红宝石整数素数？示例函数

总理？ Ruby 中的函数返回一个布尔值。如果数字是素数，则返回 true，否则返回 false。它需要预先添加“prime”类。

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.

示例 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?

输出：

false
true
false
true

示例 2 ：

红宝石

# 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?

输出：

true
true
false
false