Sum of two adjacent numbers are primes: Difference between revisions
Sum of two adjacent numbers are primes (view source)
Revision as of 21:59, 26 March 2022
, 2 years agoAdded Sidef
(→{{header|C}}: Recoded to do extra credit.) |
(Added Sidef) |
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Line 788:
36 + 37 = 73
done...
</pre>
=={{header|Sidef}}==
<lang ruby>var wanted = (1..Inf -> lazy.map {|n| [n, n+1, n+(n+1)] }\
.grep { .tail.is_prime })
wanted.first(20).each_2d {|a,b,c|
printf("%2d + %2d = %2d\n", a,b,c)
}</lang>
{{out}}
<pre>
1 + 2 = 3
2 + 3 = 5
3 + 4 = 7
5 + 6 = 11
6 + 7 = 13
8 + 9 = 17
9 + 10 = 19
11 + 12 = 23
14 + 15 = 29
15 + 16 = 31
18 + 19 = 37
20 + 21 = 41
21 + 22 = 43
23 + 24 = 47
26 + 27 = 53
29 + 30 = 59
30 + 31 = 61
33 + 34 = 67
35 + 36 = 71
36 + 37 = 73
</pre>
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