From 736891350c2989f427c3374b9afe2dca94e55473 Mon Sep 17 00:00:00 2001 From: ivan Date: Wed, 17 Dec 2025 03:59:25 -0600 Subject: [PATCH] adding algo --- .../common_algos/two_sum_round_3.py | 17 +++++++++++++ .../common_algos/valid_palindrome_round_3.py | 24 +++++++++++++++++++ 2 files changed, 41 insertions(+) create mode 100644 src/my_project/interviews/amazon_high_frequency_23/common_algos/two_sum_round_3.py create mode 100644 src/my_project/interviews/amazon_high_frequency_23/common_algos/valid_palindrome_round_3.py diff --git a/src/my_project/interviews/amazon_high_frequency_23/common_algos/two_sum_round_3.py b/src/my_project/interviews/amazon_high_frequency_23/common_algos/two_sum_round_3.py new file mode 100644 index 00000000..f9ad8550 --- /dev/null +++ b/src/my_project/interviews/amazon_high_frequency_23/common_algos/two_sum_round_3.py @@ -0,0 +1,17 @@ +from typing import List, Union, Collection, Mapping, Optional +from abc import ABC, abstractmethod +import re + +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 [] \ No newline at end of file diff --git a/src/my_project/interviews/amazon_high_frequency_23/common_algos/valid_palindrome_round_3.py b/src/my_project/interviews/amazon_high_frequency_23/common_algos/valid_palindrome_round_3.py new file mode 100644 index 00000000..e9084573 --- /dev/null +++ b/src/my_project/interviews/amazon_high_frequency_23/common_algos/valid_palindrome_round_3.py @@ -0,0 +1,24 @@ +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 +