Gfg courses -:
https://mega.nz/folder/ud5xgKaA#qgonl3ihVBgiWK-z9aSZRg
For gfg DSA -:
[Part 1 -> 3.Data Structures (Advanced)]
Or follow this link (works on pc)
https://mega.nz/folder/ud5xgKaA#qgonl3ihVBgiWK-z9aSZRg/folder/SNJwnCCI

import java.util.PriorityQueue;
public class Main
{
public static void main(String[] args) {
PriorityQueue<Integer> p=new PriorityQueue<Integer>();
p.add(1);
p.add(2);
p.add(3);
System.out.println(p.poll());
System.out.println(p.offer(4));
p.add(1);
p.remove(2);
System.out.println(p.peek());
System.out.println(p);
}
}

How to Learn Something New Every Day as a Software Developer
https://www.freecodecamp.org/news/learn-something-new-every-day-as-a-software-developer/