269 Alien Dictionary 火星詞典 Description: There is a new alien language that uses the Engl...
269 Alien Dictionary 火星詞典 Description: There is a new alien language that uses the Engl...
267 Palindrome Permutation II 回文排列 II Description: Given a string s, return all the pal...
265 Paint House II 粉刷房子 II Description: There are a row of n houses, each house can be ...
254 Factor Combinations 因子的組合 Description: Numbers can be regarded as the product of th...
250 Count Univalue Subtrees 統(tǒng)計同值子樹 Description: Given the root of a binary tree, return...
156 Binary Tree Upside Down 上下翻轉(zhuǎn)二叉樹 Description: Given the root of a binary tree, turn ...
1367 Linked List in Binary Tree 二叉樹中的鏈表 Description: Given a binary tree root and a lin...
1366 Rank Teams by Votes 通過投票對團(tuán)隊排名 Description: In a special ranking system, each voter...
1363 Largest Multiple of Three 形成三的最大倍數(shù) Description: Given an array of digits digits, ...
1362 Closest Divisors 最接近的因數(shù) Description: Given an integer num, find the closest two in...
1361 Validate Binary Tree Nodes 驗證二叉樹 Description: You have n binary tree nodes numbere...
1359 Count All Valid Pickup and Delivery Options 有效的快遞序列數(shù)目 Description: Given n orders,...
1358 Number of Substrings Containing All Three Characters 包含所有三種字符的子字符串?dāng)?shù)目 Description: ...
1357 Apply Discount Every n Orders 每隔 n 個顧客打折 Description: There is a supermarket that ...
1353 Maximum Number of Events That Can Be Attended 最多可以參加的會議數(shù)目 Description: You are giv...
1352 Product of the Last K Numbers 最后 K 個數(shù)的乘積 Description: Design an algorithm that acc...
1349 Maximum Students Taking Exam 參加考試的最大學(xué)生數(shù) Description: Given a m * n matrix seats t...
1348 Tweet Counts Per Frequency 推文計數(shù) Description: A social media company is trying to m...
1347 Minimum Number of Steps to Make Two Strings Anagram 制造字母異位詞的最小步驟數(shù) Description: You...