ex04-01-1

ソース

// m以上n以下のランダムな整数を返す
function rand(m, n) {
  return m + Math.floor((n - m + 1)*Math.random());
}

// 「サイコロ」の目を表す文字列をランダムに返す
function randFace() {
  return ["crown", "anchor", "heart", "spade", "club", "diamond"]
  [rand(0, 5)];
}

let funds = 50; // 開始時の資金
let round = 0; // ラウンド（何回目の賭けか）

while(funds > 0 && funds < 100) {
  round++;
  console.log(`第${round}ラウンド: `);
  console.log(`  手持ち資金: ${funds}`);

  // 賭ける
  let bets = { crown: 0, anchor: 0, heart: 0,
               spade: 0, club: 0, diamond: 0 };
  let totalBet = rand(1, funds);
  if(totalBet === 7) { // 全部賭ける
    totalBet = funds;
    bets.heart = totalBet;
  } else { // 賭け金を振り分ける
    let remaining = totalBet;
    do {
      let bet = rand(1, remaining);
      let face = randFace();
      bets[face] = bets[face] + bet;
      remaining = remaining - bet;
    } while(remaining > 0)
  }
  funds = funds - totalBet;
  console.log(`  賭け金: ${totalBet}（` +
         Object.keys(bets).map(face => `${face}: ${bets[face]}`).join(', ') +
         "）");

  // サイコロを振る
  const hand = [];
  for(let roll = 0; roll < 3; roll++) {
    hand.push(randFace());
  }
  console.log(`  出目: ${hand.join(', ')}`);

  // 払戻金をもらう
  let winnings = 0;
  for(let die=0; die < hand.length; die++) {
    let face = hand[die];
    if(bets[face] > 0) winnings = winnings + bets[face];
  }
  funds = funds + winnings;
  console.log(`  払戻金: ${winnings}`);
}

console.log(`  残金: ${funds}`);
if (100 <= funds) console.log("意気揚々と船に戻る。\n");
else console.log("トボトボと船に帰る。\n");

ソース

// m以上n以下のランダムな整数を返す
function rand(m, n) {
  return m + Math.floor((n - m + 1)*Math.random());
}

// 「サイコロ」の目を表す文字列をランダムに返す
function randFace() {
  return ["crown", "anchor", "heart", "spade", "club", "diamond"]
  [rand(0, 5)];
}

let funds = 50; // 開始時の資金
let round = 0; // ラウンド（何回目の賭けか）

while(funds > 0 && funds < 100) {
  round++;
  console.log(`第${round}ラウンド: `);
  console.log(`  手持ち資金: ${funds}`);

  // 賭ける
  let bets = { crown: 0, anchor: 0, heart: 0,
               spade: 0, club: 0, diamond: 0 };
  let totalBet = rand(1, funds);
  if(totalBet === 7) { // 全部賭ける
    totalBet = funds;
    bets.heart = totalBet;
  } else { // 賭け金を振り分ける
    let remaining = totalBet;
    do {
      let bet = rand(1, remaining);
      let face = randFace();
      bets[face] = bets[face] + bet;
      remaining = remaining - bet;
    } while(remaining > 0)
  }
  funds = funds - totalBet;
  console.log(`  賭け金: ${totalBet}（` +
         Object.keys(bets).map(face => `${face}: ${bets[face]}`).join(', ') +
         "）");

  // サイコロを振る
  const hand = [];
  for(let roll = 0; roll < 3; roll++) {
    hand.push(randFace());
  }
  console.log(`  出目: ${hand.join(', ')}`);

  // 払戻金をもらう
  let winnings = 0;
  for(let die=0; die < hand.length; die++) {
    let face = hand[die];
    if(bets[face] > 0) winnings = winnings + bets[face];
  }
  funds = funds + winnings;
  console.log(`  払戻金: ${winnings}`);
}

console.log(`  残金: ${funds}`);
if (100 <= funds) console.log("意気揚々と船に戻る。\n");
else console.log("トボトボと船に帰る。\n");