OSSに貢献したい

2018.05.30 shirabelog

みなさんご機嫌いかがでしょうか。最近、仕事を通して考えていることなのですが、OSSってのは人類の叡智の結晶になりうるんじゃないかっていうことです。ソースコードの配布を自由化することで皆がその利益を享受できますし、自身の技…

最近読んだ機械学習関連本

2018.03.28 shirabelog

みなさんご機嫌いかがでしょうか。今日は大学でゴーグルとガスマスクで完全防備した方を見かけたのですが、アメリカにも花粉症の方はいるんですね。日本では杉花粉に悩まされていたのでこちらでは大丈夫なのでたぶん違う花粉が飛んでいる…

Java問題：入力した整数の各桁の和を計算

2018.03.15 shirabelog

みなさんご機嫌いかがでしょうか。今日は入力した整数の各桁の和を計算するために、sumDigitsを使ったコードを紹介します。まずは簡単にsumDigitについて紹介します。 sumDigitsとは? sumDigitsの…

Java問題:2つの整数の比較

2018.03.14 shirabelog

みなさんご機嫌いかがでしょうか。今日はJavaの問題で2つの整数の比較です。この問題の肝は、if節の使い方です。今回はelse, elseifを使わずif節のみで書いてみました。 import java.util.Sca…

Java問題：九九の表示

2018.03.13 shirabelog

みなさんご機嫌いかがでしょうか。今日は九九の表示のアルゴリズムを以下の通りご紹介します。java Scannerクラスを利用するためには、はじめにScannerをインポートする必要があります。（コードは右記：import…

Java問題：入力した二つの数の掛け算

2018.03.13 shirabelog

みなさんご機嫌いかがでしょうか。今日は入力した二つの数の掛け算のプログラムを作ったので共有いたします。

<br /><br /><div  style="padding: 20px 20px; border-color: #FF0000; border-width: 0 0 2px 15px; border-style: solid; background: #F8F8F8;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">import java.util.Scanner;</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp;</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">public class Test {</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp;</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp;public static void main(String[] args) {</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp; Scanner input = new Scanner(System.in);</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp;&nbsp; </span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp; System.out.print("一つ目の数を入力してください: ");</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp; int num1 = input.nextInt();</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp;&nbsp; </span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent
: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp; System.out.print("二つ目の数を入力してください: ");</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp; int num2 = input.nextInt();</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp;&nbsp; </span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp; System.out.println(num1 + " x " + num2 + " = " + num1 * num2);</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp;}</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">&nbsp;</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"><span  style="text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; display: inline !important; white-space: normal; orphans: 2; float: none; -webkit-text-stroke-width: 0px; background-color: transparent;">}</span><br  style="background: none; margin: 0px; padding: 0px; text-align: left; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: Arial; font-style: normal; font-variant: normal; font-weight: 400; text-decoration: none; word-spacing: 0px; white-space: normal; min-height: 0px; orphans: 2; -webkit-text-stroke-width: 0px;"></div><br />

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