majority-element/src/main.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

fn main() {
    println!("Hello, world!");
}

struct Solution;

use std::collections::HashMap;

impl Solution {
    pub fn majority_element(nums: Vec<i32>) -> i32 {
        let mut table = HashMap::new();

        for num in nums {
            *table.entry(num).or_insert(1) += 1;
        }

        *table.iter().reduce(|a,b| if a.1 > b.1 {a} else {b}).unwrap().0
    }
}