added ternary (non-ballanced) and extended hebrew ranges

app.js

@@ -37,7 +37,7 @@ const STRINGS = {
     chooseAnswer: 'Choose answer',
     enterEquivalent: 'Enter equivalent',
     systemNames: {
-      binary: 'Binary', octal: 'Octal', hex: 'Hexadecimal',
+      binary: 'Binary', base3: 'Ternary', octal: 'Octal', hex: 'Hexadecimal',
       ternary: 'Balanced Ternary', braille: 'Braille Decimal',
       roman: 'Roman', slavonic: 'Church Slavonic',
       greek: 'Greek', hebrew: 'Hebrew',
@@ -78,9 +78,10 @@ const STRINGS = {
     enterEquivalent: '\u0412\u0432\u0435\u0434\u0438\u0442\u0435 \u0447\u0438\u0441\u043B\u043E',
     systemNames: {
       binary: '\u0414\u0432\u043E\u0438\u0447\u043D\u0430\u044F',
+      base3: '\u0422\u0440\u043E\u0438\u0447\u043D\u0430\u044F',
       octal: '\u0412\u043E\u0441\u044C\u043C\u0435\u0440\u0438\u0447\u043D\u0430\u044F',
       hex: '\u0428\u0435\u0441\u0442\u043D\u0430\u0434\u0446\u0430\u0442\u0435\u0440\u0438\u0447\u043D\u0430\u044F',
-      ternary: '\u0423\u0440\u0430\u0432\u043D\u043E\u0432\u0435\u0448\u0435\u043D\u043D\u0430\u044F \u0442\u0440\u043E\u0438\u0447\u043D\u0430\u044F',
+      ternary: '\u0421\u0438\u043C\u043C\u0435\u0442\u0440\u0438\u0447\u043D\u0430\u044F \u0442\u0440\u043E\u0438\u0447\u043D\u0430\u044F',
       braille: '\u0414\u0435\u0441\u044F\u0442\u0438\u0447\u043D\u0430\u044F \u0411\u0440\u0430\u0439\u043B\u044F',
       roman: '\u0420\u0438\u043C\u0441\u043A\u0430\u044F',
       slavonic: '\u0426\u0435\u0440\u043A\u043E\u0432\u043D\u043E\u0441\u043B\u0430\u0432\u044F\u043D\u0441\u043A\u0430\u044F',
@@ -117,6 +118,12 @@ const SYSTEM_RANGES = {
     { label: '2\u2070 \u2013 2\u2077', min: 1, max: 128 },
     { label: '2\u2070 \u2013 2\u00B9\u2075', min: 1, max: 32768 },
   ],
+  base3: [
+    { label: '3\u2070 \u2013 3\u00B9', min: 1, max: 3 },
+    { label: '3\u00B9 \u2013 3\u00B2', min: 3, max: 9 },
+    { label: '3\u00B2 \u2013 3\u00B3', min: 9, max: 27 },
+    { label: '3\u2070 \u2013 3\u00B3', min: 1, max: 27 },
+  ],
   ternary: [
     { label: '3\u2070 \u2013 3\u00B9', min: 1, max: 3 },
     { label: '\u20133\u00B9 \u2013 3\u00B9', min: -3, max: 3 },
@@ -168,12 +175,13 @@ const SYSTEM_RANGES = {
     { label: '10 \u2013 19', min: 10, max: 19 },
     { label: '20 \u2013 99', min: 20, max: 99 },
     { label: '1 \u2013 99', min: 1, max: 99 },
-    { label: '100 \u2013 499', min: 100, max: 499 },
+    { label: '100 \u2013 999', min: 100, max: 999 },
+    { label: '1000 \u2013 9999', min: 1000, max: 9999 },
   ],
 };
 
 const SYSTEM_GROUPS = {
-  pos: ['binary', 'octal', 'hex', 'ternary', 'braille'],
+  pos: ['binary', 'octal', 'hex', 'braille', 'base3', 'ternary'],
   nonpos: ['roman', 'greek', 'slavonic', 'hebrew'],
 };
 
@@ -706,6 +714,7 @@ const TICKER_COLORS = isLightTheme ? TICKER_COLORS_LIGHT : TICKER_COLORS_DARK;
 
 const TICKER_SYSTEMS = [
   { key: 'binary',    min: 1,   max: 255,  suffix: toSubscript(2) },
+  { key: 'base3',     min: 1,   max: 81,   suffix: toSubscript(3) },
   { key: 'octal',     min: 1,   max: 511,  suffix: toSubscript(8) },
   { key: 'hex',       min: 1,   max: 255,  prefix: '0x' },
   { key: 'ternary',   min: 1,   max: 27,   suffix: toSubscript(3) },

numerals.js

@@ -14,6 +14,11 @@ export const SYSTEMS = {
     short: 'HEX',
     toDisplay: (n) => n.toString(16).toUpperCase(),
   },
+  base3: {
+    name: 'Ternary',
+    short: 'TER',
+    toDisplay: toBase3,
+  },
   ternary: {
     name: 'Balanced Ternary',
     short: 'BT3',
@@ -60,6 +65,17 @@ function toRoman(num) {
   return result;
 }
 
+function toBase3(num) {
+  if (num === 0) return '0';
+  let n = Math.abs(num);
+  let result = '';
+  while (n > 0) {
+    result = (n % 3) + result;
+    n = Math.floor(n / 3);
+  }
+  return num < 0 ? '-' + result : result;
+}
+
 function toBalTernary(num) {
   if (num === 0) return '0';
 
@@ -170,25 +186,53 @@ const HEB_HUNDREDS = ['\u05E7','\u05E8','\u05E9','\u05EA'];
 const HEB_GERESH = '\u05F3';
 const HEB_GERSHAYIM = '\u05F4';
 
-function toHebrew(num) {
+function toHebrewLetters(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 (h === 4) {
-  if (t > 0) letters.push(HEB_TENS[t - 1]);
+    letters.push(HEB_HUNDREDS[3]);
-  if (u > 0) letters.push(HEB_UNITS[u - 1]);
+    if (t > 0) letters.push(HEB_TENS[t - 1]);
+    if (u > 0) letters.push(HEB_UNITS[u - 1]);
+  } else if (h >= 5) {
+    letters.push(HEB_HUNDREDS[3]);
+    const extra = h - 4;
+    if (extra > 0) letters.push(HEB_HUNDREDS[extra - 1]);
+    if (t > 0) letters.push(HEB_TENS[t - 1]);
+    if (u > 0) letters.push(HEB_UNITS[u - 1]);
+  } else {
+    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]);
+  }
+  return letters;
+}
 
-  if (letters.length === 0) return '0';
+function toHebrew(num) {
-  if (letters.length === 1) return letters[0] + HEB_GERESH;
+  if (num <= 0 || num > 9999) return String(num);
-  return letters.slice(0, -1).join('') + HEB_GERSHAYIM + letters[letters.length - 1];
+
+  if (num === 15) return '\u05D8' + HEB_GERSHAYIM + '\u05D5';
+  if (num === 16) return '\u05D8' + HEB_GERSHAYIM + '\u05D6';
+
+  const thousands = Math.floor(num / 1000);
+  const rest = num % 1000;
+
+  if (thousands > 0 && rest === 0) {
+    return HEB_UNITS[thousands - 1] + HEB_GERESH;
+  }
+
+  let result = '';
+  if (thousands > 0) {
+    result = HEB_UNITS[thousands - 1] + HEB_GERESH;
+  }
+
+  const letters = toHebrewLetters(rest);
+  if (letters.length === 0) return result;
+  if (letters.length === 1) return result + letters[0] + HEB_GERESH;
+  return result + letters.slice(0, -1).join('') + HEB_GERSHAYIM + letters[letters.length - 1];
 }
 
 export function generateChoices(correctAnswer, allRanges, count = 3, matchLastDigit = false) {