public class Test15 {
public static void main(String[] args) {
int count = 0;
for (int i = 1; i < 10; i++) {
for (int j = 0; j < 10; j++) {
for (int k = 0; k < 10; k++) {
if (i != j && i != k && j != k) {
System.out.print(i * 100 + j * 10 + k + " ");
count++;
}
}
}
System.out.println();
}
System.out.println(count);
}
}
一共是648个。
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