20250328 finished.

src/problem/mod.rs

@@ -564,3 +564,5 @@ mod p2711_difference_of_number_of_distinct_values_on_diagonals;
 mod p2829_determine_the_minimum_sum_of_a_k_avoiding_array;
 
 mod p2712_minimum_cost_to_make_all_characters_equal;
+
+mod p2716_minimize_string_length;

src/problem/p2716_minimize_string_length.rs

@@ -0,0 +1,30 @@
+/**
+ * [2716] Minimize String Length
+ */
+pub struct Solution {}
+
+// submission codes start here
+use std::collections::HashSet;
+use std::iter::FromIterator;
+
+impl Solution {
+    pub fn minimized_string_length(s: String) -> i32 {
+        let set: HashSet<u8> = HashSet::from_iter(s.bytes());
+
+        set.len() as i32
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_2716() {
+        assert_eq!(3, Solution::minimized_string_length("aaabc".to_owned()));
+        assert_eq!(3, Solution::minimized_string_length("cbbd".to_owned()));
+        assert_eq!(2, Solution::minimized_string_length("dddaaa".to_owned()));
+    }
+}