原创 leetcode(187):Repeated DNA Sequences
原題： All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: “ACGAATTCCG”. When
2020-06-27 22:24:25
7
原创 leetcode(318):Maximum Product of Word Lengths
原題： Given a string array words, find the maximum value of length(word[i]) * length(word[j]) where the two words do
2020-06-27 22:24:25
2
原创 leetcode:Combination Sum(I,II)
原題： Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the cand
2020-06-27 22:24:25
原创 leetcode(368):Largest Divisible Subset
原題： Given a set of distinct positive integers, find the largest subset such that every pair (Si, Sj) of elements i
2020-06-27 22:24:25
4
原创 leetcode(78):Subsets
原題： Given a set of distinct integers, nums, return all possible subsets. Note: The solution set must not contain d
2020-06-27 22:24:14
1
原创 leetcode():Permutations
Permutations ： Given a collection of distinct numbers, return all possible permutations. For example, [1,2,3] hav
2020-06-27 22:24:14
原创 leetcode(282): Expression Add Operators
Given a string that contains only digits 0-9 and a target value,return all possibilities to add binary operators (n
2020-06-27 22:24:14
1
原创 leetcode(90):Subsets II
原題： Given a collection of integers that might contain duplicates, nums, return all possible subsets. Note: The sol
2020-06-27 22:24:14
原创 leetcode(45):Jump Game II
原題： Given an array of non-negative integers, you are initially positioned at the first index of the array. Each el
2020-02-21 01:49:26
原创 leetcode(17):Letter Combinations of a Phone Number
原題： Given a digit string, return all possible letter combinations that the number could represent. A mapping of di
2020-02-21 01:49:26
原创 leetcode(274):H-Index
原題: Given an array of citations (each citation is a non-negative integer) of a researcher, write a function to com
2020-02-21 01:49:25
原创 leetcode(150):Evaluate Reverse Polish Notation
原題： Evaluate the value of an arithmetic expression in Reverse Polish Notation. Valid operators are +, -, *, /. Eac
2020-02-21 01:49:25
原创 leetcode(375):Guess Number Higher or Lower II
原題： We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You have to guess which nu
2020-02-21 01:49:25
原创 leetcode:First Missing Positive
原題： Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3,
2020-02-21 01:49:25
原创 leetcode[208]:Implement Trie (Prefix Tree)
【題目】 Implement a trie with insert, search, and startsWith methods. Note: You may assume that all inputs are cons
2020-02-21 01:49:25