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https://leetcode.com/problems/minimum-height-trees/description/ Leetcode - Minimum Height Trees 문제 유형 : bfs / 위상 정렬 문제 난이도 : Medium 문제 A tree is an undirected graph in which any two vertices are connected by exactly one path. In other words, any connected graph without simple cycles is a tree. Given a tree of n nodes labelled from 0 to n - 1, and an array of n - 1 edges where edges[i] = [ai, bi]..

https://leetcode.com/problems/open-the-lock/description/ Leetcode - Open the Lock 문제 유형 : dfs/bfs, 문자열 처리 문제 난이도 : Medium 문제 You have a lock in front of you with 4 circular wheels. Each wheel has 10 slots: '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'. The wheels can rotate freely and wrap around: for example we can turn '9' to be '0', or '0' to be '9'. Each move consists of turning one wheel..

https://leetcode.com/problems/find-if-path-exists-in-graph/description/ Leetcode - Find if Path Exists in Graph 문제 유형 : 그래프, dfs / bfs 문제 난이도 : Easy There is a bi-directional graph with n vertices, where each vertex is labeled from 0 to n - 1 (inclusive). The edges in the graph are represented as a 2D integer array edges, where each edges[i] = [ui, vi] denotes a bi-directional edge between verte..

https://leetcode.com/problems/find-all-groups-of-farmland/description/ Leetcode - Find All Groups of Farmland 문제 유형 : dfs/bfs, 행렬 문제 난이도 : Medium 문제 You are given a 0-indexed m x n binary matrix land where a 0 represents a hectare of forested land and a 1 represents a hectare of farmland. To keep the land organized, there are designated rectangular areas of hectares that consist entirely of farm..

https://school.programmers.co.kr/learn/courses/30/lessons/43163 프로그래머스 코드 중심의 개발자 채용. 스택 기반의 포지션 매칭. 프로그래머스의 개발자 맞춤형 프로필을 등록하고, 나와 기술 궁합이 잘 맞는 기업들을 매칭 받으세요. programmers.co.kr 프로그래머스 - 단어 변환 문제 유형 : DFS/BFS 문제 난이도 : Level 3 문제 두 개의 단어 begin, target과 단어의 집합 words가 있습니다. 아래와 같은 규칙을 이용하여 begin에서 target으로 변환하는 가장 짧은 변환 과정을 찾으려고 합니다. 1. 한 번에 한 개의 알파벳만 바꿀 수 있습니다. 2. words에 있는 단어로만 변환할 수 있습니다. 예를 들어 beg..

https://leetcode.com/problems/amount-of-time-for-binary-tree-to-be-infected/description/ Amount of Time for Binary Tree to Be Infected - LeetCodeCan you solve this real interview question? Amount of Time for Binary Tree to Be Infected - You are given the root of a binary tree with unique values, and an integer start. At minute 0, an infection starts from the node with value start. Each minute, a..

https://leetcode.com/problems/range-sum-of-bst/description/ Range Sum of BST - LeetCode Can you solve this real interview question? Range Sum of BST - Given the root node of a binary search tree and two integers low and high, return the sum of values of all nodes with a value in the inclusive range [low, high]. Example 1: [https://assets.l leetcode.com leetcode - Range Sum of BST 문제 유형 : bfs/dfs..

https://school.programmers.co.kr/learn/courses/30/lessons/150365 프로그래머스 코드 중심의 개발자 채용. 스택 기반의 포지션 매칭. 프로그래머스의 개발자 맞춤형 프로필을 등록하고, 나와 기술 궁합이 잘 맞는 기업들을 매칭 받으세요. programmers.co.kr 프로그래머스 - 미로 탈출 명령어 (2023 KAKAO BLIND RECRUITMENT) 문제 유형 : bfs/dfs 문제 난이도 : Level 3 문제 설명 n x m 격자 미로가 주어집니다. 당신은 미로의 (x, y)에서 출발해 (r, c)로 이동해서 탈출해야 합니다. 단, 미로를 탈출하는 조건이 세 가지 있습니다. 격자의 바깥으로는 나갈 수 없습니다. (x, y)에서 (r, c)까지 이동하..

https://leetcode.com/problems/find-largest-value-in-each-tree-row/description/ Find Largest Value in Each Tree Row - LeetCode Can you solve this real interview question? Find Largest Value in Each Tree Row - Given the root of a binary tree, return an array of the largest value in each row of the tree (0-indexed). Example 1: [https://assets.leetcode.com/uploads/2020/08/21/large leetcode.com leetc..

https://leetcode.com/problems/validate-binary-tree-nodes/description/ Validate Binary Tree Nodes - LeetCode Can you solve this real interview question? Validate Binary Tree Nodes - You have n binary tree nodes numbered from 0 to n - 1 where node i has two children leftChild[i] and rightChild[i], return true if and only if all the given nodes form exactly one val leetcode.com 문제 유형 : BFS / DFS 문제..