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# leetcode 2063. Vowels of All Substrings (javascript)

December 05, 2022

🗒️ Problems Vowels of All Substrings - LeetCode Given a string word, return the sum of the number of vowels ('a', 'e', 'i', 'o', and 'u') in every substring of word. A substring is a contiguous (non-e…

# leetcode 36. Valid Sudoku (javascript)

November 23, 2022

One of the basic famous problem of Sudoku. And the advanced one is the Sudoku solver 🗒️ Problems Valid Sudoku - LeetCode Determine if a 9 x 9 Sudoku board is valid. Only the filled cells need to be v…

# leetcode 115. Distinct Subsequences (javascript)

November 16, 2022

🗒️ Problems Distinct Subsequences - LeetCode Given two strings s and t, return the number of distinct subsequences of s which equals t. The test cases are generated so that the answer fits on a 32-bit…

# leetcode 105. Construct Binary Tree from Preorder and Inorder Traversal (javascript)

November 08, 2022

🗒️ Problems Construct Binary Tree from Preorder and Inorder Traversal - LeetCode Given two integer arrays preorder and inorder where preorder is the preorder traversal of a binary tree and inorder is …

# leetcode 236. Lowest Common Ancestor of a Binary Tree (javascript)

November 02, 2022

🗒️ Problems Lowest Common Ancestor of a Binary Tree - LeetCode Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to the definition of LCA on Wikipedi…

# leetcode 1239. Maximum Length of a Concatenated String with Unique Characters (javascript)

October 24, 2022

🗒️ Problems Maximum Length of a Concatenated String with Unique Characters - LeetCode You are given an array of strings arr. A string s is formed by the concatenation of a subsequence of arr that has …

# leetcode 931. Minimum Falling Path Sum (javascript)

October 21, 2022

🗒️ Problems Minimum Falling Path Sum - LeetCode Given an n x n array of integers matrix, return the minimum sum of any falling path through matrix. A falling path starts at any element in the first ro…

# leetcode 1770. Maximum Score from Performing Multiplication Operations (javascript)

October 21, 2022

🗒️ Problems Maximum Score from Performing Multiplication Operations - LeetCode You are given two 0-indexed integer arrays nums and multipliers of size n and m respectively, where n >= m. You begin wit…

# leetcode 112. Integer to Roman (javascript)

October 20, 2022

🗒️ Problems (1) Integer to Roman - LeetCode Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. For example, 2 is written as II in Roman numeral, just two one's added to…

# leetcode 416. Partition Equal Subset Sum (javascript)

October 19, 2022

가장 먼저 생각난 솔루션은 backtrack 이지만 효율이 좋지 못하네요. knapsack을 이용한 dynamic programming 방법으로 푸는 방법이 있어서 정리해보았습니다. 🗒️ Problems Partition Equal Subset Sum - LeetCode Given a non-empty array nums containing only po…