leetcode-problemset/leetcode-cn/originData/parsing-a-boolean-expression.json

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        "question": {
            "questionId": "1197",
            "questionFrontendId": "1106",
            "categoryTitle": "Algorithms",
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            "title": "Parsing A Boolean Expression",
            "titleSlug": "parsing-a-boolean-expression",
            "content": "<p>Return the result of evaluating a given boolean <code>expression</code>, represented as a string.</p>\n\n<p>An expression can either be:</p>\n\n<ul>\n\t<li><code>&quot;t&quot;</code>, evaluating to <code>True</code>;</li>\n\t<li><code>&quot;f&quot;</code>, evaluating to <code>False</code>;</li>\n\t<li><code>&quot;!(expr)&quot;</code>, evaluating to the logical NOT of the inner expression <code>expr</code>;</li>\n\t<li><code>&quot;&amp;(expr1,expr2,...)&quot;</code>, evaluating to the logical AND of 2 or more inner expressions <code>expr1, expr2, ...</code>;</li>\n\t<li><code>&quot;|(expr1,expr2,...)&quot;</code>, evaluating to the logical OR of 2 or more inner expressions <code>expr1, expr2, ...</code></li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> expression = &quot;!(f)&quot;\n<strong>Output:</strong> true\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> expression = &quot;|(f,t)&quot;\n<strong>Output:</strong> true\n</pre>\n\n<p><strong>Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> expression = &quot;&amp;(t,f)&quot;\n<strong>Output:</strong> false\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= expression.length &lt;= 2 * 10<sup>4</sup></code></li>\n\t<li><code>expression[i]</code> consists of characters in <code>{&#39;(&#39;, &#39;)&#39;, &#39;&amp;&#39;, &#39;|&#39;, &#39;!&#39;, &#39;t&#39;, &#39;f&#39;, &#39;,&#39;}</code>.</li>\n\t<li><code>expression</code> is a valid expression representing a boolean, as given in the description.</li>\n</ul>\n",
            "translatedTitle": "解析布尔表达式",
            "translatedContent": "<p>给你一个以字符串形式表述的&nbsp;<a href=\"https://baike.baidu.com/item/%E5%B8%83%E5%B0%94%E8%A1%A8%E8%BE%BE%E5%BC%8F/1574380?fr=aladdin\" target=\"_blank\">布尔表达式</a>（boolean） <code>expression</code>，返回该式的运算结果。</p>\n\n<p>有效的表达式需遵循以下约定：</p>\n\n<ul>\n\t<li><code>&quot;t&quot;</code>，运算结果为 <code>True</code></li>\n\t<li><code>&quot;f&quot;</code>，运算结果为 <code>False</code></li>\n\t<li><code>&quot;!(expr)&quot;</code>，运算过程为对内部表达式 <code>expr</code> 进行逻辑 <strong>非的运算</strong>（NOT）</li>\n\t<li><code>&quot;&amp;(expr1,expr2,...)&quot;</code>，运算过程为对 2 个或以上内部表达式 <code>expr1, expr2, ...</code> 进行逻辑 <strong>与的运算</strong>（AND）</li>\n\t<li><code>&quot;|(expr1,expr2,...)&quot;</code>，运算过程为对 2 个或以上内部表达式 <code>expr1, expr2, ...</code> 进行逻辑 <strong>或的运算</strong>（OR）</li>\n</ul>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre><strong>输入：</strong>expression = &quot;!(f)&quot;\n<strong>输出：</strong>true\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre><strong>输入：</strong>expression = &quot;|(f,t)&quot;\n<strong>输出：</strong>true\n</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre><strong>输入：</strong>expression = &quot;&amp;(t,f)&quot;\n<strong>输出：</strong>false\n</pre>\n\n<p><strong>示例 4：</strong></p>\n\n<pre><strong>输入：</strong>expression = &quot;|(&amp;(t,f,t),!(t))&quot;\n<strong>输出：</strong>false\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= expression.length &lt;= 20000</code></li>\n\t<li><code>expression[i]</code> 由 <code>{&#39;(&#39;, &#39;)&#39;, &#39;&amp;&#39;, &#39;|&#39;, &#39;!&#39;, &#39;t&#39;, &#39;f&#39;, &#39;,&#39;}</code> 中的字符组成。</li>\n\t<li><code>expression</code> 是以上述形式给出的有效表达式，表示一个布尔值。</li>\n</ul>\n",
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