deploy: e2ef4bd

Author: yanglbme

en/lc/3305/index.html

@@ -86969,7 +86969,7 @@ <h3 id="solution-1-problem-transformation-sliding-window">Solution 1: Problem Tr
 <p>Traverse the string. If the current character is a vowel, add it to the hash table <span class="arithmatex">\(\textit{cnt}\)</span>; otherwise, increment <span class="arithmatex">\(\textit{x}\)</span> by one. If <span class="arithmatex">\(\textit{x} \ge k\)</span> and the size of the hash table <span class="arithmatex">\(\textit{cnt}\)</span> is <span class="arithmatex">\(5\)</span>, it means the current window meets the conditions. We then move the left boundary in a loop until the window no longer meets the conditions. At this point, all substrings ending at the right boundary <span class="arithmatex">\(\textit{r}\)</span> and with the left boundary in the range <span class="arithmatex">\([0, .. \textit{l} - 1]\)</span> meet the conditions, totaling <span class="arithmatex">\(\textit{l}\)</span> substrings. We add <span class="arithmatex">\(\textit{l}\)</span> to the answer. Continue traversing the string until the end, and we get <span class="arithmatex">\(\textit{f}(k)\)</span>.</p>
 <p>Finally, we return <span class="arithmatex">\(\textit{f}(k) - \textit{f}(k + 1)\)</span>.</p>
 <p>The time complexity is <span class="arithmatex">\(O(n)\)</span>, where <span class="arithmatex">\(n\)</span> is the length of the string <span class="arithmatex">\(\textit{word}\)</span>. The space complexity is <span class="arithmatex">\(O(1)\)</span>.</p>
-<div class="tabbed-set tabbed-alternate" data-tabs="1:5"><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><input id="__tabbed_1_3" name="__tabbed_1" type="radio" /><input id="__tabbed_1_4" name="__tabbed_1" type="radio" /><input id="__tabbed_1_5" name="__tabbed_1" type="radio" /><div class="tabbed-labels"><label for="__tabbed_1_1">Python3</label><label for="__tabbed_1_2">Java</label><label for="__tabbed_1_3">C++</label><label for="__tabbed_1_4">Go</label><label for="__tabbed_1_5">TypeScript</label></div>
+<div class="tabbed-set tabbed-alternate" data-tabs="1:6"><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><input id="__tabbed_1_3" name="__tabbed_1" type="radio" /><input id="__tabbed_1_4" name="__tabbed_1" type="radio" /><input id="__tabbed_1_5" name="__tabbed_1" type="radio" /><input id="__tabbed_1_6" name="__tabbed_1" type="radio" /><div class="tabbed-labels"><label for="__tabbed_1_1">Python3</label><label for="__tabbed_1_2">Java</label><label for="__tabbed_1_3">C++</label><label for="__tabbed_1_4">Go</label><label for="__tabbed_1_5">TypeScript</label><label for="__tabbed_1_6">Rust</label></div>
 <div class="tabbed-content">
 <div class="tabbed-block">
 <div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"> 1</span>
@@ -87303,6 +87303,86 @@ <h3 id="solution-1-problem-transformation-sliding-window">Solution 1: Problem Tr
 <span class="p">}</span>
 </code></pre></div></td></tr></table></div>
 </div>
+<div class="tabbed-block">
+<div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"> 1</span>
+<span class="normal"> 2</span>
+<span class="normal"> 3</span>
+<span class="normal"> 4</span>
+<span class="normal"> 5</span>
+<span class="normal"> 6</span>
+<span class="normal"> 7</span>
+<span class="normal"> 8</span>
+<span class="normal"> 9</span>
+<span class="normal">10</span>
+<span class="normal">11</span>
+<span class="normal">12</span>
+<span class="normal">13</span>
+<span class="normal">14</span>
+<span class="normal">15</span>
+<span class="normal">16</span>
+<span class="normal">17</span>
+<span class="normal">18</span>
+<span class="normal">19</span>
+<span class="normal">20</span>
+<span class="normal">21</span>
+<span class="normal">22</span>
+<span class="normal">23</span>
+<span class="normal">24</span>
+<span class="normal">25</span>
+<span class="normal">26</span>
+<span class="normal">27</span>
+<span class="normal">28</span>
+<span class="normal">29</span>
+<span class="normal">30</span>
+<span class="normal">31</span>
+<span class="normal">32</span>
+<span class="normal">33</span>
+<span class="normal">34</span>
+<span class="normal">35</span>
+<span class="normal">36</span>
+<span class="normal">37</span>
+<span class="normal">38</span>
+<span class="normal">39</span></pre></div></td><td class="code"><div><pre><span></span><code><span class="k">impl</span><span class="w"> </span><span class="n">Solution</span><span class="w"> </span><span class="p">{</span>
+<span class="w">    </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">count_of_substrings</span><span class="p">(</span><span class="n">word</span><span class="p">:</span><span class="w"> </span><span class="nb">String</span><span class="p">,</span><span class="w"> </span><span class="n">k</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="p">-&gt;</span><span class="w"> </span><span class="kt">i32</span><span class="w"> </span><span class="p">{</span>
+<span class="w">        </span><span class="k">fn</span><span class="w"> </span><span class="nf">f</span><span class="p">(</span><span class="n">word</span><span class="p">:</span><span class="w"> </span><span class="kp">&amp;</span><span class="nb">Vec</span><span class="o">&lt;</span><span class="kt">char</span><span class="o">&gt;</span><span class="p">,</span><span class="w"> </span><span class="n">k</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="p">-&gt;</span><span class="w"> </span><span class="kt">i32</span><span class="w"> </span><span class="p">{</span>
+<span class="w">            </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">ans</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
+<span class="w">            </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">l</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
+<span class="w">            </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
+<span class="w">            </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">cnt</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">std</span><span class="p">::</span><span class="n">collections</span><span class="p">::</span><span class="n">HashMap</span><span class="p">::</span><span class="n">new</span><span class="p">();</span>
+
+<span class="w">            </span><span class="kd">let</span><span class="w"> </span><span class="n">is_vowel</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="o">|</span><span class="n">c</span><span class="p">:</span><span class="w"> </span><span class="kt">char</span><span class="o">|</span><span class="w"> </span><span class="fm">matches!</span><span class="p">(</span><span class="n">c</span><span class="p">,</span><span class="w"> </span><span class="sc">&#39;a&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;e&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;i&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;o&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="sc">&#39;u&#39;</span><span class="p">);</span>
+
+<span class="w">            </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">r</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">c</span><span class="p">)</span><span class="w"> </span><span class="k">in</span><span class="w"> </span><span class="n">word</span><span class="p">.</span><span class="n">iter</span><span class="p">().</span><span class="n">enumerate</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
+<span class="w">                </span><span class="k">if</span><span class="w"> </span><span class="n">is_vowel</span><span class="p">(</span><span class="n">c</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">                    </span><span class="o">*</span><span class="n">cnt</span><span class="p">.</span><span class="n">entry</span><span class="p">(</span><span class="n">c</span><span class="p">).</span><span class="n">or_insert</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="o">+=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
+<span class="w">                </span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span>
+<span class="w">                    </span><span class="n">x</span><span class="w"> </span><span class="o">+=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
+<span class="w">                </span><span class="p">}</span>
+
+<span class="w">                </span><span class="k">while</span><span class="w"> </span><span class="n">x</span><span class="w"> </span><span class="o">&gt;=</span><span class="w"> </span><span class="n">k</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">cnt</span><span class="p">.</span><span class="n">len</span><span class="p">()</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">5</span><span class="w"> </span><span class="p">{</span>
+<span class="w">                    </span><span class="kd">let</span><span class="w"> </span><span class="n">d</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">word</span><span class="p">[</span><span class="n">l</span><span class="p">];</span>
+<span class="w">                    </span><span class="n">l</span><span class="w"> </span><span class="o">+=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
+<span class="w">                    </span><span class="k">if</span><span class="w"> </span><span class="n">is_vowel</span><span class="p">(</span><span class="n">d</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">                        </span><span class="kd">let</span><span class="w"> </span><span class="n">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">cnt</span><span class="p">.</span><span class="n">entry</span><span class="p">(</span><span class="n">d</span><span class="p">).</span><span class="n">or_insert</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span>
+<span class="w">                        </span><span class="o">*</span><span class="n">count</span><span class="w"> </span><span class="o">-=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
+<span class="w">                        </span><span class="k">if</span><span class="w"> </span><span class="o">*</span><span class="n">count</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="w"> </span><span class="p">{</span>
+<span class="w">                            </span><span class="n">cnt</span><span class="p">.</span><span class="n">remove</span><span class="p">(</span><span class="o">&amp;</span><span class="n">d</span><span class="p">);</span>
+<span class="w">                        </span><span class="p">}</span>
+<span class="w">                    </span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span>
+<span class="w">                        </span><span class="n">x</span><span class="w"> </span><span class="o">-=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
+<span class="w">                    </span><span class="p">}</span>
+<span class="w">                </span><span class="p">}</span>
+<span class="w">                </span><span class="n">ans</span><span class="w"> </span><span class="o">+=</span><span class="w"> </span><span class="n">l</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">i32</span><span class="p">;</span>
+<span class="w">            </span><span class="p">}</span>
+<span class="w">            </span><span class="n">ans</span>
+<span class="w">        </span><span class="p">}</span>
+
+<span class="w">        </span><span class="kd">let</span><span class="w"> </span><span class="n">chars</span><span class="p">:</span><span class="w"> </span><span class="nb">Vec</span><span class="o">&lt;</span><span class="kt">char</span><span class="o">&gt;</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">word</span><span class="p">.</span><span class="n">chars</span><span class="p">().</span><span class="n">collect</span><span class="p">();</span>
+<span class="w">        </span><span class="n">f</span><span class="p">(</span><span class="o">&amp;</span><span class="n">chars</span><span class="p">,</span><span class="w"> </span><span class="n">k</span><span class="p">)</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="n">f</span><span class="p">(</span><span class="o">&amp;</span><span class="n">chars</span><span class="p">,</span><span class="w"> </span><span class="n">k</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span>
+<span class="w">    </span><span class="p">}</span>
+<span class="p">}</span>
+</code></pre></div></td></tr></table></div>
+</div>
 </div>
 </div>
 <!-- solution:end -->