• Develop code for standard and original algorithms for a particular context or specification that involves 2D arrays and determine the result of these algorithms

Assignment

Just like with arrays and ArrayLists, here is a list of things you need to be able to do with 2D arrays.

  • determine a minimum or maximum value of all the elements or for a designated row, column, or other subsection
  • compute a sum or average of all the elements or for a designated row, column, or other subsection
  • determine if at least one element has a particular property in the entire 2D array or for a designated row, column, or other subsection
  • determine if all elements of the 2D array or a designated row, column, or other subsection have a particular property
  • determine the number of elements in the 2D array or in a designated row, column, or other subsection having a particular property
  • access all consecutive pairs of elements
  • determine the presence or absence of duplicate elements in the 2D array or in a designated row, column, or other subsection
  • shift or rotate elements in a row left or right or in a column up or down
  • reverse the order of the elements in a row or column

If you’ve gotten the hang of traversal, most of these won’t be a problem as you’ve done them all before. The only other wrinkle is restricting to a specific row, column, or other subsection. This usually just requires an additional if statement to ensure you’re looking at the correct row/column combination.