Rust Tutorials

How to Sort a String Array in Dictionary Order in Rust

How to Sort a String Array in Dictionary Order in Rust ?

Answer

To sort a string array in Rust in dictionary order, you can use the `sort()` method from the `std::slice::SliceExt` trait. To sort in descending order, you can use a custom compare function or reverse the array after sorting.

✐ Examples

1 Sort String Array Ascending

In this example,

We create a mutable string slice `mut words` with unsorted elements.
We use the `sort()` method with the string slice for ascending order.
We print the sorted array.

Rust Program

fn main() {
    let mut words = ["banana", "apple", "orange", "grape"];
    words.sort();
    println!("Sorted Array Ascending:");
    for word in &words {
        println!("{}", word);
    }
}

Output

Sorted Array Ascending:
apple
banana
grape
orange

2 Sort String Array Descending

In this example,

We create a mutable string slice `mut words` with unsorted elements.
We use a custom compare function or reverse the array after sorting to achieve descending order.
We print the sorted array.

Rust Program

fn main() {
    let mut words = ["banana", "apple", "orange", "grape"];
    words.sort_by(|a, b| b.cmp(a));
    println!("Sorted Array Descending:");
    for word in &words {
        println!("{}", word);
    }
}

Output

Sorted Array Descending:
orange
grape
banana
apple

Summary

In this tutorial, we learned How to Sort a String Array in Dictionary Order in Rust language with well detailed examples.

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How to Sort a String Array in Dictionary Order in Rust

How to Sort a String Array in Dictionary Order in Rust ?

Answer

✐ Examples

1 Sort String Array Ascending

Rust Program

Output

2 Sort String Array Descending

Rust Program

Output

Summary

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