100 lines
1.8 KiB
Markdown
100 lines
1.8 KiB
Markdown
---
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id: 5a23c84252665b21eecc7e7a
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title: Generate lower case ASCII alphabet
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challengeType: 5
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forumTopicId: 302274
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dashedName: generate-lower-case-ascii-alphabet
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---
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# --description--
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Write a function to generate an array of lower case ASCII characters for a given range. For example, given the range `['a', 'd']`, the function should return `['a', 'b', 'c', 'd']`.
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# --hints--
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`lascii` should be a function.
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```js
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assert(typeof lascii == 'function');
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```
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`lascii("a","d")` should return an array.
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```js
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assert(Array.isArray(lascii('a', 'd')));
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```
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`lascii('a','d')` should return `[ 'a', 'b', 'c', 'd' ]`.
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```js
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assert.deepEqual(lascii('a', 'd'), results[0]);
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```
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`lascii('c','i')` should return `[ 'c', 'd', 'e', 'f', 'g', 'h', 'i' ]`.
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```js
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assert.deepEqual(lascii('c', 'i'), results[1]);
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```
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`lascii('m','q')` should return `[ 'm', 'n', 'o', 'p', 'q' ]`.
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```js
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assert.deepEqual(lascii('m', 'q'), results[2]);
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```
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`lascii('k','n')` should return `[ 'k', 'l', 'm', 'n' ]`.
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```js
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assert.deepEqual(lascii('k', 'n'), results[3]);
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```
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`lascii('t','z')` should return `[ 't', 'u', 'v', 'w', 'x', 'y', 'z' ]`.
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```js
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assert.deepEqual(lascii('t', 'z'), results[4]);
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```
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# --seed--
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## --after-user-code--
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```js
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let results=[
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[ 'a', 'b', 'c', 'd' ],
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[ 'c', 'd', 'e', 'f', 'g', 'h', 'i' ],
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[ 'm', 'n', 'o', 'p', 'q' ],
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[ 'k', 'l', 'm', 'n' ],
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[ 't', 'u', 'v', 'w', 'x', 'y', 'z' ]
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]
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```
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## --seed-contents--
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```js
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function lascii(cFrom, cTo) {
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}
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```
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# --solutions--
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```js
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function lascii(cFrom, cTo) {
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function cRange(cFrom, cTo) {
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var iStart = cFrom.charCodeAt(0);
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return Array.apply(
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null, Array(cTo.charCodeAt(0) - iStart + 1)
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).map(function (_, i) {
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return String.fromCharCode(iStart + i);
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});
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}
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return cRange(cFrom, cTo);
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}
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```
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