May 12

Author: siddydutta

2025-05-May-LeetCoding-Challenge/Finding 3-Digit Even Numbers.py

@@ -0,0 +1,26 @@
+from collections import Counter
+
+
+class Solution:
+    def __is_number(self, num: int) -> bool:
+        freqs = Counter(str(num))
+        return freqs == (self.counts & freqs)
+
+    def findEvenNumbers(self, digits: list[int]) -> list[int]:
+        self.counts = Counter(map(str, digits))
+        return list(filter(self.__is_number, range(100, 1000, 2)))
+
+
+def main():
+    digits = [2, 1, 3, 0]
+    assert Solution().findEvenNumbers(digits) == [102, 120, 130, 132, 210, 230, 302, 310, 312, 320]
+
+    digits = [2, 2, 8, 8, 2]
+    assert Solution().findEvenNumbers(digits) == [222, 228, 282, 288, 822, 828, 882]
+
+    digits = [3, 7, 5]
+    assert Solution().findEvenNumbers(digits) == []
+
+
+if __name__ == '__main__':
+    main()

2025-05-May-LeetCoding-Challenge/README.md

@@ -15,7 +15,7 @@
 | May 09 | [3343. Count Number of Balanced Permutations](https://leetcode.com/problems/count-number-of-balanced-permutations/) | Hard | Unsolved |
 | May 10 | [2918. Minimum Equal Sum of Two Arrays After Replacing Zeros](https://leetcode.com/problems/minimum-equal-sum-of-two-arrays-after-replacing-zeros/) | Medium | Solved |
 | May 11 | [1550. Three Consecutive Odds](https://leetcode.com/problems/three-consecutive-odds/) | Easy | Solved |
-| May 12 | []() |  |  |
+| May 12 | [2094. Finding 3-Digit Even Numbers](https://leetcode.com/problems/finding-3-digit-even-numbers/) | Easy | Solved |
 | May 13 | []() |  |  |
 | May 14 | []() |  |  |
 | May 15 | []() |  |  |
@@ -40,6 +40,6 @@
 ## Summary
 | Level  | Problems | Solved | Unsolved |
 | ---    | --- | --- | --- |
-| Easy   | 3 | 3 | 0 |
+| Easy   | 4 | 4 | 0 |
 | Medium | 6 | 6 | 0 |
 | Hard   | 2 | 1 | 1 |