sunshisonghit

摘要： Bitwise AND of Numbers Range问题：Given a range [m, n] where 0 n || m>= 1; n >>= 1; moveFactor <<= 1; } return m * mo... 阅读全文

摘要： Best Time to Buy and Sell Stock III问题：Say you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find ... 阅读全文

摘要： First Missing Positive问题：Given an unsorted integer array, find the first missing positive integer.思路： A[A[i]] == A[i] 的经典应用我的代码：public class Solution... 阅读全文

摘要： Permutation Sequence问题：The set[1,2,3,…,n]contains a total ofn! unique permutations.By listing and labeling all of the permutations in order,思路：假设有n个元素... 阅读全文

摘要： Next Permutation问题：Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.If such arrange... 阅读全文

摘要： Gray Code问题：The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integernrepresenting the ... 阅读全文

摘要： Number of Islands问题：Given a 2d grid map of'1's (land) and'0's (water), count the number of islands. An island is surrounded by water and is formed by ... 阅读全文