Crossword puzzle_Data Structure and Algorithm

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Across
  1. 4. _____ is a collection of elements that can be individually referenced by using an index to a unique identifier.
  2. 5. A ______ is like a line waiting to purchase tickets, where the first person in line is the first person served.
  3. 7. _______ is an approach for solving a problem by selecting the best option available at the moment.
  4. 9. _______ is the process of arranging data into a meaningful order.
  5. 10. A ______ function solves a particular problem by calling a copy of itself.
Down
  1. 1. Which data structure follows the LIFO property?
  2. 2. A ------ data structure is a hierarchical structure that is used to represent and organize data in a way that is easy to navigate and search.
  3. 3. which data structure If you need to remove or add elements to the ends of a linear sequence?
  4. 6. ______ data type used for the storage of letters in C++?
  5. 8. _______ are a collection of distinct elements.
  6. 11. Number: