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import java.util.Scanner;

public class Program35 {

// arrays program (3) [ taking an array as input from user search for given number x and point the index at which it occurs. ]

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

int size = sc.nextInt();

int numbers[] = new int[size];//array declared without initialization

for (int i = 0; i < size; i++) {

numbers[i] = sc.nextInt();//taking input from user

}

int x = sc.nextInt();

for (int i = 0; i < numbers.length; i++) {

if (numbers[i] == x) {

System.out.println("The number " + x + " is found at index " + i);

break;

}

}

}

}