Convert String to sObject using Apex in Salesforce

Code Format:

//Setting String str as Contact

String str = 'Contact';

//Casting String to sObject

sObject objc = Schema.getGlobalDescribe().get(str).newSObject();
objc.put('LastName', 'Test');
objc.put('AssistantName', 'Testing');

objc.put('Department', 'Testing');

system.debug('objc is ' + objc);

Output: