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Genera una tabella della Tombola in JavaScript
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class RandTools { | |
// Inizializza l'array interno sequenzialmente con interi | |
distRandInit (end, start = 0) { | |
this.dist_rand = []; | |
for (var i = start; i < end; i++) { | |
this.dist_rand.push(i); | |
} | |
} | |
// Ottiene casualmente un elemento dall'array e lo rimuove | |
distRandNext () { | |
return this.dist_rand.splice(Math.floor(Math.random() * this.dist_rand.length), 1)[0]; | |
} | |
} | |
const tools = new RandTools(); | |
const extract_pool = []; | |
var card = [[], [], []]; | |
// Inizializzo un array per colonna | |
for (var i = 0; i < 9; i++) { | |
extract_pool[i] = new RandTools(); | |
extract_pool[i].distRandInit((i * 10) + 11, (i * 10) + 1); | |
} | |
// Estrazione per ogni riga | |
for (var i = 0; i < 9; i++) { | |
card[0].push(extract_pool[i].distRandNext()); | |
card[1].push(extract_pool[i].distRandNext()); | |
card[2].push(extract_pool[i].distRandNext()); | |
} | |
// Buco la prima riga | |
tools.distRandInit(9); | |
for (var i = 0; i < 4; i++) card[0][tools.distRandNext()] = -1; | |
// Buco la seconda riga | |
tools.distRandInit(9); | |
for (var i = 0; i < 4; i++) card[1][tools.distRandNext()] = -1; | |
// Buco la terza riga in funzione delle righe | |
// precendenti (ogni colonna deve avere almeno un numero) | |
tools.distRandInit(9); | |
var buchi = 0; | |
while (buchi < 4) { | |
const hit = tools.distRandNext(); | |
if (card[0][hit] != -1 || card[1][hit] != -1) { | |
card[2][hit] = -1; | |
buchi++; | |
} | |
} | |
// La variabile card contiene la cartella generata, | |
// contiene "-1" negli spazi vuoti | |
console.log(card); |
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