how to do redirect and standardize URL in the same htaccess file

Hi, I am very new to htaccess and need a solution to my problem ASAP. I need to create a htaccess file that does two things for me;

1. it needs to redirect from http to https protocol.
2. it also needs to standardize the URL web address so it always includes 'www' in the URL.

I found some solutions (listed below) that solve each of these situations, but I need one htaccess file that does both and that is where I am having problem. The solutions I've found are as follow:

// Redirecting from http to https protocol

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
// standaridise URL so it alwaysinlcude 'www'

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]
// ---------------------------------------------------------------------

Again how do I write one htaccess file that covers both situations?

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Just put both rewrites to same .htaccess file

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule .* https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L] # L means stop rewriting

RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

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