转换循环(Java初学者问题) [英] Converting loops (Java Beginner question)

问题描述

在循环之间进行转换是否总是这样?还是有些情况不是呢?在解决Exam这样的问题时最快的检查方法是什么?

Does Converting between loops always works like this? or there is some situation that it does not? and what is the fastest way to check while I'm solving a question like this in Exam?

对于循环:

 for(xx;yy;zz)
    { 
       aa
    }

循环时

    xx
    while(yy)
    {
      aa
      zz
    }

执行时间:

      xx
      do
      { 
        aa
        zz
      }
    while(yy)

推荐答案

您有几个错误.特别是do-while循环是不正确的，因为它总是执行至少一个迭代，而for和while循环则不是这种情况.

You have couple of mistakes. Especially do-while loop is incorrect since it always executes at least one iteration, which is not the case for for and while loops.

for(x(); y(); z())
{ 
   a();
}

x();
while(y())
{
  a();
  z();
}

x();
if(y())
{
  do
  { 
    a();
    z();
  } while(y())
}

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