From e8e1f6739bea68205780ea55addc1f26eeca42b0 Mon Sep 17 00:00:00 2001
From: ivan <ivan1016017@gmail.com>
Date: Sat, 11 Apr 2026 04:36:56 -0600
Subject: [PATCH] adding updates

---
 .../common_algos/two_sum_round_6.py           | 21 ++++++++++++++++++
 .../common_algos/valid_palindrome_round_6.py  | 22 +++++++++++++++++++
 .../ex_127_plus_one.py                        | 19 ++++++++++++++++
 .../ex_127_plus_one.ts                        | 10 +++++++++
 .../test_127_plus_one_round_22.py             | 19 ++++++++++++++++
 5 files changed, 91 insertions(+)
 create mode 100644 src/my_project/interviews/amazon_high_frequency_23/common_algos/two_sum_round_6.py
 create mode 100644 src/my_project/interviews/amazon_high_frequency_23/common_algos/valid_palindrome_round_6.py
 create mode 100644 src/my_project/interviews/top_150_questions_round_22/ex_127_plus_one.py
 create mode 100644 src/my_project/interviews_typescript/top_150_questions_round_1/ex_127_plus_one.ts
 create mode 100644 tests/test_150_questions_round_22/test_127_plus_one_round_22.py

diff --git a/src/my_project/interviews/amazon_high_frequency_23/common_algos/two_sum_round_6.py b/src/my_project/interviews/amazon_high_frequency_23/common_algos/two_sum_round_6.py
new file mode 100644
index 00000000..c7f907c0
--- /dev/null
+++ b/src/my_project/interviews/amazon_high_frequency_23/common_algos/two_sum_round_6.py
@@ -0,0 +1,21 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+
+class Solution:
+    def twoSum(self, nums: List[int], target: int) -> List[int]:
+
+        answer = dict()
+
+        for k, v in enumerate(nums):
+
+            if v in answer:
+                return [answer[v], k]
+            else:
+                answer[target - v] = k
+            
+        return []
+
+
+
+        
+
diff --git a/src/my_project/interviews/amazon_high_frequency_23/common_algos/valid_palindrome_round_6.py b/src/my_project/interviews/amazon_high_frequency_23/common_algos/valid_palindrome_round_6.py
new file mode 100644
index 00000000..fa21021b
--- /dev/null
+++ b/src/my_project/interviews/amazon_high_frequency_23/common_algos/valid_palindrome_round_6.py
@@ -0,0 +1,22 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+import re
+
+class Solution:
+    def isPalindrome(self, s: str) -> bool:
+
+        # To lowercase
+        s = s.lower()
+
+        # Remove non-alphanumeric characters
+        s = re.sub(pattern=r'[^a-zA-Z0-9]', repl='', string=s)
+
+        # Determine if s is palindrome or not
+        len_s = len(s)
+
+        for i in range(len_s//2):
+
+            if s[i] != s[len_s - 1 - i]:
+                return False
+            
+        return True 
diff --git a/src/my_project/interviews/top_150_questions_round_22/ex_127_plus_one.py b/src/my_project/interviews/top_150_questions_round_22/ex_127_plus_one.py
new file mode 100644
index 00000000..9fa085b1
--- /dev/null
+++ b/src/my_project/interviews/top_150_questions_round_22/ex_127_plus_one.py
@@ -0,0 +1,19 @@
+from typing import List 
+
+class Solution:
+    def plusOne(self, digits: List[int]) -> List[int]:
+
+        len_digits = len(digits)
+
+        for i in range(len_digits - 1, -1, -1):
+
+            if digits[i] != 9:
+                digits[i] += 1
+                break
+            else:
+                digits[i] = 0
+
+        if digits[0] == 0:
+            return [1] + digits
+        else: 
+            return digits
\ No newline at end of file
diff --git a/src/my_project/interviews_typescript/top_150_questions_round_1/ex_127_plus_one.ts b/src/my_project/interviews_typescript/top_150_questions_round_1/ex_127_plus_one.ts
new file mode 100644
index 00000000..b8fc0b8f
--- /dev/null
+++ b/src/my_project/interviews_typescript/top_150_questions_round_1/ex_127_plus_one.ts
@@ -0,0 +1,10 @@
+function plusOne(digits: number[]): number[] {
+    for (let i = digits.length - 1; i >= 0; i--) {
+        if (digits[i] !== 9) {
+            digits[i]++;
+            return digits;
+        }
+        digits[i] = 0;
+    }
+    return [1, ...digits];
+};
\ No newline at end of file
diff --git a/tests/test_150_questions_round_22/test_127_plus_one_round_22.py b/tests/test_150_questions_round_22/test_127_plus_one_round_22.py
new file mode 100644
index 00000000..c6acbadb
--- /dev/null
+++ b/tests/test_150_questions_round_22/test_127_plus_one_round_22.py
@@ -0,0 +1,19 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_22\
+.ex_127_plus_one import Solution
+
+class PlusOneTestCase(unittest.TestCase):
+
+    def test_leading_one(self):
+        solution = Solution()
+        output = solution.plusOne(digits=[9])
+        target = [1, 0] 
+        for k, v in enumerate(target):
+            self.assertEqual(v, output[k])
+
+    def test_no_leading_one(self):
+        solution = Solution()
+        output = solution.plusOne(digits=[1, 2])
+        target = [1, 3] 
+        for k, v in enumerate(target):
+            self.assertEqual(v, output[k])
\ No newline at end of file