Application running various operations on Collections and Maps, calculate and display the average execution time of these operations (time in milliseconds).

Technology stack:

• Language - Java
• Architecture pattern - MVVM
• View Binding
• RxJava2 + RxAndroid
• Dagger2
• JUnit 4
• Espresso
• Mockito

Functionality:

3 Collections: ArrayList, LinkedList, CopyOnWriteArrayList.

• Input: number of elements to compare.

• Output: grid with [3 collections x 7 operations = 21 cells]. Operations to perform:

  • adding in the beginning;

  • adding in the middle;

  • adding in the end;

  • search by value;

  • removing in the beginning;

  • removing in the middle;

  • removing in the end.

2 Maps: TreeMap, HashMap.

• Input: number of elements to compare.

• Output: grid with 2 maps x 3 operations = 6 cells. Operations to perform:

  • adding new;

  • search by key;

  • removing.

• Each cell of the table have a text field to display the result and progress bar. While calculation is in progress, the progressBar be shown in the table cell.

• After the operation is completed, the result(average time of execution) shown in the appropriate cell.

• The entire table is asynchronous, each operation is performed on a separate thread.