Code

Question 1

Declare Array

Answer 1

int[] array1 = new int[5]; To declare size

// declare and assign values
int[] array3 = { 1, 2, 3, 4, 5, 6 };

// Longer syntax.
int[] array2 = new int[] { 1, 3, 5, 7, 9 };

Question 2

Declare a list

Answer 2

List parts = new List();

Question 3

check if value is key in dictionary

Answer 3

d.ContainsKey[value]

Question 4

Declare List

Answer 4

Dictionary numberNames = new Dictionary();

Question 5

Add key to dictionary

Answer 5

dictionary.Add(“Key”, “Value”);
dictionary.TryAdd(“Key”, “Value); //doesn’t throw exception if fails