Finding a certain random value in which row and how many times has been appeared

Hello there we have a semester exercise in java and i would like a help, we want a program that stores a table of 20 random integer values and then asks the user to give a value from 0 to 20 and then to show if that value is among them how many times has appeared and in which positions

import java.io.*;

import java.util.Random;

class anazitisi // research

{

public static void main(String[]args) throws IOException

{

InputStreamReader reader = new InputStreamReader(System.in);

BufferedReader Input = new BufferedReader(reader);

int[] x = new int[20];

Random rndm = new Random();

int i= rndm.nextInt();

for( i=0; i<20; i++)

x[i] = rndm.nextInt(20);

for( i=0; i<20; i++)

System.out.println("x["+i+"]="+x[i]);

System.out.println("Δώσε έναν αριθμό απο το 1 μέχρι το 20"); // give a value from 1 until 20

String AR1 = Input.readLine();

int b = Integer.parseInt(AR1);

System.out.println("O αριθμός" +x.length+ "βρέθηκε φορές στις θέσεις "); // the number....has been found x time in the positions.....

}

it's in greek but i hope you get the gist somehow any help please until 10/1 would be welcome i know it's very limited time ...Thanks in advance

Answer 1

[KALYAN ACHARJYA]

This is a Matlab forum, Matlab answer, try to replicate in other langauges-

rand_data=randi([0 20],[1, 20])
num=input('Enter any number (0 to 20): ')
times_num=sum(rand_data==num)
[r c]=find(rand_data==num)