LeetCode 1631. Path With Minimum Effort
Description https://leetcode.com/problems/path-with-minimum-effort/ You are a hiker preparing for an upcoming hike. You are given heights, a 2D array of size rows x…
Month: October 2021
LeetCode 272. Closest Binary Search Tree Value II
Description https://leetcode.com/problems/closest-binary-search-tree-value-ii/ Given the root of a binary search tree, a target value, and an integer k, return the k values in the BST that are closest to…
LeetCode 1197. Minimum Knight Moves
Description https://leetcode.com/problems/minimum-knight-moves/ In an infinite chess board with coordinates from -infinity to +infinity, you have a knight at square [0, 0]. A knight has 8 possible moves it…
LeetCode 444. Sequence Reconstruction
Description https://leetcode.com/problems/sequence-reconstruction/ Check whether the original sequence org can be uniquely reconstructed from the sequences in seqs. The org sequence is a permutation of the…
LeetCode 702. Search in a Sorted Array of Unknown Size
Description https://leetcode.com/problems/search-in-a-sorted-array-of-unknown-size/ This is an interactive problem. You have a sorted array of unique elements and an unknown size. You do not have an…
LeetCode 261. Graph Valid Tree
Description https://leetcode.com/problems/minimum-size-subarray-sum/ You have a graph of n nodes labeled from 0 to n – 1. You are given an integer n and a list…
LeetCode 209. Minimum Size Subarray Sum
Description https://leetcode.com/problems/minimum-size-subarray-sum/ Given an array of positive integers nums and a positive integer target, return the minimal length of a contiguous subarray [numsl, numsl+1, …,…