IntegerDigits

IntegerDigits(n, base)

returns a list of integer digits for n under base.

IntegerDigits(n, base, padLeft)

pads the result list on the left with maximum padLeft zeros.

See

• Wikipedia - Radix

Examples

>> IntegerDigits(123)
{1,2,3}

>> IntegerDigits(-123)
{1,2,3}

>> IntegerDigits(123, 2)
{1,1,1,1,0,1,1}

>> IntegerDigits(123, 2, 10)
{0,0,0,1,1,1,1,0,1,1}

>> IntegerDigits({123,456,789}, 2, 10)
{{0,0,0,1,1,1,1,0,1,1},{0,1,1,1,0,0,1,0,0,0},{1,1,0,0,0,1,0,1,0,1}}

The A018900 Sum of two distinct powers of 2 integer sequence

>> Select(Range(1000), (Count(IntegerDigits(#, 2), 1)==2)&)
{3,5,6,9,10,12,17,18,20,24,33,34,36,40,48,65,66,68,72,80,96,129,130,132,136,144,160,192,257,258,260,264,272,288,320,384,513,514,516,520,528,544,576,640,768}

Implementation status

• ✅ - full supported

Github

• Implementation of IntegerDigits