Java '编写必要的代码来“左旋转”它们的值：'
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Java 'Write the code necessary to "left rotate" their values:'
提问by MOTIVECODEX
I've tried a lot of combinations and have searched on the web for something useful but unfortunately I've found nothing useful.
我尝试了很多组合，并在网上搜索了一些有用的东西，但不幸的是我没有发现任何有用的东西。
This is for my homework. Only question I cannot answer out of 69 questions.
这是我的家庭作业。在 69 个问题中，只有我无法回答的问题。
Question:
问题：
Four integer variables, pos1, pos2, pos3, pos4 have been declared and initialized. Write the code necessary to "left rotate" their values: for each variable to get the value of the successive variable, with pos4 getting pos1's value.
四个整型变量 pos1、pos2、pos3、pos4 已经声明并初始化。编写必要的代码来“左旋转”它们的值：对于每个变量来获取后续变量的值，pos4 获取 pos1 的值。
Example that I've tried:
我试过的例子：
int tempP1 = pos1;
int tempP2 = pos2;
int tempP3 = pos3;
int tempP4 = pos4;
pos4 = tempP1;
pos3 = tempP2;
pos2 = tempP3;
pos1 = tempP4;
What it shows me:
它向我展示了什么：
Remarks:
???????????Your code had an error during execution
More Hints:
???????????Are you sure you want to use: tempP1
???????????Are you sure you want to use: tempP2
???????????Are you sure you want to use: tempP3
Problems Detected:
???????????pos1 has wrong value
???????????pos3 has wrong value
回答by Peter Svensson
pos4 = tempP1;
pos2 = tempP3;
pos3 = tempP4;
pos1 = tempP2;
Sounds right?
听起来对吗？
回答by The code god
int tempP1 = pos1;
int tempP2 = pos2;
int tempP3 = pos3;
int tempP4 = pos4;
pos4 = tempP1;
pos3 = tempP4;
pos2 = tempP3;
pos1 = tempP2;
回答by InnaS
int tmp = pos1;
pos1 = pos2;
pos2 = pos3;
pos3 = pos4;
pos4 = tmp;
回答by Darren Burns
You can condense your code better by only declaring a single temp value rather than creating four different tempValues:
您可以通过仅声明一个临时值而不是创建四个不同的tempValues 来更好地压缩代码：
int tempValue = 0;
tempValue = pos1;
pos1 = pos2;
pos2 = pos3;
pos3 = pos4;
pos4 = tempValue;
回答by Tushar Paliwal
The code would be :
pos4=tempP1;
pos3=tempP4;
pos2=tempP3;
pos1=tempP2;
代码将是：
pos4=tempP1;
pos3=tempP4;
pos2=tempP3;
pos1=tempP2;
回答by InnaS
int a=pos4;
int b=pos3;
int c=pos2;
pos4=pos1;
pos3=a;
pos2=b;
pos1=c;
