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---
id: 5900f37d1000cf542c50fe90
title: 'Problem 17: Number letter counts'
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challengeType: 5
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forumTopicId: 301804
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dashedName: problem-17-number-letter-counts
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---
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# --description--
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If the numbers 1 to 5 are written out in words: one, two, three, four, five, then there are 3 + 3 + 5 + 4 + 4 = 19 letters used in total.
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If all the numbers from 1 to given `limit` inclusive were written out in words, how many letters would be used?
**Note:** Do not count spaces or hyphens. For example, 342 (three hundred and forty-two) contains 23 letters and 115 (one hundred and fifteen) contains 20 letters. The use of "and" when writing out numbers is in compliance with British usage.
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# --hints--
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`numberLetterCounts(5)` should return a number.
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```js
assert(typeof numberLetterCounts(5) === 'number');
```
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`numberLetterCounts(5)` should return 19.
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```js
assert.strictEqual(numberLetterCounts(5), 19);
```
`numberLetterCounts(150)` should return 1903.
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```js
assert.strictEqual(numberLetterCounts(150), 1903);
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```
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`numberLetterCounts(1000)` should return 21124.
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```js
assert.strictEqual(numberLetterCounts(1000), 21124);
```
# --seed--
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## --seed-contents--
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```js
function numberLetterCounts(limit) {
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return true;
}
numberLetterCounts(5);
```
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# --solutions--
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```js
function numberLetterCounts(limit) {
const dictionary = {
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0: '',
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1: 'one',
2: 'two',
3: 'three',
4: 'four',
5: 'five',
6: 'six',
7: 'seven',
8: 'eight',
9: 'nine',
10: 'ten',
11: 'eleven',
12: 'twelve',
13: 'thirteen',
14: 'fourteen',
15: 'fifteen',
16: 'sixteen',
17: 'seventeen',
18: 'eighteen',
19: 'nineteen',
20: 'twenty',
30: 'thirty',
40: 'forty',
50: 'fifty',
60: 'sixty',
70: 'seventy',
80: 'eighty',
90: 'ninety',
1000: 'onethousand'
};
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let numString = '';
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function convertToString(num) {
// check dictionary for number
if (dictionary[num]) {
return dictionary[num];
} else {
const hundreds = Math.floor(num / 100);
const tens = Math.floor((num / 10) % 10) * 10;
const remainder = num % 10;
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let tempStr = '';
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if (hundreds === 0) {
tempStr += dictionary[tens] + dictionary[remainder];
} else {
tempStr += dictionary[hundreds] + 'hundred';
if (tens !== 0 || remainder !== 0) {
tempStr += 'and';
}
if (tens < 20 ) {
const lessThanTwenty = tens + remainder;
tempStr += dictionary[lessThanTwenty];
} else {
tempStr += dictionary[tens] + dictionary[remainder];
}
}
return tempStr;
}
}
for (let i = 1; i < = limit; i++) {
numString += convertToString(i);
}
return numString.length;
}
```