Given an array arr in Java, the task is to print the contents of this array without using any loop. First let’s see the loop method.
Loop method: The first thing that comes to mind is to write a for loop from i = 0 to n, and print each element by arr[i].
Pseudo Code:
for(int i = 0; i < Array.length; i++)
System.out.println(Array[i]);
Concept: We will be using the toString() method of the Arrays class in the util package of Java. This method helps us to get the String representation of the array. This string can be easily printed with the help of the print() or println() method.
Example 1: This example demonstrates how to get the String representation of an array and print this String representation.
Java
// Java program to get the String // representation of an array and print it import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { // Get the array int arr[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; // Get the String representation of array String stringArr = Arrays.toString(arr); // print the String representation System.out.println("Array: " + stringArr); } } |
Output:
Array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
Example 2: This array can also be printed directly without creating a string.
Java
// Java program to print an array // without creating its String representation import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { // Get the array int arr[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; // Print the array System.out.println("Array: " + Arrays.toString(arr)); } } |
Output:
Array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
[…] Rearrange the first array element as an even number and check if the remaining array elements can be rearranged into odd-even alternately or not. If found to be true, then rearrange the array elements into odd-even alternately and print the array elements. […]