摘要：
题目: There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from 阅读全文
摘要：
题目： Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example,Given nums = [0, 阅读全文
摘要：
题目：Given a strings, return all the palindromic permutations (without duplicates) of it. Return an empty list if no palindromic permutation could be fo... 阅读全文
摘要：
题目： Given a string, determine if a permutation of the string could form a palindrome. For example,"code" -> False, "aab" -> True, "carerac" -> True. H 阅读全文
摘要：
题目： There are a row of n houses, each house can be painted with one of the k colors. The cost of painting each house with a certain color is different 阅读全文
摘要：
题目： Write a program to find the n-th ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For example, 1, 2, 3, 4, 阅读全文
摘要：
题目： Write a program to check whether a given number is an ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For 阅读全文
摘要：
题目： Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to check whether these edges 阅读全文
摘要：
题目： Given an array of numbers nums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find the two eleme 阅读全文
摘要：
题目：Given an array ofnintegersnumsand atarget, find the number of index tripletsi, j, kwith0 <= i < j < k < nthat satisfy the conditionnums[i] + nums[j... 阅读全文