Created
August 29, 2019 02:10
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Words to Num
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const wordsToNumMap = { | |
zero: 0, | |
one: 1, | |
two: 2, | |
three: 3, | |
four: 4, | |
five: 5, | |
six: 6, | |
seven: 7, | |
eight: 8, | |
nine: 9, | |
ten: 10, | |
eleven: 11, | |
twelve: 12, | |
thirteen: 13, | |
fourteen: 14, | |
fifteen: 15, | |
sixteen: 16, | |
seventeen: 17, | |
eighteen: 18, | |
nineteen: 19, | |
twenty: 20, | |
thirty: 30, | |
fourty: 40, | |
fifty: 50, | |
sixty: 60, | |
seventy: 70, | |
eighty: 80, | |
ninety: 90, | |
hundred: 100, | |
thousand: 1e3, | |
million: 1e6, | |
billion: 1e9, | |
trillion: 1e12, | |
}; | |
function wordsToNum(str) { | |
console.info(str); | |
const nums = str | |
.trim() | |
.replace(/[^a-zA-Z ]/g, ``) | |
.split(/\s+/) | |
.map(word => wordsToNumMap[word]); | |
let result = 0; | |
let segmentResult = 0; | |
for (const num of nums) { | |
if (num < 100) { | |
segmentResult += num; | |
} else if (num === 100) { | |
segmentResult *= num; | |
} else { | |
result += segmentResult * num; | |
segmentResult = 0; | |
} | |
} | |
result += segmentResult; | |
console.info(result.toLocaleString()); | |
} | |
wordsToNum(` | |
one billion, | |
two hundred thirty four million, | |
five hundred sixty seven thousand, | |
eight hundred ninety | |
`); | |
wordsToNum(`one billion six hundred thousand fourty four`); |
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