Distribute Candies LeetCode solution in Rust

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use std::collections::HashSet;
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impl Solution {
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  pub fn distribute_candies(candy_type: Vec<i32>) -> i32 {
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    let len = candy_type.len();
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    let hashset: HashSet<i32> = candy_type.into_iter().collect();
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    std::cmp::min(len / 2, hashset.len()) as i32
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  }
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}