leetcode-problemset/leetcode-cn/originData/add-strings.json

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            "title": "Add Strings",
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            "content": "<p>Given two non-negative integers, <code>num1</code> and <code>num2</code> represented as string, return <em>the sum of</em> <code>num1</code> <em>and</em> <code>num2</code> <em>as a string</em>.</p>\n\n<p>You must solve the problem without using any built-in library for handling large integers (such as <code>BigInteger</code>). You must also not convert the inputs to integers directly.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> num1 = &quot;11&quot;, num2 = &quot;123&quot;\n<strong>Output:</strong> &quot;134&quot;\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> num1 = &quot;456&quot;, num2 = &quot;77&quot;\n<strong>Output:</strong> &quot;533&quot;\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> num1 = &quot;0&quot;, num2 = &quot;0&quot;\n<strong>Output:</strong> &quot;0&quot;\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= num1.length, num2.length &lt;= 10<sup>4</sup></code></li>\n\t<li><code>num1</code> and <code>num2</code> consist of only digits.</li>\n\t<li><code>num1</code> and <code>num2</code> don&#39;t have any leading zeros except for the zero itself.</li>\n</ul>\n",
            "translatedTitle": "字符串相加",
            "translatedContent": "<p>给定两个字符串形式的非负整数&nbsp;<code>num1</code> 和<code>num2</code>&nbsp;，计算它们的和并同样以字符串形式返回。</p>\n\n<p>你不能使用任何內建的用于处理大整数的库（比如 <code>BigInteger</code>），&nbsp;也不能直接将输入的字符串转换为整数形式。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>num1 = \"11\", num2 = \"123\"\n<strong>输出：</strong>\"134\"\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>num1 = \"456\", num2 = \"77\"\n<strong>输出：</strong>\"533\"\n</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre>\n<strong>输入：</strong>num1 = \"0\", num2 = \"0\"\n<strong>输出：</strong>\"0\"\n</pre>\n\n<p>&nbsp;</p>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= num1.length, num2.length &lt;= 10<sup>4</sup></code></li>\n\t<li><code>num1</code> 和<code>num2</code> 都只包含数字&nbsp;<code>0-9</code></li>\n\t<li><code>num1</code> 和<code>num2</code> 都不包含任何前导零</li>\n</ul>\n",
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