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Range expansion: Difference between revisions
Add Jsish
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{{out}}$ jq -c -n -f Range_expansion.jq
[-6,-3,-2,-1,3,4,5,7,8,9,10,11,14,15,17,18,19,20]
=={{header|Jsish}}==
{{trans|Javascript}}
<lang javascript>#!/usr/bin/env jsish
"use strict";
/* Range expansion, in Jsish */
function rangeExpand(rangeExpr) {
function getFactors(term) {
var matches = term.match(/(-?[0-9]+)-(-?[0-9]+)/);
if (!matches) return {first:Number(term)};
return {first:Number(matches[1]), last:Number(matches[2])};
}
function expandTerm(term) {
var factors = getFactors(term);
if (factors.length < 2) return [factors.first];
var range = [];
for (var n = factors.first; n <= factors.last; n++) {
range.push(n);
}
return range;
}
var result = [];
var terms = rangeExpr.split(",");
for (var t in terms) {
result = result.concat(expandTerm(terms[t]));
}
return result;
}
if (Interp.conf('unitTest')) {
; rangeExpand('-6,-3--1,3-5,7-11,14,15,17-20');
}
/*
=!EXPECTSTART!=
rangeExpand('-6,-3--1,3-5,7-11,14,15,17-20') ==> [ -6, -3, -2, -1, 3, 4, 5, 7, 8, 9, 10, 11, 14, 15, 17, 18, 19, 20 ]
=!EXPECTEND!=
*/</lang>
{{out}}
<pre>prompt$ jsish --U rangeExpansion.jsi
rangeExpand('-6,-3--1,3-5,7-11,14,15,17-20') ==> [ -6, -3, -2, -1, 3, 4, 5, 7, 8, 9, 10, 11, 14, 15, 17, 18, 19, 20 ]</pre>
=={{header|Julia}}==
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