adding majority element

Author: ivanpenaloza

src/my_project/interviews/interview_amazon/round_1/steps_to_squal_strings.py

@@ -0,0 +1,11 @@
+def getRemovableIndices(str1, str2):
+    if len(str1) != len(str2) + 1:
+        return [-1]
+    else: 
+        indices = []
+        
+        for i in range(len(str1)):
+            if str1[:i] + str1[i+1:] == str2:
+                indices.append(i)
+        
+        return indices if indices else [-1]

src/my_project/interviews/top_150_questions_round_17/majority_element.py

@@ -0,0 +1,20 @@
+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]
+            
+        return -1

tests/test_150_questions_round_17/test_majority_element_round_17.py

@@ -0,0 +1,17 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_17\
+.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)