How important is it to know algorithms in Java and what algorithms are needed?

Question

Java

This topic is quite controversial, but I'm interested in Java and I want to know how much it is necessary to know the algorithms and, if necessary, what advantages the algorithms bring.

Answer 1

At least basic data structures and algorithms need to be known for any PL:
Data structures:

• array
  
• ArrayList
  
• hashmap
  
• HashSet
  
• Trees (at least normal)
  
• Stack
  
• Queue
  

Algorithms:

• Linear search
  
• Binary search
  
• Sorting (It is desirable to know a couple of algorithms)
  

It will be very difficult to live without it.