La xaliyay: Sida loogu daro tirooyinka random-ka taban

Hubaal, waa kan maqaalka aad codsatay:

Tirooyinka aan sugnayn waxay door muhiim ah ka ciyaaraan meelo badan, gaar ahaan jilitaanka, qaabaynta xisaabta, iyo xataa ciyaaraha. Awoodda lagu soo saari karo barnaamij-samaynta ayaa markaa lama huraan ah. Inta badan, kama hadlayno tirooyinka nasiibka leh ee togan, laakiin sidoo kale kuwa taban. Barnaamijka Java, waxa jira habab la aqbalay oo aad raaci karto si aad u hirgeliso hawshan. Aan ku dhex boodno.

Ku dar nambarada randomka xun ee Java

Ku darida tirooyinka nasiibka xun waxaa lagu dhammeyn karaa iyadoo la isticmaalayo Java java.util. Random fasalka ama java.lang. Xisaab fasalka. Si kastaba ha noqotee, kiis gaar ah oo lambarrada random-ka xun, wax yar oo la jeexjeexay fasalladaas ayaa hubinaya guusha natiijooyinka la rabo.

import java.util.Random;

public class Main {
    public static void main(String[] args) {
        Random random = new Random();

        int randomInteger = -1 * random.nextInt(Integer.MAX_VALUE);
        System.out.println("Random Negative Integer: " + randomInteger);
    }
}

Xeerkii hore, the nextInt(Integer.MAX_VALUE) Shaqadu waxay abuurtaa shaandheyn togan oo random-ka ah oo ku dhufashada "-1" waxay u beddeshaa tiro taban.

Sharaxaada tallaabo-tallaabo ee Xeerka

Xariiq kasta oo kood ah oo Java ah ayaa door muhiim ah ka ciyaara natiijada barnaamijka. Koodhka la bixiyay, waxa jira hannaan sax ah oo ka dhasha abuurista tirooyin aan toos ahayn.

1. Soo dejiso java.util. Random Maktabadda: Maktabaddani waxay lama huraan u tahay in la siiyo hawlaha Random ee soo saarista lambarrada random.

import java.util.Random;

2. Abuuri shay random fasalka: Shayga 'random' waxa laga abuuray fasalka random si loo soo saaro tirooyin aan toos ahayn.

Random random = new Random();

3. Samee isugaynta random-ka togan: Habka `NextInt(Integer.MAX_VALUE)` waxa loo adeegsadaa si loo abuuro tiro togan oo random ah.

int randomInteger = random.nextInt(Integer.MAX_VALUE);

4. U beddel tirada togan una beddesho taban: Lambarka random-ka togan waxaa lagu dhufto "-1" si lambarka looga dhigo mid xun.

randomInteger = -1 * randomInteger;

5. Muuji natiijada: nambarka ayaa markaa lagu daabacay console-ka.

System.out.println("Random Negative Integer: " + randomInteger);

Maktabadaha Muhiimka ah ama Hawlaha ku lug leh

Maktabadaha Java ama hawlaha ku lug leh xallinta dhibaatadan waa ugu horreyn maktabadda `java.util.Random` iyo shaqadeeda 'xigaInt'.

The java.util. Random Maktabadu waxay bixisa API si ay u soo saarto qiimayaal random-ka-soo-jeed ah oo noocyo kala duwan ah oo xog ah sida boolean, sabbayn, integer, iwm. Tirooyinka random-ka ee taban, habka udub-dhexaadka ah 'xigaInt(int bound)' waa muhiim. Hawshani waxay soo celisaa qiimo- random-ka-soo-jeed ah, oo si isku mid ah loo qaybiyay qiimaha int ee u dhexeeya 0 (isku-dhafan) iyo qiimaha la cayimay (gaar ah).

Had iyo jeer xasuusnoow, Java waxa ay ku siinaysaa qalabyo kala duwan oo lagu caawinayo barnaamijkaaga, iyo awoodda lagu abuurayo tirooyin random ah, ha ahaato mid togan ama mid taban, shaki la'aan waa mid ka mid ah kuwa ugu faa'iidada badan. Fadlan ha ka waaban inaad isticmaasho halka ay khusayso.

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