feat: update lc problems (#3542)

solution/0000-0099/0046.Permutations/README_EN.md

@@ -17,7 +17,7 @@ tags:
 
 <!-- description:start -->
 
-<p>Given an array <code>nums</code> of distinct integers, return <em>all the possible permutations</em>. You can return the answer in <strong>any order</strong>.</p>
+<p>Given an array <code>nums</code> of distinct integers, return all the possible <span data-keyword="permutation-array">permutations</span>. You can return the answer in <strong>any order</strong>.</p>
 
 <p>&nbsp;</p>
 <p><strong class="example">Example 1:</strong></p>

solution/0200-0299/0241.Different Ways to Add Parentheses/README.md

@@ -57,6 +57,7 @@ tags:
 	<li><code>1 &lt;= expression.length &lt;= 20</code></li>
 	<li><code>expression</code> 由数字和算符 <code>'+'</code>、<code>'-'</code> 和 <code>'*'</code> 组成。</li>
 	<li>输入表达式中的所有整数值在范围 <code>[0, 99]</code>&nbsp;</li>
+	<li>输入表达式中的所有整数都没有前导&nbsp;<code>'-'</code>&nbsp;或&nbsp;<code>'+'</code> 表示符号。</li>
 </ul>
 
 <!-- description:end -->

solution/0200-0299/0241.Different Ways to Add Parentheses/README_EN.md

@@ -55,6 +55,7 @@ tags:
 	<li><code>1 &lt;= expression.length &lt;= 20</code></li>
 	<li><code>expression</code> consists of digits and the operator <code>&#39;+&#39;</code>, <code>&#39;-&#39;</code>, and <code>&#39;*&#39;</code>.</li>
 	<li>All the integer values in the input expression are in the range <code>[0, 99]</code>.</li>
+	<li>The integer values in the input expression do not have a leading <code>&#39;-&#39;</code> or <code>&#39;+&#39;</code> denoting the sign.</li>
 </ul>
 
 <!-- description:end -->

solution/0200-0299/0287.Find the Duplicate Number/README_EN.md

@@ -23,7 +23,7 @@ tags:
 
 <p>There is only <strong>one repeated number</strong> in <code>nums</code>, return <em>this&nbsp;repeated&nbsp;number</em>.</p>
 
-<p>You must solve the problem <strong>without</strong> modifying the array <code>nums</code>&nbsp;and uses only constant extra space.</p>
+<p>You must solve the problem <strong>without</strong> modifying the array <code>nums</code>&nbsp;and using only constant extra space.</p>
 
 <p>&nbsp;</p>
 <p><strong class="example">Example 1:</strong></p>

solution/0300-0399/0357.Count Numbers with Unique Digits/README.md

@@ -29,7 +29,7 @@ tags:
 <pre>
 <strong>输入：</strong>n = 2
 <strong>输出：</strong>91
-<strong>解释：</strong>答案应为除去 <code>11、22、33、44、55、66、77、88、99 </code>外，在 0 ≤ x &lt; 100 范围内的所有数字。
+<strong>解释：</strong>答案应为除去 <code>11、22、33、44、55、66、77、88、99 </code>外，在 0 ≤ x &lt; 100 范围内的所有数字。 
 </pre>
 
 <p><strong>示例 2：</strong></p>

solution/0400-0499/0438.Find All Anagrams in a String/README.md

@@ -18,9 +18,7 @@ tags:
 
 <!-- description:start -->
 
-<p>给定两个字符串&nbsp;<code>s</code>&nbsp;和 <code>p</code>，找到&nbsp;<code>s</code><strong>&nbsp;</strong>中所有&nbsp;<code>p</code><strong>&nbsp;</strong>的&nbsp;<strong>异位词&nbsp;</strong>的子串，返回这些子串的起始索引。不考虑答案输出的顺序。</p>
-
-<p><strong>异位词 </strong>指由相同字母重排列形成的字符串（包括相同的字符串）。</p>
+<p>给定两个字符串&nbsp;<code>s</code>&nbsp;和 <code>p</code>，找到&nbsp;<code>s</code><strong>&nbsp;</strong>中所有&nbsp;<code>p</code><strong>&nbsp;</strong>的&nbsp;<strong><span data-keyword="anagram">异位词</span>&nbsp;</strong>的子串，返回这些子串的起始索引。不考虑答案输出的顺序。</p>
 
 <p>&nbsp;</p>
 

solution/0400-0499/0438.Find All Anagrams in a String/README_EN.md

@@ -18,9 +18,7 @@ tags:
 
 <!-- description:start -->
 
-<p>Given two strings <code>s</code> and <code>p</code>, return <em>an array of all the start indices of </em><code>p</code><em>&#39;s anagrams in </em><code>s</code>. You may return the answer in <strong>any order</strong>.</p>
-
-<p>An <strong>Anagram</strong> is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once.</p>
+<p>Given two strings <code>s</code> and <code>p</code>, return an array of all the start indices of <code>p</code>&#39;s <span data-keyword="anagram">anagrams</span> in <code>s</code>. You may return the answer in <strong>any order</strong>.</p>
 
 <p>&nbsp;</p>
 <p><strong class="example">Example 1:</strong></p>

solution/0500-0599/0567.Permutation in String/README.md

@@ -19,7 +19,7 @@ tags:
 
 <!-- description:start -->
 
-<p>给你两个字符串&nbsp;<code>s1</code>&nbsp;和&nbsp;<code>s2</code> ，写一个函数来判断 <code>s2</code> 是否包含 <code>s1</code><strong>&nbsp;</strong>的排列。如果是，返回 <code>true</code> ；否则，返回 <code>false</code> 。</p>
+<p>给你两个字符串&nbsp;<code>s1</code>&nbsp;和&nbsp;<code>s2</code> ，写一个函数来判断 <code>s2</code> 是否包含 <code>s1</code><strong>&nbsp;</strong>的 <span data-keyword="permutation-string">排列</span>。如果是，返回 <code>true</code> ；否则，返回 <code>false</code> 。</p>
 
 <p>换句话说，<code>s1</code> 的排列之一是 <code>s2</code> 的 <strong>子串</strong> 。</p>
 

solution/0500-0599/0567.Permutation in String/README_EN.md

@@ -19,7 +19,7 @@ tags:
 
 <!-- description:start -->
 
-<p>Given two strings <code>s1</code> and <code>s2</code>, return <code>true</code><em> if </em><code>s2</code><em> contains a permutation of </em><code>s1</code><em>, or </em><code>false</code><em> otherwise</em>.</p>
+<p>Given two strings <code>s1</code> and <code>s2</code>, return <code>true</code> if <code>s2</code> contains a <span data-keyword="permutation-string">permutation</span> of <code>s1</code>, or <code>false</code> otherwise.</p>
 
 <p>In other words, return <code>true</code> if one of <code>s1</code>&#39;s permutations is the substring of <code>s2</code>.</p>
 

solution/0600-0699/0600.Non-negative Integers without Consecutive Ones/README.md

@@ -25,7 +25,7 @@ tags:
 <pre>
 <strong>输入:</strong> n = 5
 <strong>输出:</strong> 5
-<strong>解释:</strong>
+<strong>解释:</strong> 
 下面列出范围在 [0, 5] 的非负整数与其对应的二进制表示：
 0 : 0
 1 : 1

solution/0600-0699/0600.Non-negative Integers without Consecutive Ones/README_EN.md

@@ -32,7 +32,7 @@ Here are the non-negative integers <= 5 with their corresponding binary repre
 3 : 11
 4 : 100
 5 : 101
-Among them, only integer 3 disobeys the rule (two consecutive ones) and the other 5 satisfy the rule.
+Among them, only integer 3 disobeys the rule (two consecutive ones) and the other 5 satisfy the rule. 
 </pre>
 
 <p><strong class="example">Example 2:</strong></p>

solution/0600-0699/0666.Path Sum IV/README_EN.md

@@ -20,36 +20,48 @@ tags:
 
 <!-- description:start -->
 
-<p>If the depth of a tree is smaller than <code>5</code>, then this tree can be represented by an array of three-digit integers. For each integer in this array:</p>
+<p>If the depth of a tree is smaller than <code>5</code>, then this tree can be represented by an array of three-digit integers. You are given an <strong>ascending </strong>array <code>nums</code> consisting of three-digit integers representing a binary tree with a depth smaller than <code>5</code>, where for each integer:</p>
 
 <ul>
-	<li>The hundreds digit represents the depth <code>d</code> of this node where <code>1 &lt;= d &lt;= 4</code>.</li>
-	<li>The tens digit represents the position <code>p</code> of this node in the level it belongs to where <code>1 &lt;= p &lt;= 8</code>. The position is the same as that in a full binary tree.</li>
-	<li>The units digit represents the value <code>v</code> of this node where <code>0 &lt;= v &lt;= 9</code>.</li>
+	<li>The hundreds digit represents the depth <code>d</code> of this node, where <code>1 &lt;= d &lt;= 4</code>.</li>
+	<li>The tens digit represents the position <code>p</code> of this node within its level, where <code>1 &lt;= p &lt;= 8</code>, corresponding to its position in a <strong>full binary tree</strong>.</li>
+	<li>The units digit represents the value <code>v</code> of this node, where <code>0 &lt;= v &lt;= 9</code>.</li>
 </ul>
 
-<p>Given an array of <strong>ascending</strong> three-digit integers <code>nums</code> representing a binary tree with a depth smaller than <code>5</code>, return <em>the sum of all paths from the root towards the leaves</em>.</p>
+<p>Return the <strong>sum</strong> of <strong>all paths</strong> from the <strong>root</strong> towards the <strong>leaves</strong>.</p>
 
 <p>It is <strong>guaranteed</strong> that the given array represents a valid connected binary tree.</p>
 
 <p>&nbsp;</p>
 <p><strong class="example">Example 1:</strong></p>
-<img alt="" src="https://fastly.jsdelivr.net/gh/doocs/leetcode@main/solution/0600-0699/0666.Path%20Sum%20IV/images/pathsum4-1-tree.jpg" style="width: 212px; height: 183px;" />
-<pre>
-<strong>Input:</strong> nums = [113,215,221]
-<strong>Output:</strong> 12
-<strong>Explanation:</strong> The tree that the list represents is shown.
-The path sum is (3 + 5) + (3 + 1) = 12.
-</pre>
+
+<p><img alt="" src="https://fastly.jsdelivr.net/gh/doocs/leetcode@main/solution/0600-0699/0666.Path%20Sum%20IV/images/pathsum4-1-tree.jpg" style="width: 212px; height: 183px;" /></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">nums = [113,215,221]</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">12</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>The tree that the list represents is shown.<br />
+The path sum is (3 + 5) + (3 + 1) = 12.</p>
+</div>
 
 <p><strong class="example">Example 2:</strong></p>
-<img alt="" src="https://fastly.jsdelivr.net/gh/doocs/leetcode@main/solution/0600-0699/0666.Path%20Sum%20IV/images/pathsum4-2-tree.jpg" style="width: 132px; height: 183px;" />
-<pre>
-<strong>Input:</strong> nums = [113,221]
-<strong>Output:</strong> 4
-<strong>Explanation:</strong> The tree that the list represents is shown. 
-The path sum is (3 + 1) = 4.
-</pre>
+
+<p><img alt="" src="https://fastly.jsdelivr.net/gh/doocs/leetcode@main/solution/0600-0699/0666.Path%20Sum%20IV/images/pathsum4-2-tree.jpg" style="width: 132px; height: 183px;" /></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">nums = [113,221]</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">4</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>The tree that the list represents is shown.&nbsp;<br />
+The path sum is (3 + 1) = 4.</p>
+</div>
 
 <p>&nbsp;</p>
 <p><strong>Constraints:</strong></p>

solution/0700-0799/0733.Flood Fill/README_EN.md

@@ -19,13 +19,18 @@ tags:
 
 <!-- description:start -->
 
-<p>An image is represented by an <code>m x n</code> integer grid <code>image</code> where <code>image[i][j]</code> represents the pixel value of the image.</p>
+<p>You are given an image represented by an <code>m x n</code> grid of integers <code>image</code>, where <code>image[i][j]</code> represents the pixel value of the image. You are also given three integers <code>sr</code>, <code>sc</code>, and <code>color</code>. Your task is to perform a <strong>flood fill</strong> on the image starting from the pixel <code>image[sr][sc]</code>.</p>
 
-<p>You are also given three integers <code>sr</code>, <code>sc</code>, and <code>color</code>. You should perform a <strong>flood fill</strong> on the image starting from the pixel <code>image[sr][sc]</code>.</p>
+<p>To perform a <strong>flood fill</strong>:</p>
 
-<p>To perform a <strong>flood fill</strong>, consider the starting pixel, plus any pixels connected <strong>4-directionally</strong> to the starting pixel of the same color as the starting pixel, plus any pixels connected <strong>4-directionally</strong> to those pixels (also with the same color), and so on. Replace the color of all of the aforementioned pixels with <code>color</code>.</p>
+<ol>
+	<li>Begin with the starting pixel and change its color to <code>color</code>.</li>
+	<li>Perform the same process for each pixel that is <strong>directly adjacent</strong> (pixels that share a side with the original pixel, either horizontally or vertically) and shares the <strong>same color</strong> as the starting pixel.</li>
+	<li>Keep <strong>repeating</strong> this process by checking neighboring pixels of the <em>updated</em> pixels&nbsp;and modifying their color if it matches the original color of the starting pixel.</li>
+	<li>The process <strong>stops</strong> when there are <strong>no more</strong> adjacent pixels of the original color to update.</li>
+</ol>
 
-<p>Return <em>the modified image after performing the flood fill</em>.</p>
+<p>Return the <strong>modified</strong> image after performing the flood fill.</p>
 
 <p>&nbsp;</p>
 <p><strong class="example">Example 1:</strong></p>
@@ -41,7 +46,7 @@ tags:
 
 <p>From the center of the image with position <code>(sr, sc) = (1, 1)</code> (i.e., the red pixel), all pixels connected by a path of the same color as the starting pixel (i.e., the blue pixels) are colored with the new color.</p>
 
-<p>Note the bottom corner is <strong>not</strong> colored 2, because it is not 4-directionally connected to the starting pixel.</p>
+<p>Note the bottom corner is <strong>not</strong> colored 2, because it is not horizontally or vertically connected to the starting pixel.</p>
 </div>
 
 <p><strong class="example">Example 2:</strong></p>

solution/0900-0999/0912.Sort an Array/README.md

@@ -25,6 +25,8 @@ tags:
 
 <p>给你一个整数数组&nbsp;<code>nums</code>，请你将该数组升序排列。</p>
 
+<p>你必须在 <strong>不使用任何内置函数</strong> 的情况下解决问题，时间复杂度为 <code>O(nlog(n))</code>，并且空间复杂度尽可能小。</p>
+
 <p>&nbsp;</p>
 
 <ol>

solution/1800-1899/1813.Sentence Similarity III/README_EN.md

@@ -20,36 +20,55 @@ tags:
 
 <!-- description:start -->
 
-<p>A sentence is a list of words that are separated by a single space with no leading or trailing spaces. For example, <code>&quot;Hello World&quot;</code>, <code>&quot;HELLO&quot;</code>, <code>&quot;hello world hello world&quot;</code> are all sentences. Words consist of <strong>only</strong> uppercase and lowercase English letters.</p>
+<p>You are given two strings <code>sentence1</code> and <code>sentence2</code>, each representing a <strong>sentence</strong> composed of words. A sentence is a list of <strong>words</strong> that are separated by a <strong>single</strong> space with no leading or trailing spaces. Each word consists of only uppercase and lowercase English characters.</p>
 
-<p>Two sentences <code>sentence1</code> and <code>sentence2</code> are <strong>similar</strong> if it is possible to insert an arbitrary sentence <strong>(possibly empty)</strong> inside one of these sentences such that the two sentences become equal. For example, <code>sentence1 = &quot;Hello my name is Jane&quot;</code> and <code>sentence2 = &quot;Hello Jane&quot;</code> can be made equal by inserting <code>&quot;my name is&quot;</code> between <code>&quot;Hello&quot;</code> and <code>&quot;Jane&quot;</code> in <code>sentence2</code>.</p>
+<p>Two sentences <code>s1</code> and <code>s2</code> are considered <strong>similar</strong> if it is possible to insert an arbitrary sentence (<em>possibly empty</em>) inside one of these sentences such that the two sentences become equal. <strong>Note</strong> that the inserted sentence must be separated from existing words by spaces.</p>
 
-<p>Given two sentences <code>sentence1</code> and <code>sentence2</code>, return <code>true</code> <em>if </em><code>sentence1</code> <em>and </em><code>sentence2</code> <em>are similar.</em> Otherwise, return <code>false</code>.</p>
+<p>For example,</p>
+
+<ul>
+	<li><code>s1 = &quot;Hello Jane&quot;</code> and <code>s2 = &quot;Hello my name is Jane&quot;</code> can be made equal by inserting <code>&quot;my name is&quot;</code> between <code>&quot;Hello&quot;</code><font face="monospace"> </font>and <code>&quot;Jane&quot;</code><font face="monospace"> in s1.</font></li>
+	<li><font face="monospace"><code>s1 = &quot;Frog cool&quot;</code> </font>and<font face="monospace"> <code>s2 = &quot;Frogs are cool&quot;</code> </font>are <strong>not</strong> similar, since although there is a sentence <code>&quot;s are&quot;</code> inserted into <code>s1</code>, it is not separated from <code>&quot;Frog&quot;</code> by a space.</li>
+</ul>
+
+<p>Given two sentences <code>sentence1</code> and <code>sentence2</code>, return <strong>true</strong> if <code>sentence1</code> and <code>sentence2</code> are <strong>similar</strong>. Otherwise, return <strong>false</strong>.</p>
 
 <p>&nbsp;</p>
 <p><strong class="example">Example 1:</strong></p>
 
-<pre>
-<strong>Input:</strong> sentence1 = &quot;My name is Haley&quot;, sentence2 = &quot;My Haley&quot;
-<strong>Output:</strong> true
-<strong>Explanation:</strong> sentence2 can be turned to sentence1 by inserting &quot;name is&quot; between &quot;My&quot; and &quot;Haley&quot;.
-</pre>
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">sentence1 = &quot;My name is Haley&quot;, sentence2 = &quot;My Haley&quot;</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">true</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p><code>sentence2</code> can be turned to <code>sentence1</code> by inserting &quot;name is&quot; between &quot;My&quot; and &quot;Haley&quot;.</p>
+</div>
 
 <p><strong class="example">Example 2:</strong></p>
 
-<pre>
-<strong>Input:</strong> sentence1 = &quot;of&quot;, sentence2 = &quot;A lot of words&quot;
-<strong>Output:</strong> false
-<strong>Explanation: </strong>No single sentence can be inserted inside one of the sentences to make it equal to the other.
-</pre>
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">sentence1 = &quot;of&quot;, sentence2 = &quot;A lot of words&quot;</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">false</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>No single sentence can be inserted inside one of the sentences to make it equal to the other.</p>
+</div>
 
 <p><strong class="example">Example 3:</strong></p>
 
-<pre>
-<strong>Input:</strong> sentence1 = &quot;Eating right now&quot;, sentence2 = &quot;Eating&quot;
-<strong>Output:</strong> true
-<strong>Explanation:</strong> sentence2 can be turned to sentence1 by inserting &quot;right now&quot; at the end of the sentence.
-</pre>
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">sentence1 = &quot;Eating right now&quot;, sentence2 = &quot;Eating&quot;</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">true</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p><code>sentence2</code> can be turned to <code>sentence1</code> by inserting &quot;right now&quot; at the end of the sentence.</p>
+</div>
 
 <p>&nbsp;</p>
 <p><strong>Constraints:</strong></p>