| Letter | $val21 | $val23 | $val25 | $val27 | $val29 | $val31 |
|---|---|---|---|---|---|---|
| Code | $val22 | $val24 | $val26 | $val28 | $val30 | $val32 |
According to the table, please encode the following message.
Attention. Don't add space between code letters!
| Element | A | B |
|---|---|---|
| Code | $val20 | $val21 |
Please find a distribution of probabilities {P(A),P(B)} such that the average length of this encoding equals $val26.
The two probabilities P(A), P(B) must be positive, and their sum must be equal to 1.
| Element | A | B | C |
|---|---|---|---|
| Code | $val20 | $val21 | $val22 |
Please find a distribution of probabilities {P(A),P(B),P(C)} such that the average length of this encoding equals $val28.
The three probabilities P(A), P(B), P(C) must be positive, and their sum must be equal to 1.
| Letter | $val21 | $val23 | $val25 | $val27 | $val29 | $val31 |
|---|---|---|---|---|---|---|
| Code | $val22 | $val24 | $val26 | $val28 | $val30 | $val32 |
According to the table, please decode the following coded message.
Attention. Don't add space between the letters!
| Value of byte | $val21 | $val22 | $val23 | $val24 | $val25 | $val26 |
|---|---|---|---|---|---|---|
| Number | $val14 | $val15 | $val16 | $val17 | $val18 | $val19 |
The binary entropy of the file is according to the numbers of bytes.
By recoding the bytes of the file by an optimal binary code of variable length, one can reduce the size of the file to bytes (without counting eventual headers).
| Letter | $val20 | $val22 | $val24 | $val26 | $val28 | $val30 |
|---|---|---|---|---|---|---|
| Code | $val21 | $val23 | $val25 | $val27 | $val29 | $val31 |
Is this an instaneous code?