Ruby Integer prime? function with example
The prime? function in Ruby returns a boolean value. It returns true if the number is prime, else it returns false. It requires the ‘prime’ class to be pre-added.
Syntax: number.prime?
Parameter: The function takes the integer which is to be checked for prime or not.
Return Value: The function returns a boolean value which determines if the value is prime or not.
Example 1:
Ruby
# Ruby program for prime? function # Pre-defined class require 'prime' # Initializing the numbers num1 = 100 num2 = 17 num3 = 90 num4 = 29 # Printing if prime or not puts num1.prime? puts num2.prime? puts num3.prime? puts num4.prime? |
Output:
false true false true
Example 2:
Ruby
# Ruby program for prime? function # Pre-defined class require 'prime' # Initializing the numbers num1 = 13 num2 = 19 num3 = 18 num4 = 10 # Printing if prime or not puts num1.prime? puts num2.prime? puts num3.prime? puts num4.prime? |
Output:
true true false false
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