java:
public class test {
public static void main(String[] args) {
int n = 0;
for(int i = 1; i <= 4; ++i)
for(int j = 1; j <= 4; ++j)
for(int k = 1; k <= 4; ++k)
if(i != j && j != k && i != k && ++n != 0)
System.out.println("NO."+n+":"+i+""+j+""+k);
System.out.println("共有:" + n + "种");
}
}
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