Slicing operations in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a slice of integers from 1 to 5.

Go

numbers := []int[1]

Drag options to blanks, or click blank then click option'

A{1, 2, 3, 4, 5}

B[1, 2, 3, 4, 5]

C(1, 2, 3, 4, 5)

D<1, 2, 3, 4, 5>

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets [] instead of curly braces {} for slice elements.

Using parentheses () or angle brackets <> which are invalid in Go slice literals.

In Go, slices are created using curly braces {} inside the slice literal.

2fill in blank

medium

Complete the code to get a slice of the first three elements from the slice 'numbers'.

Go

firstThree := numbers[1]

Drag options to blanks, or click blank then click option'

A[1:4]

B[1:3]

C[0:3]

D[0:2]

Attempts:

3 left

💡 Hint

Common Mistakes

Starting slice at 1 which skips the first element.

Ending slice at 2 which only gets two elements.

To get the first three elements, slice from index 0 up to (but not including) index 3.

3fill in blank

hard

Fix the error in the code to get the last two elements of the slice 'numbers'.

Go

lastTwo := numbers[1]

Drag options to blanks, or click blank then click option'

A[len(numbers)-2:]

B[len(numbers):]

C[:len(numbers)-2]

D[len(numbers)-3:]

Attempts:

3 left

💡 Hint

Common Mistakes

Using len(numbers): which is invalid syntax.

Slicing from the wrong index which returns incorrect elements.

To get the last two elements, slice from len(numbers)-2 to the end.

4fill in blank

hard

Fill both blanks to create a slice of elements from index 2 up to 4 (exclusive) from 'numbers'.

Go

middle := numbers[1][2]

Drag options to blanks, or click blank then click option'

A[2:

B]

C4]

D(

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of square brackets.

Forgetting the colon between indices.

Slices use square brackets with a colon to specify the range: [start:end].

5fill in blank

hard

Fill both blanks to create a slice of the last three elements from 'numbers' using slicing syntax.

Go

lastThree := numbers[1][2]

Drag options to blanks, or click blank then click option'

A[

Blen(numbers)-3

C:]

D]

Attempts:

3 left

💡 Hint

Common Mistakes

Using closing bracket before colon.

Using incorrect start index.

The slice syntax is [start:end]. To get last three elements, start at len(numbers)-3 and go to the end.