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864 B

edit_distance

Instructions

Create a function call edit_distance that calculates the minimum number of changes (insertion, deletions and substitutions) that need to be made to a string source to arrive to another target string

Expected Function

pub fn edit_distance(source: &str, target: &str) -> usize {
}

Notions

For more information and examples https://en.wikipedia.org/wiki/Edit_distance

Usage

Here is a program to test your function.

fn main() {
	let source = "alignment";
	let target = "assignment";
	println!(
		"It's necessary to make {} change(s) to {}, to get {}",
		edit_distance(source, target),
		source,
		target
	);
}

And its output

student@ubuntu:~/[[ROOT]]/test$ cargo run
It's necessary to make 2 change(s) to alignment, to get assignment
student@ubuntu:~/[[ROOT]]/test$