solved challenge 6 in challenge section

Challenge questions/shubham2704/challenge6/README.md

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+solving challenge 6 in challenge section

Challenge questions/shubham2704/challenge6/num2words.py

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+def numToWords(num,join=True):
+    '''words = {} convert an integer number into words'''
+    units = ['','one','two','three','four','five','six','seven','eight','nine']
+    teens = ['','eleven','twelve','thirteen','fourteen','fifteen','sixteen', \
+             'seventeen','eighteen','nineteen']
+    tens = ['','ten','twenty','thirty','forty','fifty','sixty','seventy', \
+            'eighty','ninety']
+    thousands = ['','thousand','million','billion','trillion','quadrillion', \
+                 'quintillion','sextillion','septillion','octillion', \
+                 'nonillion','decillion','undecillion','duodecillion', \
+                 'tredecillion','quattuordecillion','sexdecillion', \
+                 'septendecillion','octodecillion','novemdecillion', \
+                 'vigintillion']
+    words = []
+    if num==0: words.append('zero')
+    else:
+        numStr = '%d'%num
+        numStrLen = len(numStr)
+        groups = (numStrLen+2)/3
+        numStr = numStr.zfill(groups*3)
+        for i in range(0,groups*3,3):
+            h,t,u = int(numStr[i]),int(numStr[i+1]),int(numStr[i+2])
+            g = groups-(i/3+1)
+            if h>=1:
+                words.append(units[h])
+                words.append('hundred')
+            if t>1:
+                words.append(tens[t])
+                if u>=1: words.append(units[u])
+            elif t==1:
+                if u>=1: words.append(teens[u])
+                else: words.append(tens[t])
+            else:
+                if u>=1: words.append(units[u])
+            if (g>=1) and ((h+t+u)>0): words.append(thousands[g]+',')
+    if join: return ' '.join(words)
+    return words
+
+
+print(numToWords(0))
+print(numToWords(11))

Challenge questions/shubham2704/challenge6/textToNum.py

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+def text2num (textnum, numwords={}):
+    if not numwords:
+        units = [
+        "zero", "one", "two", "three", "four", "five", "six", "seven", "eight",
+        "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen",
+        "sixteen", "seventeen", "eighteen", "nineteen",
+        ]
+
+        tens = ["", "", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"]
+
+        scales = ["hundred", "thousand", "million", "billion", "trillion"]
+
+        numwords["and"] = (1, 0)
+        for idx, word in enumerate(units):  numwords[word] = (1, idx)
+        for idx, word in enumerate(tens):       numwords[word] = (1, idx * 10)
+        for idx, word in enumerate(scales): numwords[word] = (10 ** (idx * 3 or 2), 0)
+
+    ordinal_words = {'first':1, 'second':2, 'third':3, 'fifth':5, 'eighth':8, 'ninth':9, 'twelfth':12}
+    ordinal_endings = [('ieth', 'y'), ('th', '')]
+
+    textnum = textnum.replace('-', ' ')
+
+    current = result = 0
+    curstring = ""
+    onnumber = False
+    for word in textnum.split():
+        if word in ordinal_words:
+            scale, increment = (1, ordinal_words[word])
+            current = current * scale + increment
+            if scale > 100:
+                result += current
+                current = 0
+            onnumber = True
+        else:
+            for ending, replacement in ordinal_endings:
+                if word.endswith(ending):
+                    word = "%s%s" % (word[:-len(ending)], replacement)
+
+            if word not in numwords:
+                if onnumber:
+                    curstring += repr(result + current) + " "
+                curstring += word + " "
+                result = current = 0
+                onnumber = False
+            else:
+                scale, increment = numwords[word]
+
+                current = current * scale + increment
+                if scale > 100:
+                    result += current
+                    current = 0
+                onnumber = True
+
+    if onnumber:
+        curstring += repr(result + current)
+
+    return curstring
+
+print(text2num("one two three"))
+print(text2num("five forty five"))
+print(text2num("there are seven wonders and nine planets"))
+