values obtained? This is simple. in Linux, there is a high-precision calculator BC. You can edit the following text file exps_in.txt:
Scale = 30E (1) E (2) E (4) E (8) E (16) E (32) E (64) L (2 ^ 96-1) quit
E Indicates exp, L indicates ln, and 296-1 indicates decimal. maxvalue. Run the following command:
Work $BC-l exps_in.txt> exps_out.txt
The following output exps_out.txt can be obtained:
Bytes
A little bit of sorting can be used in the
:2.279em; " >
, the two-wpl tree with the minimum length of the weighted path is called the Huffman Tree.Suppose that there is a string with each character appearing as followsA:5B:15C:40D:30E:10Order characters to form an ordered sequence from small to large in number of occurrencesBottom-up processThe first stepStep TwoStep ThreeFourth StepConstruction completeConcept Supplement Copyright NOTICE: This article for Bo Master original article, witho
, select the newly added task scheduler, and right-click it and select the Copy command, paste it to other folders and get the suffix ". job. Finally, open the Email sending window, add the copied task plan file to the attachment, and send it to cainiao by Email. After receiving the task plan, drag and drop the task plan file to the task plan folder. Terminate task plans in batches In some cases, you may need to temporarily stop all scheduled tasks in the current system. It is too cumbersome
world is huge. That year Joe Master is spirited, but also never "60E" such a name, even if it is "30E", I am afraid there is no bar.Bryant became the NBA banner of the time, the NBA to the global expansion of the most intense period, a person, an alliance, so perfect fit together. NBA from a few of the original hobby, has become a common hobby of basketball enthusiasts, they marvel at The star outstanding at the same time, also after the ball ran to
course, Exec is also used. Here we use code instances to differentiate the differences between them.
Match Example
The Code is as follows:
Var str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz ";Var regexp =/[A-E]/gi;Var rs = str. match (regexp );// Rs = Array ('A', 'B', 'C', 'D', 'E', 'E', 'A', 'B', 'C ', 'D', 'E ');
Test Example
The Code is as follows:
Var str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz ";Var regexp =/[A-E]/gi;Var rs = regexp. test (str );// Rs = true
Huffman tree (Homan tree, and optimal binary tree)
Huffman tree (Homan tree, and optimal binary tree)
Flyfish 2015-8-1
The Huffman tree has different translations, so there are other names:Define reference from Yan Weimin Data StructurePathThe branches from one node in the tree to another constitute the path between two nodes.
Path LengthThe number of branches on the path is called the path length.
Tree path lengthThe tree path length is the sum of the path lengths from the root node to each nod
', ' d ', ' e ');
Test Example
Copy Code code as follows:
var str = "ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ";
var regexp =/[a-e]/gi;
var rs = regexp.test (str);
rs = true; Boolean
exc Example
Copy Code code as follows:
var str = "ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ";
var regexp =/[a-e]/gi;
var rs;
while (rs = regexp.exec (str))!= null)
{
document.write (RS);
document.write (Regexp.lastindex);
docume
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