C# Arrays Quest

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Medium array basics

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Paсo Pacev

Bulgaria

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Froggy Jumps C# Arrays QuestOnline version Medium array basics by Paсo Pacev 1 Which keyword is used to declare a one-dimensional array of int in C#? a Numbers[] int; b int[] numbers; c array int numbers; 2 What does the Length property of an array return? a Memory size in bytes b Total number of dimensions c Total number of elements in the array 3 Which statement correctly creates an int array with 5 elements? a new int[5] a; b int a[5]; c int[] a = new int[5]; 4 How do you access the first element of an array named data? a data[0] b data{0} c data(0) 5 Which is a jagged array declaration? a int[,] jag = new int[3,3]; b int[] jag[3]; c int[][] jag = new int[3][]; 6 Which method can resize an existing array in C#? a Array.Resize(ref arr, newSize); b arr.Resize(newSize); c Array.Scale(arr, newSize); 7 What does foreach do with arrays? a Allocates memory for the array b Iterates over each element c Resizes the array automatically 8 Which loop is commonly used to process all elements of an array? a while (arr) { } b foreach (var x in arr) { } c for (i = 0; i < arr.Length; i++) { } 9 How to copy elements from one array to another? a Array.Clone(source); b dest = source; c Array.Copy(source, dest, length); 10 Which statement creates a multidimensional array (3x4) of int? a int[,] grid = new int[3,4]; b int[][] grid = new int[3,4]; c new int[3,4] grid;

Froggy Jumps

C# Arrays QuestOnline version

Medium array basics

by Paсo Pacev

Which keyword is used to declare a one-dimensional array of int in C#?

Numbers[] int;

int[] numbers;

array int numbers;

What does the Length property of an array return?

Memory size in bytes

Total number of dimensions

Total number of elements in the array

Which statement correctly creates an int array with 5 elements?

new int[5] a;

int a[5];

int[] a = new int[5];

How do you access the first element of an array named data?

data[0]

data{0}

data(0)

Which is a jagged array declaration?

int[,] jag = new int[3,3];

int[] jag[3];

int[][] jag = new int[3][];

Which method can resize an existing array in C#?

Array.Resize(ref arr, newSize);

arr.Resize(newSize);

Array.Scale(arr, newSize);

What does foreach do with arrays?

Allocates memory for the array

Iterates over each element

Resizes the array automatically

Which loop is commonly used to process all elements of an array?

while (arr) { }

foreach (var x in arr) { }

for (i = 0; i < arr.Length; i++) { }

How to copy elements from one array to another?

Array.Clone(source);

dest = source;

Array.Copy(source, dest, length);

Which statement creates a multidimensional array (3x4) of int?

int[,] grid = new int[3,4];

int[][] grid = new int[3,4];

new int[3,4] grid;

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C# Arrays Quest

Froggy Jumps

About this activity

Created by

Download the paper version to play

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C# Arrays QuestOnline version

by Paсo Pacev

Which keyword is used to declare a one-dimensional array of int in C#?

What does the Length property of an array return?

Which statement correctly creates an int array with 5 elements?

How do you access the first element of an array named data?

Which is a jagged array declaration?

Which method can resize an existing array in C#?

What does foreach do with arrays?

Which loop is commonly used to process all elements of an array?

How to copy elements from one array to another?

Which statement creates a multidimensional array (3x4) of int?

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