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素数をboolean型を使って表示してみる

Last updated at Posted at 2019-04-24

boolean型を学習したので2から100までの素数を出力するコードを確認する。

 public class Qiita {
public static void main(String[] args) {
	boolean bl=true;

	for(int i=2; i<=100; i++) {
		for(int j=2; j<=(i/2); j++) {
			if(i%j==0){
				bl=false;
			}
		}
		if(bl==true){
			System.out.println(i);
		}else{
			bl=true;
		}
	}
} 
}

//実行結果
2,3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 
67,71, 73, 79, 83, 89, 97,

期待した結果が出ました。

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