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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 阅读全文
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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, 阅读全文
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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] 阅读全文
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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 阅读全文
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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 阅读全文
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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 阅读全文
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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 阅读全文
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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 阅读全文
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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 阅读全文
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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 阅读全文