Leetcode/rust/2778_sum_of_squares_of_special_elements.rs

impl Solution {
    pub fn sum_of_squares(nums: Vec<i32>) -> i32 {
        let n = nums.len();
        nums.iter().enumerate()
          .filter(|(i, x)| n % (i+1) == 0)
          .map(|(i, x)| x*x)
          .sum()
    }
}