Code9 Java code to Count Occurrences of Integers from Array (01/02/2025) #javacodinginterview #java

HashSet in Java – Used to track counted elements and avoid duplicate counting.
Nested Loops for Comparison – Used to count occurrences of each element in the array.
Conditional Statements (if check) – To verify if an element has already been counted.
Marking Elements as Processed (arr[j] = -1) – Helps avoid recounting duplicates.
Array Traversal – Iterating through the array to check occurrences.