public class test {
public static void main(String[] args) {
int[] a = new int[30], b = new int[10];
for (int i = 0; i < a.length; i++) {
a[i] = (int) (Math.random() * 10); System.out.print(a[i]+",");
}
for (int i = 0; i < a.length; i++) {
b[a[i]]++;
}
System.out.println();
for (int i = 0; i < b.length; i++) {
System.out.println(i+"出现了"+b[i]+"次");
}
}
}
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