ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
90 lines
1.5 KiB
Markdown
90 lines
1.5 KiB
Markdown
---
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id: 5a23c84252665b21eecc803f
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title: Sum digits of an integer
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challengeType: 5
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forumTopicId: 302331
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dashedName: sum-digits-of-an-integer
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---
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# --description--
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Write a function that takes a string as a parameter. This string represents a number that can be in any base (less than 37) and return the sum of its digits.
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<ul>
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<li><b>1</b><sub>10</sub> sums to <b>1</b></li>
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<li><b>1234</b><sub>10</sub> sums to <b>10</b></li>
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<li><b>fe</b><sub>16</sub> sums to <b>29</b></li>
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<li><b>f0e</b><sub>16</sub> sums to <b>29</b></li>
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</ul>
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# --hints--
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`sumDigits` should be a function.
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```js
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assert(typeof sumDigits == 'function');
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```
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`sumDigits("1")` should return a number.
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```js
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assert(typeof sumDigits('1') == 'number');
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```
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`sumDigits("1")` should return `1`.
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```js
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assert.equal(sumDigits('1'), 1);
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```
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`sumDigits("12345")` should return `15`.
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```js
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assert.equal(sumDigits('12345'), 15);
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```
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`sumDigits("254")` should return `11`.
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```js
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assert.equal(sumDigits('254'), 11);
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```
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`sumDigits("fe")` should return `29`.
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```js
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assert.equal(sumDigits('fe'), 29);
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```
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`sumDigits("f0e")` should return `29`.
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```js
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assert.equal(sumDigits('f0e'), 29);
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```
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`sumDigits("999ABCXYZ")` should return `162`.
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```js
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assert.equal(sumDigits('999ABCXYZ'), 162);
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```
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# --seed--
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## --seed-contents--
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```js
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function sumDigits(n) {
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}
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```
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# --solutions--
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```js
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function sumDigits(n) {
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n += '';
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for (var s = 0, i = 0, e = n.length; i < e; i += 1)
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s += parseInt(n.charAt(i), 36);
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return s;
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}
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```
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