Tag：Law
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Time：2021-1-14
About the function name attribute, different declaration methods are different, there is no rule, you can only remember it by rote
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Time：2020-9-30
Title:Print the following pattern (diamond). * *** ***** ******* ***** *** * Program analysis:Firstly, the graph is divided into two parts: the first four lines have a rule, and the last three lines have a rule. Using the double for loop, the first level controls the row and the second level controls the column. example: […]
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Time：2020-8-23
People often use the word “overnight hit” to describe stars being famous, but such star products often appear in social networks. In the first half of 2015, “Zuji”, which just entered the social network, triggered a frenzy of sharing among wechat friends and became a popular app.So, how are the “fans” behind these star apps […]
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Time：2020-8-16
1、 Access to the mobile phone number segments of the three major operators in China Segment address As shown in the figure above, we can write regular rules according to the number segments of different operators, and also can write unified verification. I mainly write unified verification here. 2、 Ideas 1. In order to get […]
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Time：2020-6-6
Pareto analysis, or contribution analysis, looks for a small number of key or decisive factors in all factors. There is a common law, the 28 law. All walks of life are interpreting its profound meaning:For example:1. 80% of the company’s profits come from 20% of the best-selling products, while the other 80% of the products […]
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Time：2020-3-27
Given a set of intervals, please merge all overlapping intervals. Example 1: Input: [[1,3], [2,6], [8,10], [15,18]]Output: [[1,6], [8,10], [15,18]]Explanation: the intervals [1,3] and [2,6] overlap and merge them into [1,6]Example 2: Input: [[1,4], [4,5]]Output: [[1,5]]Explanation: the intervals [1,4] and [4,5] can be regarded as overlapping intervals. The main purpose is to find out the […]
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Time：2019-11-8
Recursion: The so-called recursion means that there are both transmission and regression. It is better to understand that it is a kind of “progressive” and “regular constraint” than to say that it is transmission and regression. Why do we say this? Compared with loop, recursion algorithm is more concise and clear in code structure. Recursion […]
