// Reverse an array in java using for loop

// Reverse an array in java using for loop public class ReverseArrayUsingForLoop { public static void main(String[] args) { int[] arrNumbers = new int[]{2, 4, 6, 8, 10}; System.out.println("Given array: "); for(int a = 0; a < arrNumbers.length; a++) { System.out.print(arrNumbers[a] + " "); } System.out.println("Reverse array: "); // looping array in reverse order for(int a = arrNumbers.length - 1; a >= 0; a--) { System.out.print(arrNumbers[a] + " "); } } }

reverse an array in java using while loop

import java.util.Scanner;
public class Example
{
   public static void main(String args[])
   {
	int counter, i=0, j=0, temp;
	int number[] = new int[100];
	Scanner scanner = new Scanner(System.in);
	System.out.print("How many elements you want to enter: ");
	counter = scanner.nextInt();

	/* This loop stores all the elements that we enter in an 
	 * the array number. First element is at number[0], second at 
	 * number[1] and so on
	 */
	for(i=0; i<counter; i++)
	{
	    System.out.print("Enter Array Element"+(i+1)+": ");
	    number[i] = scanner.nextInt();
	}

	/* Here we are writing the logic to swap first element with
	 * last element, second last element with second element and
	 * so on. On the first iteration of while loop i is the index 
	 * of first element and j is the index of last. On the second
	 * iteration i is the index of second and j is the index of 
	 * second last.
	 */
	j = i - 1;     
	i = 0;         
	scanner.close();
	while(i<j)
	{
  	   temp = number[i];
	   number[i] = number[j];
	   number[j] = temp;
	   i++;
	   j--;
	}

	System.out.print("Reversed array: ");
	for(i=0; i<counter; i++)
	{
	   System.out.print(number[i]+ "  ");
	}       
   }
}

Posted by: Guest on January-30-2021

Source

Code answers related to "// Reverse an array in java using for loop"

Code answers related to "Java"

Browse Popular Code Answers by Language

Answers for "// Reverse an array in java using for loop"

Code answers related to "// Reverse an array in java using for loop"

Code answers related to "Java"

Java Answers by Framework

Browse Popular Code Answers by Language

Popular Programming Languages

Advertisements

Company

Compilers

Help

Connect with us