Number To Word in Typescript + Fastest (Hindi, Indian, International)

ntw.ts

class N2WHindi {
  // "शून्य"
  private static readonly zeroTo99: string[] =
    '|एक|दो|तीन|चार|पाँच|छः|सात|आठ|नौ|दश|ग्यारह|बारह|तेरह|चौदह|पन्द्रह|सोलह|सत्रह|अठारह|उन्नीस|बीस|इक्कीस|बाईस|तेईस|चौबीस|पच्चीस|छब्बीस|सत्ताईस|अट्ठाईस|उनतीस|तीस|इकतीस|बत्तीस|तैंतीस|चौंतीस|पैंतीस|छत्तीस|सैंतीस|अड़तीस|उनतालीस|चालीस|इकतालीस|बयालीस|तैंतालीस|चौवालीस|पैंतालीस|छियालीस|सैंतालीस|अड़तालीस|उनचास|पचास|इक्यावन|बावन|तिरपन|चौवन|पचपन|छप्पन|सत्तावन|अट्ठावन|उनसठ|साठ|इकसठ|बासठ|तिरसठ|चौंसठ|पैंसठ|छियासठ|सड़सठ|अड़सठ|उनहत्तर|सत्तर|इकहत्तर|बहत्तर|तिहत्तर|चौहत्तर|पचहत्तर|छिहत्तर|सतहत्तर|अठहत्तर|उन्यासी|अस्सी|इक्यासी|बयासी|तिरासी|चौरासी|पचासी|छियासी|सत्तासी|अट्ठासी|नवासी|नब्बे|इक्यानबे|बानबे|तिरानबे|चौरानबे|पंचानबे|छियानबे|सत्तानबे|अट्ठानबे|निन्यान्बे'.split(
      '|'
    );

  private static readonly place: string[] = 'हज़ार|लाख|करोड़|अरब|खरब|नील'.split('|');

  public static convert(x: string): string {
    let n: number = x.length;
    x = n == 0 ? '00' : n == 1 || n % 2 == 0 ? '0' + x : x;
    n = x.length;
    let r: string = N2WHindi.zeroTo99[x.charCodeAt((n -= 2)) * 10 + x.charCodeAt(n + 1) - 528];
    if (n > 0) {
      const v: string = N2WHindi.zeroTo99[x.charCodeAt((n -= 1)) - 48];
      if (v) {
        r = v + ' सौ ' + r;
      }
    }
    for (let i = 0; n > 0; i++) {
      const v: string = N2WHindi.zeroTo99[x.charCodeAt((n -= 2)) * 10 + x.charCodeAt(n + 1) - 528];
      if (v) {
        r = v + ' ' + N2WHindi.place[i] + ' ' + r;
      }
    }
    return r;
  }
}

class N2WIndian {
  private static readonly zeroTo99: string[] = [];
  private static readonly place: string[] = 'Thousand|Lakh|Crore|Arab|Kharab|Nil'.split('|');

  static {
    const ones: string[] =
      '|One|Two|Three|Four|Five|Six|Seven|Eight|Nine|Ten|Eleven|Twelve|Thirteen|Fourteen|Fifteen|Sixteen|Seventeen|Eighteen|Nineteen'.split(
        '|'
      );

    const tens: string[] = '||Twenty|Thirty|Forty|Fifty|Sixty|Seventy|Eighty|Ninety'.split('|');

    for (let i = 0; i < 100; i++) {
      const t: number = Math.floor(i / 10);
      const o: number = i % 10;
      N2WIndian.zeroTo99.push(t < 2 ? ones[i] : tens[t] + (o ? ' ' + ones[o] : ''));
    }
  }

  public static convert(x: string): string {
    let n: number = x.length;
    x = n == 0 ? '00' : n == 1 || n % 2 == 0 ? '0' + x : x;
    n = x.length;
    let r = N2WIndian.zeroTo99[x.charCodeAt((n -= 2)) * 10 + x.charCodeAt(n + 1) - 528];
    if (n >= 1) {
      const v: string = N2WIndian.zeroTo99[x.charCodeAt((n -= 1)) - 48];
      if (v) {
        r = v + ' Hundred ' + r;
      }
    }
    for (let i = 0; n > 0; i++) {
      const v: string = N2WIndian.zeroTo99[x.charCodeAt((n -= 2)) * 10 + x.charCodeAt(n + 1) - 528];
      if (v) {
        r = v + ' ' + N2WIndian.place[i] + ' ' + r;
      }
    }
    return r;
  }
}

class N2WIntl {
  private static readonly zeroTo999: string[] = [];

  private static readonly place =
    '|Thousand|Million|Billion|Trillion|Quadrillion|Quintillion|Sextillion|Septillion|Octillion|Nonillion|Decillion|Undecillion|Duodecillion|Tredecillion|Quattuordecillion|Quindecillion|Sedecillion|Septendecillion|Octodecillion|Novendecillion|Vigintillion|Unvigintillion|Duovigintillion|Tresvigintillion|Quattuorvigintillion|Quinvigintillion|Sesvigintillion|Septemvigintillion|Octovigintillion|Novemvigintillion|Trigintillion|Untrigintillion|Duotrigintillion|Trestrigintillion|Quattuortrigintillion|Quintrigintillion|Sestrigintillion|Septentrigintillion|Octotrigintillion|Noventrigintillion|Quadragintillion'.split(
      '|'
    );

  static {
    const ones =
      '|One|Two|Three|Four|Five|Six|Seven|Eight|Nine|Ten|Eleven|Twelve|Thirteen|Fourteen|Fifteen|Sixteen|Seventeen|Eighteen|Nineteen'.split(
        '|'
      );
    const tens = '||Twenty|Thirty|Forty|Fifty|Sixty|Seventy|Eighty|Ninety'.split('|');
    for (let i = 0; i < 100; i++) {
      const t = Math.floor(i / 10);
      const o = i % 10;
      N2WIntl.zeroTo999[i] = t < 2 ? ones[i] : tens[t] + (o == 0 ? '' : ' ' + ones[o]);
    }
    for (let i = 100; i < 1000; i++) {
      const h = Math.floor(i / 100);
      const t = Math.floor(i / 10) % 10;
      const o = i % 10;
      const r = N2WIntl.zeroTo999[h] + ' Hundred';
      N2WIntl.zeroTo999[i] = t == 0 && o == 0 ? r : r + ' ' + N2WIntl.zeroTo999[t * 10 + o];
    }
  }

  public static convert(x: string): string {
    let n = x.length;
    x = n == 0 ? '000' : '0'.repeat((3 - (n % 3)) % 3) + x;
    n = x.length;
    let r: string = '';
    for (let i = 0; n > 0; i++) {
      const v: string =
        N2WIntl.zeroTo999[x.charCodeAt((n -= 3)) * 100 + x.charCodeAt(n + 1) * 10 + x.charCodeAt(n + 2) - 5328];
      if (v) {
        r = v + ' ' + N2WIntl.place[i] + ' ' + r;
      }
    }
    return r;
  }
}

const test = () => {
  {
    let n = 5000000;
    const test: string = '1234567890';
    const t0 = performance.now();
    while (n-- > 0) {
      N2WHindi.convert(test);
    }
    const t1 = performance.now();
    console.log('1234567890 to 5 Million times: ' + (t1 - t0) + 'ms');
    console.log('10^16 -1 :\n' + '9'.repeat(15) + '\n' + N2WHindi.convert('9'.repeat(15)));
  }

  {
    let n = 5000000;
    const test: string = '1234567890';
    const t0 = performance.now();
    while (n-- > 0) {
      N2WIndian.convert(test);
    }
    const t1 = performance.now();
    console.log('1234567890 to 5 Million times: ' + (t1 - t0) + 'ms');
    console.log('10^16 -1 :\n' + '9'.repeat(15) + '\n' + N2WIndian.convert('9'.repeat(15)));
  }

  {
    let n = 5000000;
    const test: string = '1234567890';
    const t0 = performance.now();
    while (n-- > 0) {
      N2WIntl.convert(test);
    }
    const t1 = performance.now();
    console.log('1234567890 to 5 Million times: ' + (t1 - t0) + 'ms');
    console.log('10^127 -1 :\n' + '9'.repeat(126) + '\n' + N2WIntl.convert('9'.repeat(126)));
  }
};

test();