ruby推送示例

直到循環(huán) (The until loop)

The until loop is one of the great features of Ruby which makes it different from other programming languages. The support of until loop specifies how much user-friendly language Ruby is?

直到循環(huán)是Ruby的重要功能之一，這使其與其他編程語言有所不同。 對直到循環(huán)的支持指定了Ruby用戶友好語言是多少？

The until loop is just the opposite of while loop if we justify it in terms of functionality. while loop is executed as long as the Boolean condition stands to be false but in case of until loop, it executes as long as the Boolean condition does not come out to be true. It is the example of the entry-control loop where the specified condition is checked prior to the execution of the loop's body.

如果我們從功能上證明它，則直到循環(huán)與while循環(huán)正好相反。 while循環(huán)是只要布爾條件成立的情況是假的，但直到循環(huán)的情況下執(zhí)行，因?yàn)椴紶枟l件不出來是真實(shí)的它執(zhí)行長。 這是進(jìn)入控制循環(huán)的示例，其中在執(zhí)行循環(huán)主體之前檢查指定的條件。

The until loop is implemented with the help of the following syntax:

使用以下語法可以實(shí)現(xiàn)直到循環(huán) ：

until conditional [do]# code to be executedend

Example 1:

范例1：

=begin Ruby program to print a message 10 times using until loop =endnum=0until num==10puts "Hello there! Message from Includehelp.com! Happy learning!"num=num+1 end

Output

輸出量

Hello there! Message from Includehelp.com! Happy learning! Hello there! Message from Includehelp.com! Happy learning! Hello there! Message from Includehelp.com! Happy learning! Hello there! Message from Includehelp.com! Happy learning! Hello there! Message from Includehelp.com! Happy learning! Hello there! Message from Includehelp.com! Happy learning! Hello there! Message from Includehelp.com! Happy learning! Hello there! Message from Includehelp.com! Happy learning! Hello there! Message from Includehelp.com! Happy learning! Hello there! Message from Includehelp.com! Happy learning!

Example 2:

范例2：

=begin Ruby program to find the sum of all digits of given number using until loop =endputs "Enter the number" num=gets.chomp.to_itemp=num sum = 0until num==0#implementation of until looprem=num%10num=num/10sum=sum+rem endputs "The sum of #{temp} is #{sum}"

Output

輸出量

Enter the number 456672 The sum of 456672 is 30

Example 3:

范例3：

=begin Ruby program to find the count of even and odd digits in the given number using until loop =endputs "Enter the number" num=gets.chomp.to_itemp=num evecount=0 oddcount=0until num==0#implementation of until looprem=num%10num=num/10if rem%2==0puts "#{rem} is even"evecount+=1elseputs "#{rem} is odd"oddcount+=1end endputs "Number of even numbers are #{evecount}" puts "Number of odd numbers are #{oddcount}"

Output

輸出量

Enter the number 7896532 2 is even 3 is odd 5 is odd 6 is even 9 is odd 8 is even 7 is odd Number of even numbers are 3 Number of odd numbers are 4

翻譯自: https://www.includehelp.com/ruby/until-loop.aspx

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