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# Discussion on: Daily Challenge #260 - Subtract the Sum

Alex Lohr

Rust solution:

``````const FRUITS: [&'static str; 100] = [
"kiwi",
"pear",
"kiwi",
"banana",
"melon",
"banana",
"melon",
"pineapple",
"apple",
"pineapple",
"cucumber",
"pineapple",
"cucumber",
"orange",
"grape",
"orange",
"grape",
"apple",
"grape",
"cherry",
"pear",
"cherry",
"pear",
"kiwi",
"banana",
"kiwi",
"apple",
"melon",
"banana",
"melon",
"pineapple",
"melon",
"pineapple",
"cucumber",
"orange",
"apple",
"orange",
"grape",
"orange",
"grape",
"cherry",
"pear",
"cherry",
"pear",
"apple",
"pear",
"kiwi",
"banana",
"kiwi",
"banana",
"melon",
"pineapple",
"melon",
"apple",
"cucumber",
"pineapple",
"cucumber",
"orange",
"cucumber",
"orange",
"grape",
"cherry",
"apple",
"cherry",
"pear",
"cherry",
"pear",
"kiwi",
"pear",
"kiwi",
"banana",
"apple",
"banana",
"melon",
"pineapple",
"melon",
"pineapple",
"cucumber",
"pineapple",
"cucumber",
"apple",
"grape",
"orange",
"grape",
"cherry",
"grape",
"cherry",
"pear",
"cherry",
"apple",
"kiwi",
"banana",
"kiwi",
"banana",
"melon",
"banana",
"melon",
"pineapple",
"apple",
"pineapple",
];

fn subtract_sum(sum: i32) -> &'static str {
let mut s = sum;
*FRUITS
.iter()
.nth(loop {
if s <= 100 {
break (s - 1) as usize;
}
s -= s
.to_string()
.chars()
.map(|c| (c as u8 - 48) as i32)
.sum::<i32>();
})
.unwrap()
}
``````