红宝石 |整数 sqrt()函数

Ruby中的sqrt()函数返回非负整数n的整数平方根，即小于等于n平方根的最大非负整数

Syntax: Integer.sqrt(number)

Parameter: The function takes the integer whose square root is to be returned. It throws an error “out of domain” if a negative number is passed.

Return Value: The function returns the integer square root.

示例 1 ：

#Ruby program for sqrt() function
  
#Initializing the number
num1 = 25 num2 = 16 num3 = 100 num4 = 5
  
#Prints the sqrt of a number
                                      puts Integer.sqrt(num1)
                                          puts Integer.sqrt(num2)
                                              puts Integer.sqrt(num3)
                                                  puts Integer.sqrt(num4)

输出：

5
4
10
2

示例 2 ：

#Ruby program for sqrt() function
  
#Initializing the number
num1 = 64 num2 = 81 num3 = 49 num4 = 36
  
#Prints the sqrt of a number
                                     puts Integer.sqrt(num1)
                                         puts Integer.sqrt(num2)
                                             puts Integer.sqrt(num3)
                                                 puts Integer.sqrt(num4)

输出：

8
9
7
6

参考：https://devdocs.io/ruby~2.5/integer#method-c-sqrt