I am new to REACT, I have to call a function resetArray which is inside my sorting class component from another file onClick of a button

This is my sorting.js file and I am trying to access the resetArray of this file from a onClick button listener of App.js. But unable to do it. Please help.

export default class sorting extends React.Component {
 constructor() {
   super();
   this.state = {
    array: [],
   };
 }

 resetArray() {
   var array = [];
   for (let i = 0; i < 80; i++) {
      array.push(this.randomNumber(10, 350));
   }
   this.setState({ array });
 }
}

This is my App.js file

import React from 'react';
import Sorting from './sorting/sorting.js';

class App extends React.Component {
  render() {
  return (
    <div>
      <Sorting />
      <button onClick={() => this.resetArray()}>
    </div>
  )
  }
}