Create an application for different operations with collections.

First screen: operations with array.

Generate an array of integers with 10_000_000 elements from 0 to 9_999_999 and display the execution time.

Operations to perform:

• insert at the beginning of an array 1000 elements (from 0 to 999 for example) one-by-one / at once;
• insert in the middle of an array 1000 elements one-by-one / at once;
• append to the end of an array 1000 elements one-by-one / at once;
• remove at the beginning 1000 elements one-by-one / at once;
• remove in the middle 1000 elements one-by-one / at once;
• remove at the end 1000 elements one-by-one / at once.

Display the execution time of each operation.

Add an activity indicator for each long-running operation.

Second screen: operations with set.

Add two text fields for user input and buttons for operations with sets.

Operations to perform:

• display all matching characters from text fields.
• display all characters that do not match in input fields.
• display all unique characters from the first text field that do not match in text fields.

Third screen: operations with a dictionary.

Generate an array with 10_000_000 elements of improvised contact structs. String name and String phone.

Generate a dictionary with 10_000_000 elements of improvised contacts. Name as a key and phone as a value.

Operations on both collections:

• find the first element (“Name0”);
• find the last element (“Name9999999”);
• search for a non-existing element;

Display the execution time of each operation.

Add an activity indicator for long-running operations.

Technology stack:

• Swift
• UIKit
• Auto Layout
• Storyboard
• Xib
• GCD
• Collections
• XCTest
• MVC