2.6 KiB
2.6 KiB
title | id | challengeType |
---|---|---|
Generate lower case ASCII alphabet | 5a23c84252665b21eecc7e7a | 5 |
Description
['a','b','c','d']
.
Instructions
Tests
tests:
- text: <code>lascii</code> should be a function.
testString: 'assert(typeof lascii=="function","<code>lascii</code> should be a function.");'
- text: <code>lascii("a","d")</code> should return an array.
testString: 'assert(Array.isArray(lascii("a","d")),"<code>lascii("a","d")</code> should return an array.");'
- text: '"<code>lascii("a","d")</code> should return <code>[ "a", "b", "c", "d" ]</code>."'
testString: 'assert.deepEqual(lascii("a","d"),results[0],"<code>lascii("a","d")</code> should return <code>[ "a", "b", "c", "d" ]</code>.");'
- text: '"<code>lascii("c","i")</code> should return <code>[ "c", "d", "e", "f", "g", "h", "i" ]</code>."'
testString: 'assert.deepEqual(lascii("c","i"),results[1],"<code>lascii("c","i")</code> should return <code>[ "c", "d", "e", "f", "g", "h", "i" ]</code>.");'
- text: '"<code>lascii("m","q")</code> should return <code>[ "m", "n", "o", "p", "q" ]</code>."'
testString: 'assert.deepEqual(lascii("m","q"),results[2],"<code>lascii("m","q")</code> should return <code>[ "m", "n", "o", "p", "q" ]</code>.");'
- text: '"<code>lascii("k","n")</code> should return <code>[ "k", "l", "m", "n" ]</code>.")'
testString: 'assert.deepEqual(lascii("k","n"),results[3],"<code>lascii("k","n")</code> should return <code>[ "k", "l", "m", "n" ]</code>.");'
- text: '"<code>lascii("t","z")</code> should return <code>[ "t", "u", "v", "w", "x", "y", "z" ]</code>."'
testString: 'assert.deepEqual(lascii("t","z"),results[4],"<code>lascii("t","z")</code> should return <code>[ "t", "u", "v", "w", "x", "y", "z" ]</code>.");'
Challenge Seed
function lascii (cFrom, cTo) {
// Good luck!
}
After Test
console.info('after the test');
Solution
function lascii(cFrom, cTo) {
function cRange(cFrom, cTo) {
var iStart = cFrom.charCodeAt(0);
return Array.apply(
null, Array(cTo.charCodeAt(0) - iStart + 1)
).map(function (_, i) {
return String.fromCharCode(iStart + i);
});
}
return cRange(cFrom, cTo);
}