= arrNumbers.length - 2; b++)
         {
            if(arrNumbers[b] < arrNumbers[b + 1])
            {
               temp = arrNumbers[b];
               arrNumbers[b] = arrNumbers[b + 1];
               arrNumbers[b + 1] = temp;
            }
         }
      }
      System.out.println("---------------");
      System.out.println("After sort: ");
      for(int num : arrNumbers)  
      {
         System.out.println(num);
      }
   }
}

Example 6: Arrays.sort() in java

// how to sort an array of strings in descending
import java.util.Arrays;
import java.util.Collections;
public class SortStringAlphabeticalOrder 
{
   public static void main(String[] args) 
   {
      String[] strDesc = {"Bear","Fox","Deer","Cheetah","Anteater","Elephant"};
      System.out.println("Before sorting: ");
      for(String string : strDesc)
      {
         System.out.println(string);
      }
      // arrays.sort
      Arrays.sort(strDesc, Collections.reverseOrder());   
      System.out.println("-----------------------------------");
      System.out.println("Sorting string array in descending or reverse order: ");
      for(String string : strDesc)
      {
         System.out.println(string);
      }
   }
}