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    <title>accept</title>
    <link>https://ruby-china.org/accept</link>
    <description>一滴水，融入大海就不会干涸！</description>
    <language>en-us</language>
    <item>
      <title>Java 打印镂空的菱形，图形</title>
      <description>&lt;pre class="highlight java"&gt;&lt;code&gt;&lt;span class="c1"&gt;//新手java学习三天，目的：打印镂空菱形。具体图形：&lt;/span&gt;
&lt;span class="n"&gt;镂空菱形&lt;/span&gt;  &lt;span class="n"&gt;一共9行&lt;/span&gt;&lt;span class="err"&gt;，&lt;/span&gt;&lt;span class="n"&gt;分成上5&lt;/span&gt; &lt;span class="n"&gt;下&lt;/span&gt; &lt;span class="mi"&gt;4&lt;/span&gt; &lt;span class="n"&gt;的办法来输出&lt;/span&gt;&lt;span class="err"&gt;，&lt;/span&gt;&lt;span class="n"&gt;实心的菱形都打印正确&lt;/span&gt;&lt;span class="err"&gt;，&lt;/span&gt;&lt;span class="n"&gt;但是改代码镂空的时候出现问题&lt;/span&gt;&lt;span class="err"&gt;，&lt;/span&gt;&lt;span class="n"&gt;上半部分镂空也没问题&lt;/span&gt;&lt;span class="err"&gt;，&lt;/span&gt;&lt;span class="n"&gt;下半部分镂空&lt;/span&gt;&lt;span class="err"&gt;，&lt;/span&gt;&lt;span class="n"&gt;打印有误&lt;/span&gt;&lt;span class="err"&gt;，&lt;/span&gt;&lt;span class="n"&gt;检查不出错误&lt;/span&gt;&lt;span class="err"&gt;，&lt;/span&gt;&lt;span class="n"&gt;请指教&lt;/span&gt;
&lt;span class="kd"&gt;public&lt;/span&gt; &lt;span class="kd"&gt;class&lt;/span&gt; &lt;span class="nc"&gt;Ex4&lt;/span&gt;
&lt;span class="o"&gt;{&lt;/span&gt;
    &lt;span class="kd"&gt;public&lt;/span&gt; &lt;span class="kd"&gt;static&lt;/span&gt; &lt;span class="kt"&gt;void&lt;/span&gt; &lt;span class="nf"&gt;main&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="nc"&gt;String&lt;/span&gt;&lt;span class="o"&gt;[]&lt;/span&gt; &lt;span class="n"&gt;args&lt;/span&gt;&lt;span class="o"&gt;)&lt;/span&gt;
    &lt;span class="o"&gt;{&lt;/span&gt;

        &lt;span class="k"&gt;for&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="kt"&gt;int&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="o"&gt;&amp;lt;=&lt;/span&gt; &lt;span class="mi"&gt;5&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt;&lt;span class="o"&gt;++)&lt;/span&gt;
        &lt;span class="o"&gt;{&lt;/span&gt;
            &lt;span class="k"&gt;for&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="kt"&gt;int&lt;/span&gt; &lt;span class="n"&gt;k&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;k&lt;/span&gt; &lt;span class="o"&gt;&amp;lt;=&lt;/span&gt;&lt;span class="mi"&gt;5&lt;/span&gt; &lt;span class="o"&gt;-&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;k&lt;/span&gt;&lt;span class="o"&gt;++)&lt;/span&gt;
            &lt;span class="o"&gt;{&lt;/span&gt;
                &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;" "&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
            &lt;span class="o"&gt;}&lt;/span&gt;
            &lt;span class="k"&gt;for&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="kt"&gt;int&lt;/span&gt; &lt;span class="n"&gt;j&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;j&lt;/span&gt; &lt;span class="o"&gt;&amp;lt;=&lt;/span&gt; &lt;span class="mi"&gt;2&lt;/span&gt; &lt;span class="o"&gt;*&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="o"&gt;-&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;j&lt;/span&gt;&lt;span class="o"&gt;++)&lt;/span&gt;
            &lt;span class="o"&gt;{&lt;/span&gt;
                &lt;span class="k"&gt;if&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="o"&gt;==&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="o"&gt;)&lt;/span&gt;
                &lt;span class="o"&gt;{&lt;/span&gt;
                    &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;"*"&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
                &lt;span class="o"&gt;}&lt;/span&gt;
                &lt;span class="k"&gt;else&lt;/span&gt;
                &lt;span class="o"&gt;{&lt;/span&gt;
                    &lt;span class="k"&gt;if&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="n"&gt;j&lt;/span&gt; &lt;span class="o"&gt;==&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt; &lt;span class="o"&gt;||&lt;/span&gt; &lt;span class="n"&gt;j&lt;/span&gt; &lt;span class="o"&gt;==&lt;/span&gt; &lt;span class="mi"&gt;2&lt;/span&gt; &lt;span class="o"&gt;*&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="o"&gt;-&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="o"&gt;)&lt;/span&gt;
                    &lt;span class="o"&gt;{&lt;/span&gt;
                        &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;"*"&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
                    &lt;span class="o"&gt;}&lt;/span&gt;
                    &lt;span class="k"&gt;else&lt;/span&gt;
                    &lt;span class="o"&gt;{&lt;/span&gt;
                        &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;" "&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
                    &lt;span class="o"&gt;}&lt;/span&gt;
                &lt;span class="o"&gt;}&lt;/span&gt;
            &lt;span class="o"&gt;}&lt;/span&gt;
        &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;"\n"&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
        &lt;span class="o"&gt;}&lt;/span&gt;
        &lt;span class="k"&gt;for&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="kt"&gt;int&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="o"&gt;&amp;lt;=&lt;/span&gt; &lt;span class="mi"&gt;4&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;i&lt;/span&gt;&lt;span class="o"&gt;++)&lt;/span&gt;
        &lt;span class="o"&gt;{&lt;/span&gt;
            &lt;span class="k"&gt;for&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="kt"&gt;int&lt;/span&gt; &lt;span class="n"&gt;k&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;k&lt;/span&gt; &lt;span class="o"&gt;&amp;lt;=&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;k&lt;/span&gt;&lt;span class="o"&gt;++)&lt;/span&gt;
            &lt;span class="o"&gt;{&lt;/span&gt;
                &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;" "&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
            &lt;span class="o"&gt;}&lt;/span&gt;
            &lt;span class="k"&gt;for&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="kt"&gt;int&lt;/span&gt; &lt;span class="n"&gt;j&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="mi"&gt;7&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;j&lt;/span&gt; &lt;span class="o"&gt;&amp;gt;=&lt;/span&gt; &lt;span class="mi"&gt;2&lt;/span&gt; &lt;span class="o"&gt;*&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="o"&gt;-&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="o"&gt;;&lt;/span&gt;&lt;span class="n"&gt;j&lt;/span&gt;&lt;span class="o"&gt;--)&lt;/span&gt;
            &lt;span class="o"&gt;{&lt;/span&gt;
                &lt;span class="k"&gt;if&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="o"&gt;==&lt;/span&gt; &lt;span class="mi"&gt;4&lt;/span&gt;&lt;span class="o"&gt;)&lt;/span&gt;
                &lt;span class="o"&gt;{&lt;/span&gt;
                    &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;"*"&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
                &lt;span class="o"&gt;}&lt;/span&gt;
                &lt;span class="k"&gt;else&lt;/span&gt;
                &lt;span class="o"&gt;{&lt;/span&gt;
                    &lt;span class="k"&gt;if&lt;/span&gt; &lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="n"&gt;j&lt;/span&gt; &lt;span class="o"&gt;==&lt;/span&gt; &lt;span class="mi"&gt;1&lt;/span&gt; &lt;span class="o"&gt;||&lt;/span&gt; &lt;span class="n"&gt;j&lt;/span&gt; &lt;span class="o"&gt;==&lt;/span&gt; &lt;span class="mi"&gt;9&lt;/span&gt; &lt;span class="o"&gt;-&lt;/span&gt; &lt;span class="mi"&gt;2&lt;/span&gt; &lt;span class="o"&gt;*&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt;&lt;span class="o"&gt;)&lt;/span&gt;
                    &lt;span class="o"&gt;{&lt;/span&gt;
                        &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;"*"&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
                    &lt;span class="o"&gt;}&lt;/span&gt;
                    &lt;span class="k"&gt;else&lt;/span&gt;
                    &lt;span class="o"&gt;{&lt;/span&gt;
                        &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;" "&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
                    &lt;span class="o"&gt;}&lt;/span&gt;
                &lt;span class="o"&gt;}&lt;/span&gt;
            &lt;span class="o"&gt;}&lt;/span&gt;
        &lt;span class="nc"&gt;System&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;out&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="na"&gt;print&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="s"&gt;"\n"&lt;/span&gt;&lt;span class="o"&gt;);&lt;/span&gt;
        &lt;span class="o"&gt;}&lt;/span&gt;
    &lt;span class="o"&gt;}&lt;/span&gt;
&lt;span class="o"&gt;}&lt;/span&gt;
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;&lt;img src="https://l.ruby-china.com/photo/2016/55e04d17446f6c1efb2444aa82a8d113.png" title="" alt=""&gt;&lt;/p&gt;</description>
      <author>accept</author>
      <pubDate>Mon, 04 Apr 2016 21:15:55 +0800</pubDate>
      <link>https://ruby-china.org/topics/29540</link>
      <guid>https://ruby-china.org/topics/29540</guid>
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