Magento 2: Reset customer password programatically

There are 2 ways to reset customer password programmatically in Magento2:

1) By creating a php file on root directory of project:

Create a new php file on root directory of your project and place the following code in that file:
and change these two varaibles in this code:
$passwordhash for new password
$email for customer email

use Magento\Framework\App\Bootstrap;
require 'app/bootstrap.php';
$params = $_SERVER;
$bootstrap = Bootstrap::create(BP, $params);
$objectManager = $bootstrap->getObjectManager();

class MyEncryptor extends \Magento\Framework\App\Http implements \Magento\Framework\AppInterface
{
    private $encryptor;
    public function __construct(
        \Magento\Framework\App\State $state,
        \Magento\Framework\Encryption\EncryptorInterface $encryptor,
        \Magento\Framework\App\Response\Http $response
    ) {
        $this->_response = $response;
        $this->encryptor = $encryptor;
        $state->setAreaCode('adminhtml');
    }  
    function launch()
    {
        $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
        $email = "abc@yopmail.com";
        $passwordhash=  $this->encryptor->hash("enter_password_here") . PHP_EOL;
        $newpass = trim($passwordhash);
        $resource = $objectManager->get('Magento\Framework\App\ResourceConnection');
        $connection = $resource->getConnection();
        $tableName = $resource->getTableName('customer_entity');
        $sql = 'Update ' . $tableName . ' Set password_hash = "'.$newpass.'" where email = "'.$email.'"';
        $connection->query($sql);
        return $this->_response;

    }
}

$bootstrap = \Magento\Framework\App\Bootstrap::create(BP, $_SERVER);
$app = $bootstrap->createApplication('MyEncryptor');
$bootstrap->run($app);

1) By executing the following mysql query on your mysql server:

Note: before executing this query please change these 2 variables with customer password and customer entity id.

`UPDATE `customer_entity`

SET `password_hash` = CONCAT(SHA2('xxxxxxxxWRITE_YOUR_PASSWORD_HERE', 256), ':xxxxxxxx:1') WHERE `entity_id` = WRITE_CUSTOMER_ENTITY_ID_HERE;