rust_test/src/main.rs

use std::cmp::max;
use std::collections::HashMap;

struct Solution;
impl Solution {
    pub fn maximum_unique_subarray(nums: Vec<i32>) -> i32 {
        let mut map: HashMap<i32, usize> = HashMap::new();
        let mut ans = 0;
        for i in  0..nums.len() {
            if map.contains_key(&nums[i]) {
                let l = i - map.len();
                let r = i;
                let mut temp = 0;
                let mut j = l;
                while j < r {
                    temp += nums[j];
                    j+=1;
                }
                ans = max(ans, temp);
                j = l;
                while nums[j] != nums[i] {
                    map.remove(&nums[j]);
                    j += 1;
                }
                map.insert(nums[i], i);
            }
            else {
                map.insert(nums[i], i);
            }
        }
        let mut temp = 0;
        let mut j = nums.len() - map.len();
        while j < nums.len() {
            temp += nums[j];
            j += 1;
        }
        max(ans, temp)
    }
}

fn main() {
    let sl = Solution::maximum_unique_subarray(vec![4,2,4,5,6]);
    println!("{}", sl);
}