Mastering Arrays in Go

How do you initialize an array of integers in Go?

• Arrays in Go cannot be initialized directly

• You can initialize an array using 'arr := make([]int, size)'

• You can initialize an array of integers in Go using 'var arr [size]int' or 'arr := [size]int{values}'.

• You must use 'new([size]int)' to create an array

What is the syntax to access the first element of an array?

• arrayName[0]

• arrayName(1)

• arrayName.first()

• arrayName{0}

How do you declare a two-dimensional array in Go?

• int arrayName[3][4];

• var arrayName [3][4]int

• var arrayName [4][3]int

• arrayName := [3][4]int{}

What is the length of an array defined as 'var arr [5]int' in Go?

• 6

• 10

• 4

• 5

How do you iterate over an array using a for loop in Go?

• foreach value in array { /* use value */ }

• for i = 0; i < length(array); i++ { /* use array[i] */ }

• for i, value := range array { /* use value */ }

• for value in array { /* use value */ }

What will be the output of 'fmt.Println(arr[2])' if arr is initialized as '[1, 2, 3, 4, 5]'?

• 2

• 3

• 4

• 5

What is the result of accessing an out-of-bounds index in an array?

• An error or undefined value, depending on the programming language.

• The program will automatically fix the index.

• It will return the last element of the array.

• The array will expand to accommodate the index.

How can you assign a value to a specific index in a two-dimensional array?

• array[rowIndex, columnIndex] = value

• array[rowIndex][columnIndex] = value

• array[rowIndex][columnIndex] := value

• array.set(value, rowIndex, columnIndex)

What is the difference between a one-dimensional and a two-dimensional array in Go?

• A one-dimensional array is a collection of arrays, while a two-dimensional array is a single array.

• A one-dimensional array is accessed by two indices, while a two-dimensional array is accessed by one index.

• A one-dimensional array can only hold integers, while a two-dimensional array can hold any data type.

• A one-dimensional array is a linear collection accessed by a single index, while a two-dimensional array is a grid accessed by two indices.

How do you initialize a two-dimensional array with specific values?

• Initialize with a dictionary, e.g., {1: [2, 3], 4: [5, 6]}

• Use a single array to initialize, e.g., [1, 2, 3, 4, 5, 6]

• Declare a one-dimensional array and assign values later, e.g., arr = new int[2][3];

• Use nested arrays to initialize a two-dimensional array, e.g., [[1, 2, 3], [4, 5, 6]].