1.
Zawartość pliku whatnext.js

const redis = require('redis');

const client = redis.createClient();

client.on("error", (err) => { console.log("Error " + err); });

var BreakException = {};



function nextWord(lastWord, currentText) {

    client.zrevrange(`word:${lastWord}:nextwords`, 0, -1, function(err, replies) {

        console.log(`Word ${lastWord}:`)

        var i = 0;

        replies.forEach((reply) => {

            if (i < 5 && reply.startsWith(currentText)) {

                console.log(reply);

                ++i;

            }

        })

    });

}



nextWord("greater", "t");

nextWord("kill", "h");

nextWord("watson", "s");



client.quit();



Wyniki dla parametrów:

greater, t

than

trust



kill, h

him

her

his

watson, s

said

should

surely

so

shrugged
2
const fs = require('fs'), redis = require('redis');



function readFile(filename, key) {

    const client = redis.createClient();

    client.on("error", (err) => { console.log("Error " + err); });

    fs.readFile(filename, 'utf8', function(err, data) {

        if (err) {

            return console.log(err);

        }

        var splits = data.split(/\W/).filter(

            (value) => value.length > 1

        ).map(

            (value) => value.toLocaleLowerCase()

        );

        splits.forEach((value, index) => {

            client.sadd(key, value);

        });

        client.quit();

    });

}



readFile('cano.txt', 'arthur');

readFile('t8.shakespeare.txt', 'william');
3
a. William Shakespeare Poprawnie
4
9792
5
const fs = require('fs'), redis = require('redis');



function readFile(filename, key) {

    const client = redis.createClient();

    client.on("error", (err) => { console.log("Error " + err); });

    fs.readFile(filename, 'utf8', function(err, data) {

        if (err) {

            return console.log(err);

        }

        var splits = data.split(/\W/).filter(

            (value) => value.length > 1

        ).map(

            (value) => value.toLocaleLowerCase()

        );

        splits.forEach((value, index) => {

            client.zadd(key, 0, value);

        });

        client.quit();

    });

}



readFile('cano.txt', 'sorted');

readFile('t8.shakespeare.txt', 'sorted');
6
16408
7
alack
ale porpawna odpowiedź to ponoć
`antiumz
antium
8
23870
9
const fs = require('fs'), redis = require('redis');



function readSortedList(listKey, sortedListKey, mapKey) {

    const client = redis.createClient();

    client.on("error", (err) => { console.log("Error " + err); });

    client.zrange(sortedListKey, 0, -1, function(err, sortedReplies) {

        if (err)

            throw(err);

        sortedReplies.forEach((value, index) => {

            client.sismember(listKey, value, function(err1, isMember) {

                if (err1)

                    throw(err1);

                if (isMember)

                    client.setbit(mapKey, index, 1);

            })

        });

    })

    client.bitpos(mapKey, 0, function(err, ret) {

        console.log(ret);

    });

    // client.quit();

}



readSortedList('arthur', 'sorted', 'arthur:bitwords');
10
fałsz
11
0238
12
const redis = require('redis');



function createHyperLogLog(arthur, william, logKey) {

    const client = redis.createClient();

    client.on("error", (err) => { console.log("Error " + err); });

    client.sinter(arthur, william, function(err, values) {

        if (err)

            throw(err);

        values.forEach((value, index) => {

            client.pfadd(logKey, value);

        })

    });

}



createHyperLogLog('arthur', 'william', 'arthur:hyperwords');
13
53
14
48,67
Ale dobra odpowiedź to ponoć
5
15
const dbKeys = await client.keysAsync("db:*");

(. . .)

type = await client.hgetAsync("db:"+name, "type");

release = await client.hgetAsync("db:"+name, "current_release");

score = await client.hgetAsync("db:"+name, "score");
A szesnastego nie ma