利用輸入對(duì)話框判斷一個(gè)數(shù)是否為素?cái)?shù)（JoptionPane.ShowInputDialog）
慕粉4006738
2016-09-28 23:16:24
1 回答
我是偶哦
TA貢獻(xiàn)10條經(jīng)驗(yàn) 獲得超3個(gè)贊
import?javax.swing.*;
public?class?Test?{
????public?static?boolean?isPrime(int?a)?{
????????boolean?flag?=?true;
????????if?(a?<?2)?{
????????????return?false;
????????}?else?{
????????????for?(int?i?=?2;?i?<=?Math.sqrt(a);?i++)?{
????????????????if?(a?%?i?==?0)?{
????????????????????flag?=?false;
????????????????????break;
????????????????}
????????????}
????????}
????????return?flag;
????}
????public?static?void?main(String[]?args)??{
????????String?number?=?JOptionPane.showInputDialog("請(qǐng)輸入:");
????????boolean?result?=?isPrime(Integer.valueOf(number));
????????JOptionPane.showMessageDialog(null,?result);
????}
}添加回答
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