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[Unit Testing] Jasmine Spies
it ('should add two numbers', () => { const logger = jasmine.createSpyObj('LoggerService', ['log']) // logger.log.and.returnValue(); const calculator ...
分类:其他好文   时间:2020-02-10 09:52:34    阅读次数:50
LeetCode167. Two Sum II - Input array is sorted(双指针)
题意:对于一个有序数组,输出和为target的两个元素的下标。题目保证仅有唯一解。 分析: 法一:二分。枚举第一个元素,二分找另一个元素,时间复杂度O(nlogn),非最优解。 class Solution { public: vector<int> twoSum(vector<int>& numb ...
分类:其他好文   时间:2020-02-09 22:14:01    阅读次数:73
LeetCode 1347. Minimum Number of Steps to Make Two Strings Anagram
"题目" 用hash,比较两个字符串数组的每个字符的hash值 ...
分类:其他好文   时间:2020-02-09 20:36:37    阅读次数:64
【leetcode】1346. Check If N and Its Double Exist
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 ...
分类:其他好文   时间:2020-02-09 18:55:33    阅读次数:79
【leetcode】1347. Minimum Number of Steps to Make Two Strings Anagram
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 ...
分类:其他好文   时间:2020-02-09 18:39:10    阅读次数:68
【leetcode】1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold
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  ...
分类:其他好文   时间:2020-02-09 18:18:53    阅读次数:52
【leetcode】1344. Angle Between Hands of a Clock
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 ...
分类:其他好文   时间:2020-02-09 18:15:29    阅读次数:313
【leetcode】1348. Tweet Counts Per Frequency
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  ...
分类:其他好文   时间:2020-02-09 18:10:45    阅读次数:50
LC 127. Word Ladder (two end bfs)
Link class Solution { public: int ladderLength(string beginWord, string endWord, vector<string>& wordList) { unordered_set<string> words; for(auto &s: ...
分类:其他好文   时间:2020-02-09 11:19:33    阅读次数:67
Flip Game / POJ 1753
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 ...
分类:其他好文   时间:2020-02-08 22:02:58    阅读次数:86
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