Eban numbers: Difference between revisions
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eban numbers up to and including 1000000000:
count = 7999</pre>
=={{header|Mathematica}}/{{header|Wolfram Language}}==
<lang Mathematica>ClearAll[ZeroTwoFourSixQ, EbanNumbers]
ZeroTwoFourSixQ[n_Integer] := (n == 0 || n == 2 || n == 4 || n == 6)
EbanNumbers[min_, max_, show : (False | True)] :=
Module[{counter, output, i, b, r, t, m},
counter = 0;
output = "";
i = min;
While[(i += 2) <= max,
{b, r} = QuotientRemainder[i, 10^9];
{m, r} = QuotientRemainder[r, 10^6];
{t, r} = QuotientRemainder[r, 10^3];
If[30 <= m <= 66,
m = Mod[m, 10];
];
If[30 <= t <= 66,
t = Mod[t, 10];
];
If[30 <= r <= 66,
r = Mod[r, 10];
];
If[ZeroTwoFourSixQ[b] && ZeroTwoFourSixQ[m] && ZeroTwoFourSixQ[t] &&
ZeroTwoFourSixQ[r],
counter++;
If[show,
output = output <> ToString[i] <> " ";
]
]
];
Print[min, "-", max, ": ", output, " count = ", counter]
]
EbanNumbers[0, 1000, True]
EbanNumbers[1000, 4000, True]
EbanNumbers[0, 10^4, False]
EbanNumbers[0, 10^5, False]
EbanNumbers[0, 10^6, False]
EbanNumbers[0, 10^7, False]</lang>
{{out}}
<pre>0-1000: 2 4 6 30 32 34 36 40 42 44 46 50 52 54 56 60 62 64 66 count = 19
1000-4000: 2000 2002 2004 2006 2030 2032 2034 2036 2040 2042 2044 2046 2050 2052 2054 2056 2060 2062 2064 2066 4000 count = 21
0-10000: count = 79
0-100000: count = 399
0-1000000: count = 399
0-10000000: count = 1599</pre>
=={{header|Nim}}==
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