LeetCode 1118. Number of Days in a Month

Problem Statement

impl Solution {
    fn is_leap_year(y: i32) -> bool {
        return (y % 4 == 0 && y % 100 != 0) || (y % 400 == 0);
    }

    pub fn number_of_days(y: i32, m: i32) -> i32 {
        let feb = match Self::is_leap_year(y)  {
            true => 29,
            false => 28
        };
        let ans = vec![31,feb,31,30,31,30,31,31,30,31,30,31];
        return ans[m as usize - 1];
    }
}