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摘要： 2007. Find Original Array From Doubled Array An integer array original is transformed into a doubled array changed by appending twice the value of eve 阅读全文

摘要： 378. Kth Smallest Element in a Sorted Matrix Solved Medium Topics Companies Given an n x n matrix where each of the rows and columns is sorted in asce 阅读全文

摘要： 149. Max Points on a Line Given an array of points where points[i] = [xi, yi] represents a point on the X-Y plane, return the maximum number of points 阅读全文

摘要： 2484. Count Palindromic Subsequences Given a string of digits s, return the number of palindromic subsequences of s having length 5. Since the answer 阅读全文

摘要： 31. Next Permutation Medium 168634309Add to ListShare A permutation of an array of integers is an arrangement of its members into a sequence or linear 阅读全文

摘要： 1235. Maximum Profit in Job Scheduling Hard 539662Add to ListShare We have n jobs, where every job is scheduled to be done from startTime[i] to endTim 阅读全文

摘要： Given an array of n elements, where each element is at most k away from its target position, you need to sort the array optimally. Example 1: Input: n 阅读全文

摘要： 273. Integer to English Words Hard 27865945Add to ListShare Convert a non-negative integer num to its English words representation. Example 1: Input: 阅读全文

摘要： 7. Reverse Integer Medium Given a signed 32-bit integer x, return x with its digits reversed. If reversing x causes the value to go outside the signed 阅读全文

摘要： 1569. Number of Ways to Reorder Array to Get Same BST Hard 1590185Add to ListShare Given an array nums that represents a permutation of integers from  阅读全文