MakerHyeon

https://leetcode.com/problems/design-browser-history/description/ Design Browser History - LeetCode Can you solve this real interview question? Design Browser History - You have a browser of one tab where you start on the homepage and you can visit another url, get back in the history number of steps or move forward in the history number of steps. Implem leetcode.com SOLUTION CODE # PYTHON 1) do..

https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/ Two Sum II - Input Array Is Sorted - LeetCode Can you solve this real interview question? Two Sum II - Input Array Is Sorted - Given a 1-indexed array of integers numbers that is already sorted in non-decreasing order, find two numbers such that they add up to a specific target number. Let these two n leetcode.com SOLUTION CODE # PY..

https://leetcode.com/problems/design-linked-list/description/ Design Linked List - LeetCode Can you solve this real interview question? Design Linked List - Design your implementation of the linked list. You can choose to use a singly or doubly linked list. A node in a singly linked list should have two attributes: val and next. val is the value leetcode.com SOLUTION CODE # PYTHON class ListNode..

https://leetcode.com/problems/valid-palindrome/description/ Valid Palindrome - LeetCode Can you solve this real interview question? Valid Palindrome - A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forward and backward. Alphanumeric cha leetcode.com ord(문자) 하나의 문자를 인자로 받고 해당 문자에 해당하는 유니코드 ..

https://leetcode.com/problems/longest-consecutive-sequence/description/ Longest Consecutive Sequence - LeetCode Can you solve this real interview question? Longest Consecutive Sequence - Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence. You must write an algorithm that runs in O(n) time. Example 1: Input: leetcode.com 'You must write an alg..

https://leetcode.com/problems/product-of-array-except-self/ Product of Array Except Self - LeetCode Product of Array Except Self - Given an integer array nums, return an array answer such that answer[i] is equal to the product of all the elements of nums except nums[i]. The product of any prefix or suffix of nums is guaranteed to fit in a 32-bit integer. leetcode.com idea => prefix, postfix를 이용하..

https://leetcode.com/problems/merge-two-sorted-lists/description/ Merge Two Sorted Lists - LeetCode Merge Two Sorted Lists - You are given the heads of two sorted linked lists list1 and list2. Merge the two lists in a one sorted list. The list should be made by splicing together the nodes of the first two lists. Return the head of the merged linked list. leetcode.com 문제자체는 쉽지만 재귀구현이 헷갈렸던문제이다. 그래..

https://leetcode.com/problems/reverse-linked-list/ Reverse Linked List - LeetCode Reverse Linked List - Given the head of a singly linked list, reverse the list, and return the reversed list. Example 1: [https://assets.leetcode.com/uploads/2021/02/19/rev1ex1.jpg] Input: head = [1,2,3,4,5] Output: [5,4,3,2,1] Example 2: [https://asset leetcode.com 미쳤다.재귀를 이문제를 통해 처음으로 완전히 이해했다!!!재귀가 이런거였군...!!! 개..