From 3390db92ab5cbc606c0a9efeda556426e7aba6dc Mon Sep 17 00:00:00 2001
From: ivan <ivan1016017@gmail.com>
Date: Fri, 13 Dec 2024 04:25:53 -0600
Subject: [PATCH] adding majority element algo

---
 .../majority_element.py                       | 22 +++++++++++++++++++
 .../test_majority_element_round_12.py         | 18 +++++++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 src/my_project/interviews/top_150_questions_round_12/majority_element.py
 create mode 100644 tests/test_150_questions_round_12/test_majority_element_round_12.py

diff --git a/src/my_project/interviews/top_150_questions_round_12/majority_element.py b/src/my_project/interviews/top_150_questions_round_12/majority_element.py
new file mode 100644
index 00000000..65d44398
--- /dev/null
+++ b/src/my_project/interviews/top_150_questions_round_12/majority_element.py
@@ -0,0 +1,22 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+
+class Solution:
+    def majorityElement(self, nums: List[int]) -> int:
+
+        dic_answer = dict()
+        len_nums = len(nums)
+
+        for i in range(len_nums):
+
+            if nums[i] not in dic_answer:
+                dic_answer[nums[i]] = 1
+            else: 
+                dic_answer[nums[i]] += 1
+
+            if dic_answer[nums[i]] > len_nums//2:
+                return nums[i]
+            else: 
+                pass 
+        
+        return -1
\ No newline at end of file
diff --git a/tests/test_150_questions_round_12/test_majority_element_round_12.py b/tests/test_150_questions_round_12/test_majority_element_round_12.py
new file mode 100644
index 00000000..70e34c75
--- /dev/null
+++ b/tests/test_150_questions_round_12/test_majority_element_round_12.py
@@ -0,0 +1,18 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_12\
+.majority_element import Solution
+
+
+class MajorityElementTestCase(unittest.TestCase):
+
+    def test_is_major_element(self):
+        solution = Solution()
+        output = solution.majorityElement(nums=[3,2,3])
+        target = 3
+        self.assertEqual(output, target)
+
+    def test_is_no_major_element(self):
+        solution = Solution()
+        output = solution.majorityElement(nums = [1,2,3])
+        target = -1
+        self.assertEqual(output, target)
\ No newline at end of file