Rust Program: Convert strings to Uppercase

Last update on December 21 2024 10:20:04 (UTC/GMT +8 hours)

Write a Rust program that iterates over a vector of strings and converts each string to uppercase.

Sample Solution:

Rust Code:

fn main() {
    let strings = vec!["rust".to_string(), "exercises".to_string()]; // Define a vector of strings
    println!("Original strings: {:?}", strings); // Print the original vector of strings

    let uppercased_strings: Vec<String> = strings // Iterate over each string in the vector
        .into_iter() // Convert the vector into an iterator
        .map(|s| s.to_uppercase()) // Apply the to_uppercase method to each string to convert it to uppercase
        .collect(); // Collect the modified strings into a new vector

    println!("Uppercased strings: {:?}", uppercased_strings); // Print the vector of strings converted to uppercase
}

Output:

Original strings: ["rust", "exercises"]
Uppercased strings: ["RUST", "EXERCISES"]

Explanation:

The above Rust program iterates over a vector of strings, converts each string to uppercase using the "to_uppercase()" method, and collects the modified strings into a new vector. It then prints both the original vector of strings and the vector of strings converted to uppercase.

Rust Code Editor:

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