diff --git a/leetCode/string/check-if-all-characters-have-equal-number-of-occurrences.rs b/leetCode/string/check-if-all-characters-have-equal-number-of-occurrences.rs
new file mode 100644
index 0000000..ade8319
--- /dev/null
+++ b/leetCode/string/check-if-all-characters-have-equal-number-of-occurrences.rs
@@ -0,0 +1,16 @@
+// https://leetcode.com/problems/check-if-all-characters-have-equal-number-of-occurrences
+use std::collections::{
+    HashMap,
+    HashSet,
+};
+
+impl Solution {
+    pub fn are_occurrences_equal(s: String) -> bool {
+        let mut letter_count = HashMap::<char, usize>::new();
+        for letter in s.chars() {
+            *letter_count.entry(letter).or_default() += 1;
+        }
+        let counts: HashSet<_> = letter_count.values().collect();
+        counts.len() == 1
+    }
+}