13_Program.java

/*
 Program 13 : Write a Java program to find the index of an array element.
 */

import java.io.*;

class Array{
        
        public static void main(String[] args)throws IOException{
        
                BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

                System.out.println("Enter the size of array : ");
                int size = Integer.parseInt(br.readLine());

		int[] arr = new int[size];

                System.out.println("Enter the element of array : ");
                for(int i = 0; i < size;i++){
                
                        arr[i] = Integer.parseInt(br.readLine());
                }
                
		System.out.println("Find the Index of Element : ");
                int Ele = Integer.parseInt(br.readLine());
		int Index = 0;
		for(int i = 0; i < size; i++){
			
			if(Ele == arr[i]){
				Index = i;
			}
		}
		System.out.println("Index of " + Ele + " is " + Index);
        }
}