How Can We Efficiently Convert Number Words to Integers in Text?

Converting Number Words to Integers

Getting Numerical Representation from Text Form

Converting text representing numbers into their corresponding integers is a common task in various applications. How can this transformation be efficiently achieved?

Leveraging a Word-to-Integer Dictionary

One approach involves building a dictionary that maps number words to their numerical equivalents. This dictionary can serve as a lookup table for converting individual words to integers. The majority of the provided code is dedicated to initializing this dictionary (numwords).

Parsing and Converting the Text

To convert the entire text representation, the code splits the input into words. For each word, it looks up its corresponding integer value in the dictionary and incorporates it into the final integer. The code efficiently handles words representing units (e.g., "one", "two"), tens (e.g., "twenty", "ninety"), and scales (e.g., "hundred", "billion"). It recognizes "and" as a delimiter between individual numbers.

Handling Large Numbers

The code also considers the possibility of large numbers. If a word representing a scale (e.g., "hundred") is encountered, the current integer value is added to the result, starting a new cycle of accumulation. This allows the code to effectively represent numbers in the trillions or even beyond.

Example Usage

Here's an example that demonstrates the functionality of the code:

print text2int("seven billion one hundred million thirty one thousand three hundred thirty seven")
#7100031337

Output: The code accurately converts the given text representation into its integer equivalent, which is 7100031337.

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