Summarize primes: Difference between revisions
→{{header|Rust}}
Line 966:
done...
</pre>
=={{header|Ruby}}==
{{trans|C++}}
<lang ruby>def isPrime(n)
if n < 2 then
return false
end
if n % 2 == 0 then
return n == 2
end
if n % 3 == 0 then
return n == 3
end
i = 5
while i * i <= n
if n % i == 0 then
return false
end
i += 2
if n % i == 0 then
return false
end
i += 4
end
return true
end
START = 1
STOP = 1000
sum = 0
count = 0
sc = 0
for p in START .. STOP
if isPrime(p) then
count += 1
sum += p
if isPrime(sum) then
print "The sum of %3d primes in [2, %3d] is %5d which is also prime\n" % [count, p, sum]
sc += 1
end
end
end
print "There are %d summerized primes in [%d, %d]\n" % [sc, START, STOP]</lang>
{{out}}
<pre>The sum of 1 primes in [2, 2] is 2 which is also prime
The sum of 2 primes in [2, 3] is 5 which is also prime
The sum of 4 primes in [2, 7] is 17 which is also prime
The sum of 6 primes in [2, 13] is 41 which is also prime
The sum of 12 primes in [2, 37] is 197 which is also prime
The sum of 14 primes in [2, 43] is 281 which is also prime
The sum of 60 primes in [2, 281] is 7699 which is also prime
The sum of 64 primes in [2, 311] is 8893 which is also prime
The sum of 96 primes in [2, 503] is 22039 which is also prime
The sum of 100 primes in [2, 541] is 24133 which is also prime
The sum of 102 primes in [2, 557] is 25237 which is also prime
The sum of 108 primes in [2, 593] is 28697 which is also prime
The sum of 114 primes in [2, 619] is 32353 which is also prime
The sum of 122 primes in [2, 673] is 37561 which is also prime
The sum of 124 primes in [2, 683] is 38921 which is also prime
The sum of 130 primes in [2, 733] is 43201 which is also prime
The sum of 132 primes in [2, 743] is 44683 which is also prime
The sum of 146 primes in [2, 839] is 55837 which is also prime
The sum of 152 primes in [2, 881] is 61027 which is also prime
The sum of 158 primes in [2, 929] is 66463 which is also prime
The sum of 162 primes in [2, 953] is 70241 which is also prime
There are 21 summerized primes in [1, 1000]</pre>
=={{header|Rust}}==
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