将一个正整数分解质因数。例如:输入90,打印出90=2*3*3*5。
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("请输入一个正整数:");
int n = sc.nextInt();
System.out.print(n + "=");
solution(n);
}
public static void solution(int n) {
for (int i = 2; i <= n; i++) {
if (n == i) {
System.out.println(i);
return;
}
if (n > i && (n % i == 0)) {
System.out.print(i + "*");
solution(n / i);
break;
}
}
}
}