wsw_seu

摘要： 一致性哈希算法在1997年由麻省理工学院的Karger等人在解决分布式Cache中提出的，设计目标是为了解决因特网中的热点(Hot spot)问题，初衷和CARP十分类似。一致性哈希修正了CARP使用的简单哈希算法带来的问题，使得DHT可以在P2P环境中真正得到应用。 但现在一致性hash算法在分布 阅读全文

摘要： Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. Example 1: Input: n = 12 O 阅读全文

摘要： Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. Example: Input: 阅读全文

摘要： Given an array of integers nums containing n + 1 integers where each integer is in the range [1, n] inclusive. There is only one duplicate number in n 阅读全文

摘要： According to the Wikipedia's article: "The Game of Life, also known simply as Life, is a cellular automaton devised by the British mathematician John 阅读全文

摘要： You are given an integer array nums and you have to return a new counts array. The counts array has the property where counts[i] is the number of smal 阅读全文

摘要： You are given coins of different denominations and a total amount of money amount. Write a function to compute the fewest number of coins that you nee 阅读全文

摘要： Given a singly linked list, group all odd nodes together followed by the even nodes. Please note here we are talking about the node number and not the 阅读全文

摘要： Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to four directions: left, right, up or do 阅读全文

摘要： Given a string, sort it in decreasing order based on the frequency of characters. Example 1: Input: "tree" Output: "eert" Explanation: 'e' appears twi 阅读全文