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摘要： 题目：Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example,[1,1,2]have the following unique p... 阅读全文

摘要： 题目：Given a collection of numbers, return all possible permutations.For example,[1,2,3]have the following permutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],... 阅读全文

摘要： 题目：Given a collection of integers that might contain duplicates,nums, return all possible subsets.Note:Elements in a subset must be in non-descending ... 阅读全文

摘要： 题目：Given a set of distinct integers,nums, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set must ... 阅读全文

摘要： 题目：Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted fro... 阅读全文

摘要： 题目：Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in... 阅读全文

摘要： 题目：Given a sorted array of integers, find the starting and ending position of a given target value.Your algorithm's runtime complexity must be in the ... 阅读全文

摘要： 题目：Given an array withnobjects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red,... 阅读全文

摘要： 题目：Given an unsorted integer array, find the first missing positive integer.For example,Given[1,2,0]return3,and[3,4,-1,1]return2.Your algorithm should... 阅读全文

摘要： 题目：Sort a linked list inO(nlogn) time using constant space complexity.代码：/** * Definition for singly-linked list. * struct ListNode { * int val; *... 阅读全文