题目如下： Given an array arr of integers, check if there exists two integers N and M such that N is the double of M ( i.e. N = 2 * M). More formally check ...
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其他好文 时间：
2020-02-09 18:55:33
阅读次数：
79
题目如下： Given two equal-size strings s and t. In one step you can choose any character of t and replace it with another character. Return the minimum nu ...
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其他好文 时间：
2020-02-09 18:39:10
阅读次数：
68
题目如下： Given a non-negative integer num, return the number of steps to reduce it to zero. If the current number is even, you have to divide it by 2, ot ...
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其他好文 时间：
2020-02-09 18:31:58
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64
题目如下： Given an array of integers arr and two integers k and threshold. Return the number of sub-arrays of size k and average greater than or equal to ...
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其他好文 时间：
2020-02-09 18:18:53
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52
题目如下： Given two numbers, hour and minutes. Return the smaller angle (in sexagesimal units) formed between the hour and the minute hand. Example 1: Inp ...
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其他好文 时间：
2020-02-09 18:15:29
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313
题目如下： Implement the class TweetCounts that supports two methods: 1. recordTweet(string tweetName, int time) Stores the tweetName at the recorded time ...
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其他好文 时间：
2020-02-09 18:10:45
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50
For some fixed , an array is beautiful if it is a permutation of the integers , such that: For every?`i 这道题定义了一种漂亮数组，说的是在任意两个数字之间，不存在一个正好是这两个数之和的一半的数字 ...
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编程语言 时间：
2020-02-09 16:59:46
阅读次数：
83
Link class Solution { public: int ladderLength(string beginWord, string endWord, vector<string>& wordList) { unordered_set<string> words; for(auto &s: ...
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其他好文 时间：
2020-02-09 11:19:33
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67
Flip game is played on a rectangular 4x4 field with two-sided pieces placed on each of its 16 squares. One side of each piece is white and the other o ...
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其他好文 时间：
2020-02-08 22:02:58
阅读次数：
86
题目如下： Given an array of integers arr and an integer d. In one step you can jump from index i to index: i + x where: i + x < arr.length and 0 < x <= d. ...
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其他好文 时间：
2020-02-08 16:04:58
阅读次数：
64
