xiaoyongyong

摘要： 341. Flatten Nested List Iterator Medium 29571025Add to ListShare You are given a nested list of integers nestedList. Each element is either an intege 阅读全文

摘要： 53. Maximum Subarray Easy Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and ret 阅读全文

摘要： 295. Find Median from Data Stream Hard 6150114Add to ListShare The median is the middle value in an ordered integer list. If the size of the list is e 阅读全文

摘要： 198. House Robber Medium 10797236Add to ListShare You are a professional robber planning to rob houses along a street. Each house has a certain amount 阅读全文

摘要： 399. Evaluate Division Medium You are given an array of variable pairs equations and an array of real numbers values, where equations[i] = [Ai, Bi] an 阅读全文

摘要： composition vs inheritance composition mean A has B or A contains B. (A has a property whose type is B) inheritance mean A is B. (A extend B) 优缺点对比： c 阅读全文

摘要： 269. Alien Dictionary There is a new alien language that uses the English alphabet. However, the order among the letters is unknown to you. You are gi 阅读全文

摘要： Longest common subarray in the given two arrays Given two arrays A[] and B[] of N and M integers respectively, the task is to find the maximum length 阅读全文

摘要： 460. LFU Cache Hard Design and implement a data structure for a Least Frequently Used (LFU) cache. Implement the LFUCache class: LFUCache(int capacity 阅读全文

摘要： 560. Subarray Sum Equals K Medium Given an array of integers nums and an integer k, return the total number of continuous subarrays whose sum equals t 阅读全文