fix dir structure

Author: proton

week4/priority-queues/task1/TASK.md …queues/interview-questions/task1/TASK.mdweek4/priority-queues/task1/TASK.md renamed to week4/priority-queues/interview-questions/task1/TASK.md week4/priority-queues/task1/TASK.md renamed to week4/priority-queues/interview-questions/task1/TASK.md

@@ -22,6 +22,7 @@ def solution(n)
   numbers = (1...n).map { |i| i**3 }
 
   # n^2
+  # Instead of using a hash, we could use an array to store the sums.
   h = {}
   numbers.each_with_index do |a, i|
   ((i + 1)...(n - 1)).each do |j|