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import java.util.*;
class Test {
public static void main(String[] args) {
Random rand = new Random();
int[] a = new int[200];
int count=0;
for(int i=0;i<a.length;i++){
a[i] = Math.abs(rand.nextInt(900))+100;
System.out.print(a[i]+"\t");
if(a[i]%2==0){
count++;
}
if(i%10==9){
System.out.println();
}
}
System.out.println("偶数个数为:"+count);
System.out.println("偶数概率为:"+(count/200.0));
}
}
class Test {
public static void main(String[] args) {
Random rand = new Random();
int[] a = new int[200];
int count=0;
for(int i=0;i<a.length;i++){
a[i] = Math.abs(rand.nextInt(900))+100;
System.out.print(a[i]+"\t");
if(a[i]%2==0){
count++;
}
if(i%10==9){
System.out.println();
}
}
System.out.println("偶数个数为:"+count);
System.out.println("偶数概率为:"+(count/200.0));
}
}
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