原创 Contains Duplicate II
Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such
2020-02-22 21:15:36
原创 Implement strStr() - Javascript
Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of h
2020-02-22 21:15:36
2
原创 Range Sum Query - Javacript
Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Given
2020-02-22 21:15:36
原创 51. N-Queens
The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other.
2018-08-27 07:48:37
原创 212. Word Search II
Given a 2D board and a list of words from the dictionary, find all words in the board. Each word must be constructed
2018-08-27 07:48:36
1
原创 Binary Tree Paths - Javascript
Given a binary tree, return all root-to-leaf paths. For example, given the following binary tree: 1 / \ 2
2018-08-27 07:48:36
原创 Permutations
Given a collection of distinct numbers, return all possible permutations. For example,[1,2,3] have the following perm
2018-08-27 07:48:36
原创 69. Sqrt(x)
題目原意： Implement int sqrt(int x). Compute and return the square root of x. 實現int sqrt(int x). 計算並返回x的平方根。 Solution 1
2018-08-27 07:48:36
2
原创 Javascript Object, Set, Map總結
Dictionary Use objects as associated arrays. 定義：var object = {}; 常用方法： check whether key is in object: object.hashOwn
2018-08-27 07:48:36
原创 Isomorphic Strings - Javacript
Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be
2018-08-27 07:48:36
原创 Subsets
Given a set of distinct integers, nums, return all possible subsets. Note: The solution set must not contain duplicat
2018-08-27 07:48:36
原创 Binary Tree Inorder Traversal - JS
Given a binary tree, return the inorder traversal of its nodes' values. For example: Given binary tree [1,null,2,3],
2018-08-27 07:48:36
3
原创 Bulls and Cows - JS
You are playing the following Bulls and Cows game with your friend: You write down a number and ask your friend to gu
2018-08-27 07:48:36
2
原创 Remove Nth Node From End of List - JS
Given a linked list, remove the nth node from the end of list and return its head. For example, Given linked list:
2018-08-27 07:48:35
4
原创 Binary Tree Preorder -JS
Given a binary tree, return the preorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3},
2018-08-27 07:48:35