Function replace_substring 

pub fn replace_substring(
    original: &str,
    start: usize,
    end: usize,
    replacement: &str,
) -> String

Replaces a substring in the original string with a replacement string.

Arguments

• original - The original string.
• start - The start position of the substring in the original string.
• end - The end position of the substring in the original string.
• replacement - The string to replace the substring.

Returns

• A new string with the replacement in place of the original substring.

Example

use blogs_md_easy::replace_substring;

let original = "Hello, World!";
let start = 7;
let end = 12;
let replacement = "Rust";
let result = replace_substring(original, start, end, replacement);
println!("{}", result);  // Prints: "Hello, Rust!"