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prime number: review comments-3 implementation

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Sahil Afrid Farookhi 2021-03-28 22:25:40 +05:30
parent 00d1ed0973
commit a864792884
1 changed files with 18 additions and 10 deletions
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maths/prime_number.rb
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@ -2,30 +2,38 @@
# Mathematical explanation: A number which has only 2 factors i.e., 1 (one) and itself
# Prime number check function
def is_prime_number(number)
prime_flag = false
if number>0
def prime_number(number)
non_prime_flag = false
if number > 0
if number == 1
prime_flag = true
non_prime_flag = true
elsif number == 2
non_prime_flag = false
elsif number % 2 == 0
non_prime_flag = true
else
prime_flag = (2..number/2).any? { |i| number % i == 0 }
non_prime_flag = (2..Math.sqrt(number)).any? { |i| number % i == 0 }
end
else
prime_flag = true
non_prime_flag = true
end
if !prime_flag
if !non_prime_flag
puts "The given number #{number} is a Prime."
else
puts "The given number #{number} is not a Prime."
end
end
# Non-prime input
prime_number(1)
# prime input
is_prime_number(2)
# Number 2 is an even prime number
prime_number(2)
# Non-prime input
is_prime_number(20)
prime_number(20)
# Negative input
is_prime_number(-21)
prime_number(-21)