rust_test/src/main.rs

struct Solution;
impl Solution {
    pub fn find_anagrams(s: String, p: String) -> Vec<i32> {
        if s.len() < p.len() {
            return vec![];
        }
        let mut res = vec![];
        let mut p_count = [0; 26];
        let mut s_count = [0; 26];
        for i in 0..p.len() {
            p_count[(p.as_bytes()[i] - b'a') as usize] += 1;
        }
        for i in 0..p.len() {
            s_count[(s.as_bytes()[i] - b'a') as usize] += 1;
        }
        for i in p.len()..s.len() {
            if p_count == s_count {
                res.push((i - p.len()) as i32);
            }
            s_count[(s.as_bytes()[i] - b'a') as usize] += 1;
            s_count[(s.as_bytes()[i - p.len()] - b'a') as usize] -= 1;
        }
        if p_count == s_count {
            res.push((s.len() - p.len()) as i32);
        }
        res
    }
}

fn main() {
    let sl = Solution::find_anagrams("cbaebabacd".to_string(), "abc".to_string());
    println!("{:?}", sl);
}