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Suppose I have a cube of iron, and I soak it whole into a bucket of red paint. Please note that the pigment cannot penetrate the iron, which means it can only stain the surface. Then, I fished out the iron block and cut it. The iron block has three dimensions as a cube. I made N flat cuts on each dimension to turn it into smaller cubes. For example, if I cut each face 2 times, I can get 27 small cubes, 3*3*3. Now the question is, after cutting N times, how many of the small cubes obtained are dipped in red paint? (Things that are dyed on one or more sides are counted.) The idea is very simple: to determine the number of cubes dipped in paint, subtract the number of undyed cubes from the total number of small cubes. Note: If I did not cut, the result should be 1. So we have the following code: var countSquares = function(cuts){ if(cuts == 0){return 1}; return Math.pow(
1. 10 recommended articles about interesting JavaScript topics
Introduction: Suppose I have a cube of iron, and I soak it in a bucket containing red paint. Please note that the paint cannot penetrate into the iron, which means it can only be given. Surface dyeing. Then, I took out the iron block and cut it. The iron block has three dimensions as a cube, and I made N smooth cuts in each dimension to make it into smaller cubes. For example, if I cut each side twice, I can get 27 small cubes, 3*3*3. Now the question is, after cutting N times, how many of the small cubes obtained are dipped in red paint? (Things that are dyed on one or more sides count) Ideas...
2. JavaScript Fun Question: Count the number of cubes dipped in paint
##Introduction: Suppose I have a cube of iron and I soak it in a bucket with red paint. Please note. , the pigment cannot penetrate into the iron block, which means it can only dye the surface.
##3.JavaScript fun question: Help the postman sort addresses
Introduction: The following is my implementation. What needs special attention is that if the postal code format is wrong (not 8 digits), then There is no need to perform string operations and return directly
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JavaScript Interesting Question: Statistical Precipitation##Introduction: The staff of the meteorological station has entrusted you to analyze a set of data. Here are the precipitation amounts of some cities around the world from January to December. The data is separated by "\n", and each city name is followed by a ":" colon
##5. JavaScript Fun Question: Find the Murderer#.
##Introduction: The result should be a string, if not found, return an empty string, if found If there are more than one, please return them and separate them with commas ##6.
JavaScript Interesting Question: Water CrisisIntroduction: Write a function that receives 2 parameters. The first is water representing the reserve amount N, and the second is ageOfDwellerArray representing the age list.
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JavaScript Fun Question: Paired Parentheses
# # Introduction: Let’s take a look at some examples first, so that we can quickly understand what “in pairs” means. 8. JavaScript Fun Question: Building a House
##Introduction: The volume of the bottom floor is N to the third power, the volume of the penultimate floor is (N-1) to the third power, and so on, the volume of the top floor is 1 to the third power. 9. JavaScript Fun Question: Statistical Binary Introduction: Those who work on the front end must have few opportunities to come into contact with binary. Aren't those bit operations something that the bottom layer should consider? 10. Interesting JavaScript question: Buggy arithmetic sequence
Introduction: A program has a bug when creating an arithmetic sequence. One item in the arithmetic sequence is missing, but the other items are intact. Please find this missing item. 【Related Q&A recommendations】:
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