diff --git a/easy/sort_array_by_increasing_frequency.py b/easy/sort_array_by_increasing_frequency.py
new file mode 100644
index 0000000..551ba50
--- /dev/null
+++ b/easy/sort_array_by_increasing_frequency.py
@@ -0,0 +1,8 @@
+# https://leetcode.com/problems/sort-array-by-increasing-frequency
+from collections import Counter
+from typing import List
+
+class Solution:
+    def frequencySort(self, nums: List[int]) -> List[int]:
+        freq = Counter(nums)
+        return sorted(nums, key=lambda x: (freq[x], -x))