How to Sort Characters in String in Rust - Step by Step Examples

How to Sort Characters in String in Rust ?

Answer

In Rust, you can sort characters in a string by converting the string to a mutable character array, sorting the array, and then converting it back into a string.

✐ Examples

1 Sort Characters in Ascending Order

In this example,

We create a string named str.
We convert the string to a mutable character array.
We sort the mutable character array in ascending order.
We convert the sorted mutable character array back into a string.
Finally, we print the sorted string in ascending order.

Rust Program

fn main() {
    let mut str = String::from("hello world");
    let mut chars: Vec<char> = str.chars().collect();
    chars.sort();
    str.clear();
    for c in chars {
        str.push(c);
    }
    println!("Sorted string in ascending order: {}", str);
}

Output

Sorted string in ascending order:  dehllloorw

2 Sort Characters in Descending Order

In this example,

We create a string named str.
We convert the string to a mutable character array.
We sort the mutable character array in descending order.
We convert the sorted mutable character array back into a string.
Finally, we print the sorted string in descending order.

Rust Program

fn main() {
    let mut str = String::from("hello world");
    let mut chars: Vec<char> = str.chars().collect();
    chars.sort_by(|a, b| b.cmp(a));
    str.clear();
    for c in chars {
        str.push(c);
    }
    println!("Sorted string in descending order: {}", str);
}

Output

Sorted string in descending order: wroolllhed

Summary

In this tutorial, we learned How to Sort Characters in String in Rust language with well detailed examples.

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How to Sort Characters in String in Rust - Step by Step Examples

How to Sort Characters in String in Rust ?

Answer

✐ Examples

1 Sort Characters in Ascending Order

Rust Program

Output

2 Sort Characters in Descending Order

Rust Program

Output

Summary

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