Matching multiple patterns in Rust - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to match the variable against multiple values.

Rust

let x = 3;
match x {
    [1] => println!("Matched 1 or 2"),
    _ => println!("No match"),
}

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

A7 | 8

B1 | 2

C5 | 6

D3 | 4

Attempts:

3 left

💡 Hint

Common Mistakes

Using commas instead of '|' to separate values.

Forgetting to use a pattern and writing a value directly.

The pattern '1 | 2' matches if x is 1 or 2.

2fill in blank

medium

Complete the match arm to handle vowels 'a', 'e', 'i', 'o', or 'u'.

Rust

let letter = 'e';
match letter {
    [1] => println!("It's a vowel"),
    _ => println!("It's a consonant"),
}

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

A'a' | 'e' | 'i' | 'o' | 'u'

B'b' | 'c' | 'd' | 'f' | 'g'

C'm' | 'n' | 'p'

D'x' | 'y' | 'z'

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes instead of single quotes for characters.

Missing some vowels in the pattern.

The pattern matches any vowel character.

3fill in blank

hard

Fix the error in the match pattern to correctly match 10 or 20.

Rust

let num = 10;
match num {
    [1] => println!("Matched 10 or 20"),
    _ => println!("No match"),
}

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

A[10, 20]

B10, 20

C10 | 20

D(10, 20)

Attempts:

3 left

💡 Hint

Common Mistakes

Using commas to separate values in a pattern.

Using tuple or array syntax instead of pattern matching.

Use '|' to match multiple values in a pattern, not commas or brackets.

4fill in blank

hard

Fill both blanks to match digits 1-3 and letters 'a' or 'b'.

Rust

let value = 'b';
match value {
    [1] => println!("Digit 1 to 3"),
    [2] => println!("Letter a or b"),
    _ => println!("Other"),
}

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

A'1' | '2' | '3'

B'4' | '5' | '6'

C'a' | 'b'

D'c' | 'd'

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing digits and letters in the same pattern.

Using commas instead of '|'.

The first blank matches digits '1', '2', or '3'. The second blank matches letters 'a' or 'b'.

5fill in blank

hard

Fill all three blanks to match uppercase vowels, lowercase vowels, and digits 0-2.

Rust

let ch = 'A';
match ch {
    [1] => println!("Uppercase vowel"),
    [2] => println!("Lowercase vowel"),
    [3] => println!("Digit 0 to 2"),
    _ => println!("Other"),
}

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

A'A' | 'E' | 'I' | 'O' | 'U'

B'a' | 'e' | 'i' | 'o' | 'u'

C'0' | '1' | '2'

D'3' | '4' | '5'

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing uppercase and lowercase characters.

Using incorrect digits or missing some vowels.

The blanks match uppercase vowels, lowercase vowels, and digits 0 to 2 respectively.