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import java.util.Scanner;
import java.util.InputMismatchException;
class Number {
private double value;
Number(double n) {
value = n;
}
double valueOf() {
return value;
}
@Override
public boolean equals(Object o) {
if (o instanceof Number) {
return value == ((Number)o).valueOf();
}
return false;
}
}
class NumberArray {
Number[] array;
NumberArray(double arr[]) {
array = new Number[arr.length];
for (int i = 0; i < arr.length; i++) {
array[i] = new Number(arr[i]);
}
}
int find(Number n) {
for (int i = 0; i < array.length; i++) {
if (array[i].equals(n)) {
return i;
}
}
return -1;
}
void display() {
System.out.print("An array of numbers with " + array.length + " elements:");
for (int i = 0; i < array.length; i++) {
System.out.print(" " + array[i].valueOf());
}
System.out.println();
}
}
class FindNumberInArray {
public static void main(String args[]) {
try {
var sc = new Scanner(System.in);
System.out.print("Enter length: ");
var length = sc.nextInt();
var arr = new double[length];
System.out.print("Enter array elements: ");
for (int i = 0; i < length; i++) {
arr[i] = sc.nextDouble();
}
var narr = new NumberArray(arr);
System.out.print("Given: ");
narr.display();
System.out.print("Enter element to find in array: ");
var num = new Number(sc.nextDouble());
var pos = narr.find(num);
if (pos == -1) {
System.out.println("Could not find the number " + num.valueOf() + " in the array.");
return;
}
System.out.println("The number " + num.valueOf() + " was found in the array at position " + (pos + 1) + ".");
} catch (InputMismatchException e) {
System.err.println("Invalid number given as input");
}
}
}
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