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feat: generate English README for leetcode questions
生成 README_EN 文件
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‎solution/0001.Two Sum/README_EN.md

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# [1. Two Sum](https://leetcode.com/problems/two-sum)
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## Description
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<p>Given an array of integers, return <strong>indices</strong> of the two numbers such that they add up to a specific target.</p>
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<p>You may assume that each input would have <strong><em>exactly</em></strong> one solution, and you may not use the <em>same</em> element twice.</p>
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<p><strong>Example:</strong></p>
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<pre>
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Given nums = [2, 7, 11, 15], target = 9,
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Because nums[<strong>0</strong>] + nums[<strong>1</strong>] = 2 + 7 = 9,
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return [<strong>0</strong>, <strong>1</strong>].
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</pre>
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## Solution
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<!-- Type common method here -->
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### Python3
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<!-- Type special method here -->
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```python
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```
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### Java
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<!-- Type special method here -->
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```java
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```
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### ...
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```
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```
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‎solution/0002.Add Two Numbers/README_EN.md

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# [2. Add Two Numbers](https://leetcode.com/problems/add-two-numbers)
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## Description
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<p>You are given two <b>non-empty</b> linked lists representing two non-negative integers. The digits are stored in <b>reverse order</b> and each of their nodes contain a single digit. Add the two numbers and return it as a linked list.</p>
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<p>You may assume the two numbers do not contain any leading zero, except the number 0 itself.</p>
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<p><b>Example:</b></p>
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<pre>
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<b>Input:</b> (2 -&gt; 4 -&gt; 3) + (5 -&gt; 6 -&gt; 4)
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<b>Output:</b> 7 -&gt; 0 -&gt; 8
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<b>Explanation:</b> 342 + 465 = 807.
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</pre>
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## Solution
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<!-- Type common method here -->
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### Python3
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<!-- Type special method here -->
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```python
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```
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### Java
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<!-- Type special method here -->
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```java
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```
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### ...
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```
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```
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‎solution/0003.Longest Substring Without Repeating Characters/README_EN.md

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# [3. Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters)
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## Description
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<p>Given a string, find the length of the <b>longest substring</b> without repeating characters.</p>
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<div>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input: </strong><span id="example-input-1-1">&quot;abcabcbb&quot;</span>
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<strong>Output: </strong><span id="example-output-1">3
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<strong>Explanation:</strong></span> The answer is <code>&quot;abc&quot;</code>, with the length of 3.
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</pre>
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<div>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input: </strong><span id="example-input-2-1">&quot;bbbbb&quot;</span>
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<strong>Output: </strong><span id="example-output-2">1
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</span><span id="example-output-1"><strong>Explanation: </strong>T</span>he answer is <code>&quot;b&quot;</code>, with the length of 1.
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</pre>
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<div>
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<p><strong>Example 3:</strong></p>
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<pre>
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<strong>Input: </strong><span id="example-input-3-1">&quot;pwwkew&quot;</span>
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<strong>Output: </strong><span id="example-output-3">3
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</span><span id="example-output-1"><strong>Explanation: </strong></span>The answer is <code>&quot;wke&quot;</code>, with the length of 3.
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Note that the answer must be a <b>substring</b>, <code>&quot;pwke&quot;</code> is a <i>subsequence</i> and not a substring.
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</pre>
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</div>
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</div>
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</div>
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## Solution
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<!-- Type common method here -->
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### Python3
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<!-- Type special method here -->
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```python
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```
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### Java
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<!-- Type special method here -->
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```java
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```
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### ...
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```
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```
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‎solution/0004.Median of Two Sorted Arrays/README_EN.md

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# [4. Median of Two Sorted Arrays](https://leetcode.com/problems/median-of-two-sorted-arrays)
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## Description
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<p>There are two sorted arrays <b>nums1</b> and <b>nums2</b> of size m and n respectively.</p>
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<p>Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)).</p>
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<p>You may assume <strong>nums1</strong> and <strong>nums2</strong>&nbsp;cannot be both empty.</p>
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<p><b>Example 1:</b></p>
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<pre>
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nums1 = [1, 3]
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nums2 = [2]
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The median is 2.0
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</pre>
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<p><b>Example 2:</b></p>
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<pre>
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nums1 = [1, 2]
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nums2 = [3, 4]
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The median is (2 + 3)/2 = 2.5
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</pre>
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## Solution
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<!-- Type common method here -->
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### Python3
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<!-- Type special method here -->
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```python
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```
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### Java
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<!-- Type special method here -->
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```java
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```
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### ...
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```
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```
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‎solution/0005.Longest Palindromic Substring/README_EN.md

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# [5. Longest Palindromic Substring](https://leetcode.com/problems/longest-palindromic-substring)
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## Description
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<p>Given a string <strong>s</strong>, find the longest palindromic substring in <strong>s</strong>. You may assume that the maximum length of <strong>s</strong> is 1000.</p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> &quot;babad&quot;
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<strong>Output:</strong> &quot;bab&quot;
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<strong>Note:</strong> &quot;aba&quot; is also a valid answer.
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> &quot;cbbd&quot;
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<strong>Output:</strong> &quot;bb&quot;
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</pre>
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## Solution
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<!-- Type common method here -->
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### Python3
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<!-- Type special method here -->
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```python
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```
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### Java
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<!-- Type special method here -->
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```java
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```
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### ...
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```
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```
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‎solution/0006.ZigZag Conversion/README_EN.md

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# [6. ZigZag Conversion](https://leetcode.com/problems/zigzag-conversion)
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## Description
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<p>The string <code>&quot;PAYPALISHIRING&quot;</code> is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility)</p>
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<pre>
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P A H N
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A P L S I I G
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Y I R
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</pre>
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<p>And then read line by line: <code>&quot;PAHNAPLSIIGYIR&quot;</code></p>
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<p>Write the code that will take a string and make this conversion given a number of rows:</p>
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<pre>
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string convert(string s, int numRows);</pre>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> s = &quot;PAYPALISHIRING&quot;, numRows = 3
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<strong>Output:</strong> &quot;PAHNAPLSIIGYIR&quot;
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> s = &quot;PAYPALISHIRING&quot;, numRows =&nbsp;4
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<strong>Output:</strong>&nbsp;&quot;PINALSIGYAHRPI&quot;
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<strong>Explanation:</strong>
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P I N
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A L S I G
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Y A H R
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P I</pre>
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## Solution
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<!-- Type common method here -->
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### Python3
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<!-- Type special method here -->
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```python
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```
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### Java
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<!-- Type special method here -->
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```java
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```
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### ...
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```
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```
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‎solution/0007.Reverse Integer/README_EN.md

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# [7. Reverse Integer](https://leetcode.com/problems/reverse-integer)
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## Description
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<p>Given a 32-bit signed integer, reverse digits of an integer.</p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> 123
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<strong>Output:</strong> 321
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> -123
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<strong>Output:</strong> -321
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</pre>
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<p><strong>Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> 120
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<strong>Output:</strong> 21
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</pre>
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<p><strong>Note:</strong><br />
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Assume we are dealing with an environment which could only store integers within the 32-bit signed integer range: [&minus;2<sup>31</sup>,&nbsp; 2<sup>31&nbsp;</sup>&minus; 1]. For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows.</p>
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## Solution
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<!-- Type common method here -->
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### Python3
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<!-- Type special method here -->
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```python
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```
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### Java
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<!-- Type special method here -->
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```java
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```
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### ...
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```
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```
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