Practice 50 Pattern Matching Coding Questions, TechnoVlogs

Practice 50 Pattern Matching Coding Questions


Q1. Write a Rust program to match an integer and print whether it is positive, negative, or zero.  
Input:  
x = 5  
Expected Output:  
Positive

Q2. Write a Rust program to match a tuple (x, y) and print the values of x and y.  
Input:  
(x, y) = (1, 2)  
Expected Output:  
x: 1, y: 2

Q3. Write a Rust program to match an enum variant and print a message.  
Input:  
enum Message { Quit, Move, Write }  
Message::Move  
Expected Output:  
Move

Q4. Write a Rust program to use pattern matching to check if a number is in the range of 1 to 10.  
Input:  
x = 7  
Expected Output:  
In range

Q5. Write a Rust program to match a string and print the corresponding day of the week.  
Input:  
day = "Monday"  
Expected Output:  
Today is Monday

Q6. Write a Rust program to match a number and print whether it is even or odd.  
Input:  
x = 3  
Expected Output:  
Odd

Q7. Write a Rust program to match a number with multiple ranges and print the corresponding message.  
Input:  
x = 50  
Expected Output:  
50-100

Q8. Write a Rust program to match an option and print the value if it is Some, or a default message if it is None.  
Input:  
option = Some(5)  
Expected Output:  
Value: 5

Q9. Write a Rust program to match on a tuple with three elements and print each element.  
Input:  
(1, 2, 3)  
Expected Output:  
1, 2, 3

Q10. Write a Rust program to match a vector and print whether it is empty or contains elements.  
Input:  
vec = vec![1, 2, 3]  
Expected Output:  
Not empty

Q11. Write a Rust program to match a result and handle Ok and Err values.  
Input:  
result = Ok(10)  
Expected Output:  
Success: 10

Q12. Write a Rust program to match a range and check if a number falls within a specific range.  
Input:  
x = 25  
Expected Output:  
In range 1-30

Q13. Write a Rust program to match an enum with multiple variants and execute different actions based on the variant.  
Input:  
enum Direction { Up, Down, Left, Right }  
Direction::Left  
Expected Output:  
Move Left

Q14. Write a Rust program to use pattern matching to extract values from a tuple.  
Input:  
(x, y) = (10, 20)  
Expected Output:  
x: 10, y: 20

Q15. Write a Rust program to match an Option and return a default value if it is None.  
Input:  
option = None  
Expected Output:  
Default Value

Q16. Write a Rust program to match a string and return different messages for different strings.  
Input:  
status = "success"  
Expected Output:  
Operation was successful

Q17. Write a Rust program to use pattern matching to check if an integer is positive, negative, or zero.  
Input:  
x = -5  
Expected Output:  
Negative

Q18. Write a Rust program to match a Result type and handle errors gracefully.  
Input:  
result = Err("An error occurred")  
Expected Output:  
Error: An error occurred

Q19. Write a Rust program to match an enum with data inside the variant and print it.  
Input:  
enum Color { Red, Green, Blue(u8) }  
Color::Blue(255)  
Expected Output:  
Blue with value 255

Q20. Write a Rust program to match a range of numbers and print whether the number is in the range.  
Input:  
x = 3  
Expected Output:  
In range 1-5

Q21. Write a Rust program to match on a tuple of two values and return the sum.  
Input:  
(3, 4)  
Expected Output:  
7

Q22. Write a Rust program to match a vector with different patterns.  
Input:  
vec = vec![1, 2, 3]  
Expected Output:  
Vec contains elements

Q23. Write a Rust program to match a number with multiple ranges and print the appropriate message.  
Input:  
x = 15  
Expected Output:  
15-20

Q24. Write a Rust program to match on a tuple and check the first value.  
Input:  
(1, "hello")  
Expected Output:  
First value is 1

Q25. Write a Rust program to match a struct with named fields and print its values.  
Input:  
struct Point { x: i32, y: i32 }  
Point { x: 3, y: 4 }  
Expected Output:  
Point: x = 3, y = 4

Q26. Write a Rust program to match a result and unwrap the value if it is Ok, or handle the error.  
Input:  
result = Ok(100)  
Expected Output:  
Unwrapped value: 100

Q27. Write a Rust program to match a None value in an Option and handle it appropriately.  
Input:  
option = None  
Expected Output:  
No value present

Q28. Write a Rust program to match a vector and check if it contains at least one element.  
Input:  
vec = vec![1]  
Expected Output:  
Has at least one element

Q29. Write a Rust program to match a tuple with three elements and return the middle element.  
Input:  
(1, 2, 3)  
Expected Output:  
2

Q30. Write a Rust program to match an enum and return a message for each variant.  
Input:  
enum Status { Active, Inactive, Suspended }  
Status::Suspended  
Expected Output:  
Account Suspended

Q31. Write a Rust program to match a string and return an appropriate message for different day names.  
Input:  
day = "Friday"  
Expected Output:  
It's Friday, time to relax!

Q32. Write a Rust program to match a tuple of two integers and return their product.  
Input:  
(3, 4)  
Expected Output:  
12

Q33. Write a Rust program to match a Some value and print it, otherwise print a default message.  
Input:  
option = Some(10)  
Expected Output:  
Value: 10

Q34. Write a Rust program to match an enum with a numeric value inside it and print the value.  
Input:  
enum Status { Success(i32), Failure(i32) }  
Status::Success(200)  
Expected Output:  
Success with code 200

Q35. Write a Rust program to match a vector and print the first element if it exists.  
Input:  
vec = vec![5, 6, 7]  
Expected Output:  
First element is 5

Q36. Write a Rust program to match an integer and print a specific message for each value.  
Input:  
x = 5  
Expected Output:  
Five

Q37. Write a Rust program to match a number and print a message for each different case.  
Input:  
x = 0  
Expected Output:  
Zero

Q38. Write a Rust program to match a range of numbers and check if a number is within the range.  
Input:  
x = 8  
Expected Output:  
Within range 1-10

Q39. Write a Rust program to match a tuple with two elements and check if the first element is positive.  
Input:  
(10, -5)  
Expected Output:  
First element is positive

Q40. Write a Rust program to match an enum with data inside and handle different types.  
Input:  
enum MyEnum { A(i32), B(f64) }  
MyEnum::B(3.14)  
Expected Output:  
Variant B with value 3.14

Q41. Write a Rust program to match a result and print whether it is successful or an error.  
Input:  
result = Err("Failure")  
Expected Output:  
Error: Failure

Q42. Write a Rust program to match a tuple with two elements and return the larger value.  
Input:  
(10, 20)  
Expected Output:  
20

Q43. Write a Rust program to match a string and print the first letter.  
Input:  
name = "Alice"  
Expected Output:  
A

Q44. Write a Rust program to match an integer and check if it is a multiple of 5.  
Input:  
x = 10  
Expected Output:  
Multiple of 5

Q45. Write a Rust program to match a string and check if it contains a specific substring.  
Input:  
name = "Rust Programming"  
Expected Output:  
Contains Rust

Q46. Write a Rust program to match a vector of numbers and return the sum of all the elements.  
Input:  
vec = vec![1, 2, 3]  
Expected Output:  
6

Q47. Write a Rust program to match a tuple with two elements and check if the sum is greater than 10.  
Input:  
(6, 5)  
Expected Output:  
Greater than 10

Q48. Write a Rust program to match a result and return the value if successful, or a default value if failed.  
Input:  
result = Ok(10)  
Expected Output:  
Value: 10

Q49. Write a Rust program to match a tuple and return a message based on the sum of its elements.  
Input:  
(5, 6)  
Expected Output:  
Sum is 11

Q50. Write a Rust program to match a vector and return a message if it contains exactly three elements.  
Input:  
vec = vec![1, 2, 3]  
Expected Output:  
Exactly three elements

Share on Social Media