用rust语言打印圣诞颂歌 “The Twelve Days of Christmas” 的歌词，并利用歌曲中的重复部分（编写循环）

好的，我可以使用 Rust 语言打印出圣诞颂歌 "The Twelve Days of Christmas" 的歌词，并且使用循环来避免重复代码。以下是代码：

fn main() {
    let days = ["first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth"];
    let gifts = ["a partridge in a pear tree", "two turtle doves", "three French hens", "four calling birds", "five gold rings", "six geese a-laying", "seven swans a-swimming", "eight maids a-milking", "nine ladies dancing", "ten lords a-leaping", "eleven pipers piping", "twelve drummers drumming"];
    
    for i in 0..12 {
        println!("On the {} day of Christmas, my true love sent to me:", days[i]);
        for j in (0..=i).rev() {
            if j == 0 && i != 0 {
                print!("And ");
            }
            println!("{}", gifts[j]);
        }
        println!();
    }
}

使用此代码，我将打印出圣诞颂歌的所有歌词，同时避免了重复代码。感谢您的问题！