adding updates

src/my_project/interviews/top_150_questions_round_22/ex_143_best_time_to_buy_stock_iii.py

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+from typing import List
+
+
+class Solution:
+    def maxProfit(self, prices: List[int]) -> int:
+        buy1 = float('-inf')
+        sell1 = 0
+        buy2 = float('-inf')
+        sell2 = 0
+
+        for price in prices:
+            buy1 = max(buy1, -price)
+            sell1 = max(sell1, buy1 + price)
+            buy2 = max(buy2, sell1 - price)
+            sell2 = max(sell2, buy2 + price)
+
+        return sell2

src/my_project/interviews_typescript/top_150_questions_round_1/ex_143_best_time_to_buy_stock_iii.ts

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+function maxProfit(prices: number[]): number {
+    let buy1 = -Infinity;
+    let sell1 = 0;
+    let buy2 = -Infinity;
+    let sell2 = 0;
+
+    for (const price of prices) {
+        buy1 = Math.max(buy1, -price);
+        sell1 = Math.max(sell1, buy1 + price);
+        buy2 = Math.max(buy2, sell1 - price);
+        sell2 = Math.max(sell2, buy2 + price);
+    }
+
+    return sell2;
+}

tests/test_150_questions_round_22/test_143_best_time_to_buy_stock_iii_round_22.py

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+import unittest
+from src.my_project.interviews.top_150_questions_round_22\
+.ex_143_best_time_to_buy_stock_iii import Solution
+
+
+class BestTimeToBuyStockIIITestCase(unittest.TestCase):
+    def setUp(self):
+        self.solution = Solution()
+
+    def test_example_1(self):
+        self.assertEqual(self.solution.maxProfit([3, 3, 5, 0, 0, 3, 1, 4]), 6)
+
+    def test_example_2(self):
+        self.assertEqual(self.solution.maxProfit([1, 2, 3, 4, 5]), 4)
+
+    def test_example_3(self):
+        self.assertEqual(self.solution.maxProfit([7, 6, 4, 3, 1]), 0)