求一个能算出下面条件的循环

[liming0605]

字符数组1，成员：r0,r1,r2,r3
字符数组2，成员：r0,t1,t2,t3
字符数组3，成员：r0,y1,y2,y3
求能算出这3个数组成员之间能组合的所有组合，每次只列出3个成员，每个数组一个……

[wyman25]

]三个for循环嵌套不就行了？
[code=C#string str='';
for(int i=0;i<=arr1.length,i++)
{
for(int j=0;j<=arr2.length,j++)
{
for(int k=0;k<=arr3.length,k++)
{
str+=arr1[i]+arr2[j]+arr3[k];
}
}
}[/code]

[wyman25]

三个for循环嵌套不就行了？

string str='';
for(int i=0;i<=arr1.length,i++)
{
for(int j=0;j<=arr2.length,j++)
{
for(int k=0;k<=arr3.length,k++)
{
str+=arr1[i]+arr2[j]+arr3[k];
}
}
}

[Thinking-7]

string[] arr1 = {"r0","r1","r2","r3"};
string[] arr2 = {"r0","r1","t2","t3"};
string[] arr3 = {"r0","y1","y2","y3"};
foreach(string str1 in arr1)
{
    foreach(string str2 in arr2)
    {
            foreach(string str3 in arr3)
            {
                string strReturn = str1+","+str2+","+str3;
                return strReturn;
            }
    }
}