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28 lines
557 B
JavaScript
28 lines
557 B
JavaScript
function subset(arra, arra_size)
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{
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var result_set = [],
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result;
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for(var x = 0; x < Math.pow(2, arra.length); x++)
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{
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result = [];
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i = arra.length - 1;
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do
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{
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if( (x & (1 << i)) !== 0)
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{
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result.push(arra[i]);
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}
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} while(i--);
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if( result.length >= arra_size)
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{
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result_set.push(result);
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}
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}
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return result_set;
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}
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console.log(subset([1, 2, 3], 2));
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