史上最全Java面试题整理（附参考答案）

<span class="hljs-keyword"&gt;private Card[] cards; <span class="hljs-comment"&gt;/** * 构造器 * */ <span class="hljs-function"&gt;<span class="hljs-keyword"&gt;public <span class="hljs-title"&gt;Poker<span class="hljs-params"&gt;() { cards = <span class="hljs-keyword"&gt;new Card[<span class="hljs-number"&gt;52]; <span class="hljs-keyword"&gt;for(<span class="hljs-keyword"&gt;int i = <span class="hljs-number"&gt;0; i < suites.length; i++) { <span class="hljs-keyword"&gt;for(<span class="hljs-keyword"&gt;int j = <span class="hljs-number"&gt;0; j < faces.length; j++) { cards[i * <span class="hljs-number"&gt;13 + j] = <span class="hljs-keyword"&gt;new Card(suites[i],faces[j]); } } } <span class="hljs-comment"&gt;/** * 洗牌 （随机乱序） * */ <span class="hljs-function"&gt;<span class="hljs-keyword"&gt;public <span class="hljs-keyword"&gt;void <span class="hljs-title"&gt;shuffle<span class="hljs-params"&gt;() { <span class="hljs-keyword"&gt;for(<span class="hljs-keyword"&gt;int i = <span class="hljs-number"&gt;0,len = cards.length; i < len; i++) { <span class="hljs-keyword"&gt;int index = (<span class="hljs-keyword"&gt;int) (Math.random() * len); Card temp = cards[index]; cards[index] = cards[i]; cards[i] = temp; } } <span class="hljs-comment"&gt;/** * 发牌 * <span class="hljs-doctag"&gt;@param index 发牌的位置 * */ <span class="hljs-function"&gt;<span class="hljs-keyword"&gt;public Card <span class="hljs-title"&gt;deal<span class="hljs-params"&gt;(<span class="hljs-keyword"&gt;int index) { <span class="hljs-keyword"&gt;return cards[index]; } <span class="hljs-comment"&gt;/** * 卡片类（一张扑克） * [内部类] * */ <span class="hljs-keyword"&gt;public <span class="hljs-class"&gt;<span class="hljs-keyword"&gt;class <span class="hljs-title"&gt;Card { <span class="hljs-keyword"&gt;private String suite; <span class="hljs-comment"&gt;// 花色 <span class="hljs-keyword"&gt;private <span class="hljs-keyword"&gt;int face; <span class="hljs-comment"&gt;// 点数 <span class="hljs-function"&gt;<span class="hljs-keyword"&gt;public <span class="hljs-title"&gt;Card<span class="hljs-params"&gt;(String suite,<span class="hljs-keyword"&gt;int face) { <span class="hljs-keyword"&gt;this.suite = suite; <span class="hljs-keyword"&gt;this.face = face; } <span class="hljs-meta"&gt;@Override <span class="hljs-function"&gt;<span class="hljs-keyword"&gt;public String <span class="hljs-title"&gt;toString<span class="hljs-params"&gt;() { String faceStr = <span class="hljs-string"&gt;""; <span class="hljs-keyword"&gt;switch(face) { <span class="hljs-keyword"&gt;case <span class="hljs-number"&gt;1: faceStr = <span class="hljs-string"&gt;"A"; <span class="hljs-keyword"&gt;break; <span class="hljs-keyword"&gt;case <span class="hljs-number"&gt;11: faceStr = <span class="hljs-string"&gt;"J"; <span class="hljs-keyword"&gt;break; <span class="hljs-keyword"&gt;case <span class="hljs-number"&gt;12: faceStr = <span class="hljs-string"&gt;"Q"; <span class="hljs-keyword"&gt;break; <span class="hljs-keyword"&gt;case <span class="hljs-number"&gt;13: faceStr = <span class="hljs-string"&gt;"K"; <span class="hljs-keyword"&gt;break; <span class="hljs-keyword"&gt;default: faceStr = String.valueOf(face); } <span class="hljs-keyword"&gt;return suite + faceStr; } }

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