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This article mainly introduces the meaning of bucket sorting in web development, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

Bucket sort

Bucket sorting (Bucket sort) is a count-based sorting algorithm (count sorting can be found in the previous section). It works by dividing the data into a limited number of buckets, and then sorting each bucket separately (it is possible to use another sorting algorithm or to continue to sort using bucket sorting recursively)

Algorithm step

Set a fixed number of empty buckets.

Put the data in the corresponding bucket.

Sorts the data in each bucket that is not empty.

Splice the data in the bucket that is not empty and get the result.

Algorithm demonstration

GIF is a little slow to load in the animation. Please wait a moment ^ _ ^

Process interpretation of sorting animation

First, set a fixed number of empty buckets. Here, for demonstration purposes, set the number of buckets to 5 empty buckets.

Traversing the entire sequence, we find that the maximum value is 56, the minimum value is 2, and the range of each bucket is (56-2 + 1) / 5 = 11.

Iterate through the entire sequence again and put the number in the corresponding bucket according to the formula floor ((number-minimum) / 11)

For example, put the number 7 into the formula floor ((7-2) / 11) = 0 and put it in barrel 0.

The number 12 is substituted into the formula floor ((12-2) / 11) = 0 into barrel 0.

The number 56 is substituted into the formula floor ((56-2) / 11) = 4 into barrel 4.

When inserting data into a bucket of the same index for the second time, determine the size of the existing numbers in the bucket and the newly inserted numbers, and insert them in the order from left to right, from small to large (you can use the insertion sort described earlier).

For example, if you insert the number 19:00, and there is already the number 23 in barrel 1, use the insertion sort here to put the 19th row before 23.

After traversing the entire sequence, merge non-empty buckets, merging 0, 1, 2, 3, 4 barrels from left to right.

This completes the bucket sort.

Code implementation

In order to better let readers use their familiar programming language to understand animation, the author will post the reference code of a variety of programming languages, all from the Internet.

C++ code implementation

Java code implementation

JavaScript code implementation

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