initial commit

2026-07-12 02:18:43 +03:00
parent bdb097756e
commit 3055b785be
8 changed files with 1694 additions and 0 deletions
@@ -0,0 +1,221 @@
+export const SYSTEMS = {
+  binary: {
+    name: 'Binary',
+    short: 'BIN',
+    toDisplay: (n) => n.toString(2),
+  },
+  octal: {
+    name: 'Octal',
+    short: 'OCT',
+    toDisplay: (n) => n.toString(8),
+  },
+  hex: {
+    name: 'Hexadecimal',
+    short: 'HEX',
+    toDisplay: (n) => n.toString(16).toUpperCase(),
+  },
+  ternary: {
+    name: 'Balanced Ternary',
+    short: 'BT3',
+    toDisplay: toBalTernary,
+  },
+  braille: {
+    name: 'Braille Decimal',
+    short: 'BRL',
+    toDisplay: toBraille,
+  },
+  roman: {
+    name: 'Roman',
+    short: 'ROM',
+    toDisplay: toRoman,
+  },
+  slavonic: {
+    name: 'Church Slavonic',
+    short: 'SLV',
+    toDisplay: toSlavonic,
+  },
+  greek: {
+    name: 'Greek',
+    short: 'GRK',
+    toDisplay: toGreek,
+  },
+  hebrew: {
+    name: 'Hebrew',
+    short: 'HEB',
+    toDisplay: toHebrew,
+  },
+};
+
+function toRoman(num) {
+  if (num <= 0 || num > 3999) return String(num);
+  const vals = [1000,900,500,400,100,90,50,40,10,9,5,4,1];
+  const syms = ['M','CM','D','CD','C','XC','L','XL','X','IX','V','IV','I'];
+  let result = '';
+  for (let i = 0; i < vals.length; i++) {
+    while (num >= vals[i]) {
+      result += syms[i];
+      num -= vals[i];
+    }
+  }
+  return result;
+}
+
+function toBalTernary(num) {
+  if (num === 0) return '0';
+
+  let sign = 1;
+  let n = num;
+  if (n < 0) {
+    sign = -1;
+    n = -n;
+  }
+
+  const digits = [];
+  while (n > 0) {
+    let rem = n % 3;
+    n = Math.floor(n / 3);
+    if (rem === 2) {
+      digits.unshift('\u2296');
+      n += 1;
+    } else if (rem === 1) {
+      digits.unshift('\u2295');
+    } else {
+      digits.unshift('0');
+    }
+  }
+
+  if (sign === -1) {
+    return digits.map(d => {
+      if (d === '\u2295') return '\u2296';
+      if (d === '\u2296') return '\u2295';
+      return d;
+    }).join('');
+  }
+
+  return digits.join('');
+}
+
+const BRAILLE_NUMS = ['\u281A','\u2801','\u2803','\u2809','\u2819','\u2811','\u280B','\u281B','\u2813','\u280A'];
+const BRAILLE_HASH = '\u283C';
+
+function toBraille(num) {
+  if (num < 0) return String(num);
+  if (num === 0) return BRAILLE_HASH + BRAILLE_NUMS[0];
+  return BRAILLE_HASH + String(num).split('').map(d => BRAILLE_NUMS[parseInt(d)]).join('');
+}
+
+const GRK_UNITS = ['\u03B1','\u03B2','\u03B3','\u03B4','\u03B5','\u03DB','\u03B6','\u03B7','\u03B8'];
+const GRK_TENS = ['\u03B9','\u03BA','\u03BB','\u03BC','\u03BD','\u03BE','\u03BF','\u03C0','\u03DF'];
+const GRK_HUNDREDS = ['\u03C1','\u03C3','\u03C4','\u03C5','\u03C6','\u03C7','\u03C8','\u03C9','\u03E1'];
+const GRK_THOU = '\u0375';
+const GRK_KER = '\u1FFD';
+
+function toGreek(num) {
+  if (num <= 0 || num > 9999) return String(num);
+  let result = '';
+  const thou = Math.floor(num / 1000);
+  num %= 1000;
+  const h = Math.floor(num / 100);
+  num %= 100;
+  const t = Math.floor(num / 10);
+  const u = num % 10;
+  if (thou > 0) result += GRK_THOU + GRK_UNITS[thou - 1];
+  if (h > 0) result += GRK_HUNDREDS[h - 1];
+  if (t > 0) result += GRK_TENS[t - 1];
+  if (u > 0) result += GRK_UNITS[u - 1];
+  return result ? result + GRK_KER : '0';
+}
+
+const SLV_UNITS = ['а','в','г','д','є','ѕ','з','и','ѳ'];
+const SLV_TENS = ['і','к','л','м','н','ѯ','ѻ','п','ч'];
+const SLV_HUNDREDS = ['р','с','т','у','ф','х','ѱ','ѿ','ц'];
+const SLV_THOU = '\u0482';
+const SLV_TITLO = '\u0483';
+
+function toSlavonic(num) {
+  if (num <= 0 || num > 9999) return String(num);
+
+  const groups = [];
+  const thou = Math.floor(num / 1000);
+  num %= 1000;
+  const h = Math.floor(num / 100);
+  num %= 100;
+  const t = Math.floor(num / 10);
+  const u = num % 10;
+
+  if (thou > 0) groups.push({ p: SLV_THOU, l: SLV_UNITS[thou - 1] });
+
+  if (h > 0) groups.push({ p: '', l: SLV_HUNDREDS[h - 1] });
+
+  const twoDigit = t * 10 + u;
+  if (twoDigit >= 11 && twoDigit <= 19) {
+    if (u > 0) groups.push({ p: '', l: SLV_UNITS[u - 1] });
+    if (t > 0) groups.push({ p: '', l: SLV_TENS[t - 1] });
+  } else {
+    if (t > 0) groups.push({ p: '', l: SLV_TENS[t - 1] });
+    if (u > 0) groups.push({ p: '', l: SLV_UNITS[u - 1] });
+  }
+
+  if (groups.length === 0) return '0';
+
+  const titloIdx = groups.length >= 2 ? groups.length - 2 : 0;
+  groups[titloIdx].l += SLV_TITLO;
+
+  return groups.map(g => g.p + g.l).join('') + '.';
+}
+
+const HEB_UNITS = ['\u05D0','\u05D1','\u05D2','\u05D3','\u05D4','\u05D5','\u05D6','\u05D7','\u05D8'];
+const HEB_TENS = ['\u05D9','\u05DB','\u05DC','\u05DE','\u05E0','\u05E1','\u05E2','\u05E4','\u05E6'];
+const HEB_HUNDREDS = ['\u05E7','\u05E8','\u05E9','\u05EA'];
+const HEB_GERESH = '\u05F3';
+const HEB_GERSHAYIM = '\u05F4';
+
+function toHebrew(num) {
+  if (num <= 0 || num > 499) return String(num);
+
+  if (num === 15) return '\u05D8' + HEB_GERSHAYIM + '\u05D5';
+  if (num === 16) return '\u05D8' + HEB_GERSHAYIM + '\u05D6';
+
+  const letters = [];
+  const h = Math.floor(num / 100);
+  num %= 100;
+  const t = Math.floor(num / 10);
+  const u = num % 10;
+
+  if (h > 0) letters.push(HEB_HUNDREDS[h - 1]);
+  if (t > 0) letters.push(HEB_TENS[t - 1]);
+  if (u > 0) letters.push(HEB_UNITS[u - 1]);
+
+  if (letters.length === 0) return '0';
+  if (letters.length === 1) return letters[0] + HEB_GERESH;
+  return letters.slice(0, -1).join('') + HEB_GERSHAYIM + letters[letters.length - 1];
+}
+
+export function generateChoices(correctAnswer, allRanges, count = 3) {
+  const choices = new Set([correctAnswer]);
+  const [min, max] = allRanges;
+  let attempts = 0;
+  while (choices.size < count && attempts < 100) {
+    let wrong;
+    const offset = Math.floor(Math.random() * 20) + 1;
+    if (Math.random() < 0.5) {
+      wrong = correctAnswer + offset;
+    } else {
+      wrong = correctAnswer - offset;
+    }
+    if (wrong >= min && wrong <= max && wrong !== correctAnswer) {
+      choices.add(wrong);
+    }
+    attempts++;
+  }
+  while (choices.size < count) {
+    const r = min + Math.floor(Math.random() * (max - min + 1));
+    choices.add(r);
+  }
+  const arr = Array.from(choices);
+  for (let i = arr.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+    [arr[i], arr[j]] = [arr[j], arr[i]];
+  }
+  return arr;
+}