01 2021 档案
摘要：Minimize Deviation in Array (H) 题目 You are given an array nums of n positive integers. You can perform two types of operations on any element of the a
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摘要：Smallest String With A Given Numeric Value (M) 题目 The numeric value of a lowercase character is defined as its position (1-indexed) in the alphabet, s
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摘要：Concatenation of Consecutive Binary Numbers (M) 题目 Given an integer n, return the decimal value of the binary string formed by concatenating the binar
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摘要：Path With Minimum Effort (M) 题目 You are a hiker preparing for an upcoming hike. You are given heights, a 2D array of size rows x columns, where height
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摘要：Check If All 1's Are at Least Length K Places Away (E) 题目 Given an array nums of 0s and 1s and an integer k, return True if all 1's are at least k pla
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摘要：Sort the Matrix Diagonally (M) 题目 A matrix diagonal is a diagonal line of cells starting from some cell in either the topmost row or leftmost column a
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摘要：Determine if Two Strings Are Close (M) 题目 Two strings are considered close if you can attain one from the other using the following operations: Operat
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摘要：Find the Most Competitive Subsequence (M) 题目 Given an integer array nums and a positive integer k, return the most competitive subsequence of nums of
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摘要：Count Sorted Vowel Strings (M) 题目 Given an integer n, return the number of strings of length n that consist only of vowels (a, e, i, o, u) and are lex
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摘要：Max Number of K-Sum Pairs (M) 题目 You are given an integer array nums and an integer k. In one operation, you can pick two numbers from the array whose
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摘要：Kth Largest Element in an Array (M) 题目 Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order,
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摘要：Get Maximum in Generated Array (E) 题目 You are given an integer n. An array nums of length n + 1 is generated in the following way: nums[0] = 0 nums[1]
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摘要：Minimum Operations to Reduce X to Zero (M) 题目 You are given an integer array nums and an integer x. In one operation, you can either remove the leftmo
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摘要：Boats to Save People (M) 题目 The i-th person has weight people[i], and each boat can carry a maximum weight of limit. Each boat carries at most 2 peopl
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摘要：Merge Sorted Array (E) 题目 Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note: The number of elements in
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摘要：Create Sorted Array through Instructions (H) 题目 Given an integer array instructions, you are asked to create a sorted array from the elements in instr
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摘要：Word Ladder (H) 题目 Given two words beginWord and endWord, and a dictionary wordList, return the length of the shortest transformation sequence from be
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摘要：Check If Two String Arrays are Equivalent (E) 题目 Given two string arrays word1 and word2, return true if the two arrays represent the same string, and
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摘要：Kth Missing Positive Number (E) 题目 Given an array arr of positive integers sorted in a strictly increasing order, and an integer k. Find the kth posit
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摘要：Remove Duplicates from Sorted List II (M) 题目 Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers f
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摘要：Beautiful Arrangement (M) 题目 Suppose you have n integers from 1 to n. We define a beautiful arrangement as an array that is constructed by these n num
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摘要：Find a Corresponding Node of a Binary Tree in a Clone of That Tree (M) 题目 Given two binary trees original and cloned and given a reference to a node t
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摘要：Check Array Formation Through Concatenation (E) 题目 You are given an array of distinct integers arr and an array of integer arrays pieces, where the in
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