In this tutorial you will learn about the Java Program to print the duplicate elements of an array and its application with practical example.
Java Program to print the duplicate elements of an array
In this tutorial, we will learn to create a Java program that will print the duplicate elements of an array using Java programming.
Prerequisites
Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:
- Operators in Java Programming.
- Basic Input and Output function in Java Programming.
- Basic Java programming.
- For loop in Java programming.
- Arithmetic operations in Java Programming.
What is an array?
An array in a programming language is a collection of a similar set of entities. It means one variable can store multiple values in memory with different indices.
Algorithm:-
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Step 1 :- Initialization of the program. Step 2 :- Taking the input size of the array. Step 3 :- Taking the elements of the array from the user for the program. Step 4 :- Checking the duplicate elements of the array. Step 5 :- Printing the duplicate elements of the array. Step 6 :- Ending the execution of the program. |
Printing the duplicate Elements in an Array.
In this program, First, we will first take the size of the array from the user. Then we will take the elements of the array from the user. After that, we will use the conditional statements and the loops to check the duplicate elements of the array. Then we will be using a for loop to print the duplicate elements of the array.
With the help of this program, we can be print the duplicate elements of the array.
Program Code:-
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import java.util.Scanner; public class DupArray { private static Scanner sc; //Body of the main function of the program. public static void main(String[] args) { //Declaring the required variables for the prorgam. int no, i, j, flag = 0; sc = new Scanner(System.in); //Taking the size of the array. System.out.print("\nPlease Enter the Array size : "); no = sc.nextInt(); int[] flag_arr = new int[no]; //Taking the elements of the array. System.out.format("\nEnter Duplicate Array %d elements : ", no); for(i = 0; i < no; i++) { flag_arr[i] = sc.nextInt(); } //Finding the duplicate elements of the array. for(i = 0; i < no; i++) { for(j = i + 1; j < no; j++) { if(flag_arr[i] == flag_arr[j]) { flag++; break; } } } //Printing the duplication of the array elements. System.out.println("\nThe Total Number of Duplicates = " + flag); } } |
Output:-
In the above program, we have first initialized the required variable.
- no = it will hold the integer value.
- i = it will hold the integer value.
- j = it will hold the integer value.
- flag = it will hold the integer value.
Taking the size of the array and the elements.
Finding the duplicate elements of the array.
Printing output duplicate elements of the array.
