原创 [LeetCode252]Meeting Rooms
Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],...] (si < ei), determi
2020-06-17 15:29:53
原创 [LeetCode253]Meeting Rooms II
Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],...] (si < ei), find th
2020-06-17 15:29:53
原创 [LeetCode267]Palindrome Permutation II
Given a string s, return all the palindromic permutations (without duplicates) of it. Return an empty list if no pa
2020-06-17 15:29:53
原创 [LeetCode254]Factor Combinations
Numbers can be regarded as product of its factors. For example, 8 = 2 x 2 x 2; = 2 x 4. Write a function that ta
2020-06-17 15:29:53
1
原创 [LeetCode255]Verify Preorder Sequence in Binary Search Tree
Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary search tree. Y
2020-06-17 15:29:53
1
原创 [LeetCode261] Graph Valid Tree
Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a functi
2020-06-17 15:29:53
原创 [LeetCode271]Encode and Decode Strings
Design an algorithm to encode a list of strings to a string. The encoded string is then sent over the network and i
2020-06-17 15:29:41
原创 [LeetCode280] Wiggle Sort
Given an unsorted array nums, reorder it in-place such that nums[0] <= nums[1] >= nums[2] <= nums[3].... For examp
2020-02-20 19:38:42
原创 [LeetCode270]Closest Binary Search Tree Value
Given a non-empty binary search tree and a target value, find the value in the BST that is closest to the target.
2020-02-20 19:38:42
原创 [LeetCode265]Paint House II
There are a row of n houses, each house can be painted with one of the k colors. The cost of painting each house wi
2020-02-20 19:38:42
原创 [LeetCode256]Paint House
There are a row of n houses, each house can be painted with one of the three colors: red, blue or green. The cost o
2020-02-20 19:38:42
原创 [LeetCode277]Find the Celebrity
Suppose you are at a party with n people (labeled from 0 to n - 1) and among them, there may exist one celebrity. T
2020-02-20 19:38:41
原创 [LeetCode259]3Sum Smaller
Given an array of n integers nums and a target, find the number of index triplets i, j, k with 0 <= i < j < k < n t
2020-02-20 19:38:41
原创 [LeetCode282]Closest Binary Search Tree Value II
Given a non-empty binary search tree and a target value, find k values in the BST that are closest to the target.
2020-02-20 19:38:41
原创 [LeetCode276]Paint Fence
There is a fence with n posts, each post can be painted with one of the k colors. You have to paint all the posts
2020-02-20 19:38:41