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en/lc/2255/index.html

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@@ -87233,7 +87233,7 @@ <h2 id="description">Description</h2>
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<strong>Input:</strong> words = [&quot;a&quot;,&quot;a&quot;], s = &quot;aa&quot;
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<strong>Output:</strong> 2
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<strong>Explanation:
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</strong>Both of the strings are a prefix of s.
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</strong>Both of the strings are a prefix of s.
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Note that the same string can occur multiple times in words, and it should be counted each time.</pre>
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<p>&nbsp;</p>
@@ -87254,7 +87254,7 @@ <h3 id="solution-1-traversal-counting">Solution 1: Traversal Counting</h3>
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<p>We directly traverse the array words, and for each string w, we check if s starts with w as a prefix. If it does, we increment the answer by one.</p>
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<p>After the traversal, we return the answer.</p>
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<p>The time complexity is <span class="arithmatex">\(O(m \times n)\)</span>, where <span class="arithmatex">\(m\)</span> and <span class="arithmatex">\(n\)</span> are the lengths of the array words and the string s, respectively. The space complexity is <span class="arithmatex">\(O(1)\)</span>.</p>
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<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>
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<div class="tabbed-set tabbed-alternate" data-tabs="1:7"><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" /><input id="__tabbed_1_7" 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><label for="__tabbed_1_7">C#</label></div>
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<div class="tabbed-content">
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<div class="tabbed-block">
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<div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span>
@@ -87336,6 +87336,30 @@ <h3 id="solution-1-traversal-counting">Solution 1: Traversal Counting</h3>
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<span class="p">}</span>
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</code></pre></div></td></tr></table></div>
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</div>
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<div class="tabbed-block">
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<div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span>
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<span class="normal">2</span>
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<span class="normal">3</span>
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<span class="normal">4</span>
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<span class="normal">5</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>
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<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_prefixes</span><span class="p">(</span><span class="n">words</span><span class="p">:</span><span class="w"> </span><span class="nb">Vec</span><span class="o">&lt;</span><span class="nb">String</span><span class="o">&gt;</span><span class="p">,</span><span class="w"> </span><span class="n">s</span><span class="p">:</span><span class="w"> </span><span class="nb">String</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>
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<span class="w"> </span><span class="n">words</span><span class="p">.</span><span class="n">iter</span><span class="p">().</span><span class="n">filter</span><span class="p">(</span><span class="o">|</span><span class="n">w</span><span class="o">|</span><span class="w"> </span><span class="n">s</span><span class="p">.</span><span class="n">starts_with</span><span class="p">(</span><span class="n">w</span><span class="p">.</span><span class="n">as_str</span><span class="p">())).</span><span class="n">count</span><span class="p">()</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">i32</span>
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<span class="w"> </span><span class="p">}</span>
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<span class="p">}</span>
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</code></pre></div></td></tr></table></div>
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</div>
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<div class="tabbed-block">
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<div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span>
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<span class="normal">2</span>
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<span class="normal">3</span>
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<span class="normal">4</span>
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<span class="normal">5</span></pre></div></td><td class="code"><div><pre><span></span><code><span class="k">public</span><span class="w"> </span><span class="k">class</span><span class="w"> </span><span class="nc">Solution</span><span class="w"> </span><span class="p">{</span>
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<span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">CountPrefixes</span><span class="p">(</span><span class="kt">string</span><span class="p">[]</span><span class="w"> </span><span class="n">words</span><span class="p">,</span><span class="w"> </span><span class="kt">string</span><span class="w"> </span><span class="n">s</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
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<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">words</span><span class="p">.</span><span class="n">Count</span><span class="p">(</span><span class="n">w</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="n">s</span><span class="p">.</span><span class="n">StartsWith</span><span class="p">(</span><span class="n">w</span><span class="p">));</span>
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<span class="w"> </span><span class="p">}</span>
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<span class="p">}</span>
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</code></pre></div></td></tr></table></div>
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</div>
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</div>
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</div>
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<!-- solution:end -->

en/search/search_index.json

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lc/2255/index.html

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@@ -92047,10 +92047,10 @@ <h2 id="_2">解法</h2>
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<!-- solution:start -->
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<h3 id="_3">方法一:遍历计数</h3>
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<p>我们直接遍历数组 <span class="arithmatex">\(words\)</span>,对于每个字符串 <span class="arithmatex">\(w\)</span>,判断 <span class="arithmatex">\(s\)</span> 是否以 <span class="arithmatex">\(w\)</span> 为前缀,如果是则答案加一。</p>
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<p>我们直接遍历数组 <span class="arithmatex">\(\textit{words}\)</span>,对于每个字符串 <span class="arithmatex">\(w\)</span>,判断 <span class="arithmatex">\(s\)</span> 是否以 <span class="arithmatex">\(w\)</span> 为前缀,如果是则答案加一。</p>
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<p>遍历结束后,返回答案即可。</p>
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<p>时间复杂度 <span class="arithmatex">\(O(m \times n)\)</span>,其中 <span class="arithmatex">\(m\)</span> 和 <span class="arithmatex">\(n\)</span> 分别是数组 <span class="arithmatex">\(words\)</span> 的长度和字符串 <span class="arithmatex">\(s\)</span> 的长度。空间复杂度 <span class="arithmatex">\(O(1)\)</span>。</p>
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<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>
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<p>时间复杂度 <span class="arithmatex">\(O(m \times n)\)</span>,其中 <span class="arithmatex">\(m\)</span> 和 <span class="arithmatex">\(n\)</span> 分别是数组 <span class="arithmatex">\(\textit{words}\)</span> 的长度和字符串 <span class="arithmatex">\(s\)</span> 的长度。空间复杂度 <span class="arithmatex">\(O(1)\)</span>。</p>
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<div class="tabbed-set tabbed-alternate" data-tabs="1:7"><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" /><input id="__tabbed_1_7" 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><label for="__tabbed_1_7">C#</label></div>
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<div class="tabbed-content">
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<div class="tabbed-block">
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<div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span>
@@ -92132,6 +92132,30 @@ <h3 id="_3">方法一:遍历计数</h3>
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<span class="p">}</span>
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</code></pre></div></td></tr></table></div>
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</div>
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<div class="tabbed-block">
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<div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span>
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<span class="normal">2</span>
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<span class="normal">3</span>
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<span class="normal">4</span>
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<span class="normal">5</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>
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<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_prefixes</span><span class="p">(</span><span class="n">words</span><span class="p">:</span><span class="w"> </span><span class="nb">Vec</span><span class="o">&lt;</span><span class="nb">String</span><span class="o">&gt;</span><span class="p">,</span><span class="w"> </span><span class="n">s</span><span class="p">:</span><span class="w"> </span><span class="nb">String</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>
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<span class="w"> </span><span class="n">words</span><span class="p">.</span><span class="n">iter</span><span class="p">().</span><span class="n">filter</span><span class="p">(</span><span class="o">|</span><span class="n">w</span><span class="o">|</span><span class="w"> </span><span class="n">s</span><span class="p">.</span><span class="n">starts_with</span><span class="p">(</span><span class="n">w</span><span class="p">.</span><span class="n">as_str</span><span class="p">())).</span><span class="n">count</span><span class="p">()</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">i32</span>
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<span class="w"> </span><span class="p">}</span>
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<span class="p">}</span>
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</code></pre></div></td></tr></table></div>
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</div>
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<div class="tabbed-block">
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<div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal">1</span>
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<span class="normal">2</span>
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<span class="normal">3</span>
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<span class="normal">4</span>
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<span class="normal">5</span></pre></div></td><td class="code"><div><pre><span></span><code><span class="k">public</span><span class="w"> </span><span class="k">class</span><span class="w"> </span><span class="nc">Solution</span><span class="w"> </span><span class="p">{</span>
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<span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">CountPrefixes</span><span class="p">(</span><span class="kt">string</span><span class="p">[]</span><span class="w"> </span><span class="n">words</span><span class="p">,</span><span class="w"> </span><span class="kt">string</span><span class="w"> </span><span class="n">s</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
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<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">words</span><span class="p">.</span><span class="n">Count</span><span class="p">(</span><span class="n">w</span><span class="w"> </span><span class="o">=&gt;</span><span class="w"> </span><span class="n">s</span><span class="p">.</span><span class="n">StartsWith</span><span class="p">(</span><span class="n">w</span><span class="p">));</span>
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<span class="w"> </span><span class="p">}</span>
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<span class="p">}</span>
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</code></pre></div></td></tr></table></div>
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</div>
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</div>
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</div>
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<!-- solution:end -->

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