Data commit

Task/Number-names/Python/number-names-1.py

@@ -0,0 +1,64 @@
+TENS = [None, None, "twenty", "thirty", "forty",
+        "fifty", "sixty", "seventy", "eighty", "ninety"]
+SMALL = ["zero", "one", "two", "three", "four", "five",
+         "six", "seven", "eight", "nine", "ten", "eleven",
+         "twelve", "thirteen", "fourteen", "fifteen",
+         "sixteen", "seventeen", "eighteen", "nineteen"]
+HUGE = [None, None] + [h + "illion"
+                       for h in ("m", "b", "tr", "quadr", "quint", "sext",
+                                  "sept", "oct", "non", "dec")]
+
+def nonzero(c, n, connect=''):
+    return "" if n == 0 else connect + c + spell_integer(n)
+
+def last_and(num):
+    if ',' in num:
+        pre, last = num.rsplit(',', 1)
+        if ' and ' not in last:
+            last = ' and' + last
+        num = ''.join([pre, ',', last])
+    return num
+
+def big(e, n):
+    if e == 0:
+        return spell_integer(n)
+    elif e == 1:
+        return spell_integer(n) + " thousand"
+    else:
+        return spell_integer(n) + " " + HUGE[e]
+
+def base1000_rev(n):
+    # generates the value of the digits of n in base 1000
+    # (i.e. 3-digit chunks), in reverse.
+    while n != 0:
+        n, r = divmod(n, 1000)
+        yield r
+
+def spell_integer(n):
+    if n < 0:
+        return "minus " + spell_integer(-n)
+    elif n < 20:
+        return SMALL[n]
+    elif n < 100:
+        a, b = divmod(n, 10)
+        return TENS[a] + nonzero("-", b)
+    elif n < 1000:
+        a, b = divmod(n, 100)
+        return SMALL[a] + " hundred" + nonzero(" ", b, ' and')
+    else:
+        num = ", ".join([big(e, x) for e, x in
+                         enumerate(base1000_rev(n)) if x][::-1])
+        return last_and(num)
+
+if __name__ == '__main__':
+    # examples
+    for n in (0, -3, 5, -7, 11, -13, 17, -19, 23, -29):
+        print('%+4i -> %s' % (n, spell_integer(n)))
+    print('')
+
+    n = 201021002001
+    while n:
+        print('%-12i -> %s' % (n, spell_integer(n)))
+        n //= -10
+    print('%-12i -> %s' % (n, spell_integer(n)))
+    print('')

Task/Number-names/Python/number-names-2.py

@@ -0,0 +1,49 @@
+def int_to_english(n):
+    if n < 0: return "minus " + int_to_english(-n)
+    if n < 10:
+        return ["zero", "one", "two", "three", "four", "five",
+                "six", "seven", "eight", "nine"][n]
+    if n < 20:
+        return ["ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen",
+                "sixteen", "seventeen", "eighteen", "nineteen"][n-10]
+    if n < 100:
+        tens = ["twenty", "thirty", "forty", "fifty", "sixty",
+                "seventy", "eighty", "ninety"][(n // 10 - 2)%10]
+        if n % 10 != 0:
+            return tens + "-" + int_to_english(n % 10)
+        else:
+            return tens
+    if n < 1000:
+        if n % 100 == 0:
+            return int_to_english(n // 100) + " hundred"
+        else:
+            return int_to_english(n // 100) + " hundred and " +\
+               int_to_english(n % 100)
+    # http://www.isthe.com/chongo/tech/math/number/tenpower.html
+    powers = [("thousand", 3), ("million", 6),
+              ("billion", 9), ("trillion", 12), ("quadrillion", 15),
+              ("quintillion", 18), ("sextillion", 21), ("septillion", 24),
+              ("octillion", 27), ("nonillion", 30), ("decillion", 33),
+              ("undecillion", 36), ("duodecillion", 39), ("tredecillion", 42),
+              ("quattuordecillion", 45), ("quindecillion", 48),
+              ("sexdecillion", 51), ("eptendecillion", 54),
+              ("octadecillion", 57), ("novemdecillion", 61),
+              ("vigintillion", 64)]
+    ns = str(n)
+    idx = len(powers) - 1
+    while True:
+        d = powers[idx][1]
+        if len(ns) > d:
+            first = int_to_english(int(ns[:-d]))
+            second = int_to_english(int(ns[-d:]))
+            if second == "zero":
+                return first + " " + powers[idx][0]
+            else:
+                return first + " " + powers[idx][0] + " " + second
+        idx = idx - 1
+
+if __name__ == "__main__":
+    print(int_to_english(42))
+    print(int_to_english(3 ** 7))
+    print(int_to_english(2 ** 100))
+    print(int_to_english(10 ** (2*64)))