fn main() {
    println!("Hello, world!");
    let tests = [
        (121, true),
        (-121, false),
        (10, false),
        (1410110141, true)
    ];
    for test in tests {
        println!("{} is {} should be {}", test.0, Solution::is_palindrome(test.0), test.1);
    }
}


struct Solution {}
impl Solution {
    pub fn is_palindrome(x: i32) -> bool {
        if x < 0 {return false;}
        let len = (x as f32).log10() as usize;
        //println!("{} {}", len, (len+1)/2);
        for i in 0..(len+1)/2 {
            if (x as u32 / 10_u32.pow(i as u32)) % 10 != (x as u32 / 10_u32.pow((len - i) as u32)) % 10 {
                return false;
            }
        }
        true
    }
    pub fn get(x: i32, i: usize) -> u32 {
        (x as u32 / 10_u32.pow(i as u32)) % 10
    }
}