deploy: 22ce977

Author: yanglbme

en/lc/2116/index.html

@@ -54033,9 +54033,9 @@
       <ul class="md-nav__list">
 
           <li class="md-nav__item">
-  <a href="#solution-1" class="md-nav__link">
+  <a href="#solution-1-greedy-two-passes" class="md-nav__link">
     <span class="md-ellipsis">
-      Solution 1
+      Solution 1: Greedy + Two Passes
     </span>
   </a>
 
@@ -86791,7 +86791,7 @@ <h2 id="description">Description</h2>
 <pre>
 <strong>Input:</strong> s = &quot;)&quot;, locked = &quot;0&quot;
 <strong>Output:</strong> false
-<strong>Explanation:</strong> locked permits us to change s[0]. 
+<strong>Explanation:</strong> locked permits us to change s[0].
 Changing s[0] to either &#39;(&#39; or &#39;)&#39; will not make s valid.
 </pre>
 
@@ -86800,7 +86800,7 @@ <h2 id="description">Description</h2>
 <pre>
 <strong>Input:</strong> s = &quot;(((())(((())&quot;, locked = &quot;111111010111&quot;
 <strong>Output:</strong> false
-<strong>Explanation:</strong> locked permits us to change s[6] and s[8]. 
+<strong>Explanation:</strong> locked permits us to change s[6] and s[8].
 We change s[6] and s[8] to &#39;)&#39; to make s valid.
 </pre>
 
@@ -86819,8 +86819,18 @@ <h2 id="description">Description</h2>
 <h2 id="solutions">Solutions</h2>
 <!-- solution:start -->
 
-<h3 id="solution-1">Solution 1</h3>
-<div class="tabbed-set tabbed-alternate" data-tabs="1:4"><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" /><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></div>
+<h3 id="solution-1-greedy-two-passes">Solution 1: Greedy + Two Passes</h3>
+<p>We observe that a string of odd length cannot be a valid parentheses string because there will always be one unmatched parenthesis. Therefore, if the length of the string <span class="arithmatex">\(s\)</span> is odd, return <span class="arithmatex">\(\textit{false}\)</span> immediately.</p>
+<p>Next, we perform two passes.</p>
+<p>The first pass goes from left to right, checking if all <code>'('</code> parentheses can be matched by <code>')'</code> or changeable parentheses. If not, return <span class="arithmatex">\(\textit{false}\)</span>.</p>
+<p>The second pass goes from right to left, checking if all <code>')'</code> parentheses can be matched by <code>'('</code> or changeable parentheses. If not, return <span class="arithmatex">\(\textit{false}\)</span>.</p>
+<p>If both passes complete successfully, it means all parentheses can be matched, and the string <span class="arithmatex">\(s\)</span> is a valid parentheses string. Return <span class="arithmatex">\(\textit{true}\)</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">\(s\)</span>. The space complexity is <span class="arithmatex">\(O(1)\)</span>.</p>
+<p>Similar problems:</p>
+<ul>
+<li><a href="https://github.com/doocs/leetcode/blob/main/solution/0600-0699/0678.Valid%20Parenthesis%20String/README_EN.md">678. Valid Parenthesis String</a></li>
+</ul>
+<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-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>
@@ -87046,6 +87056,62 @@ <h3 id="solution-1">Solution 1</h3>
 <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>
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+<span class="normal">25</span>
+<span class="normal">26</span>
+<span class="normal">27</span></pre></div></td><td class="code"><div><pre><span></span><code><span class="kd">function</span><span class="w"> </span><span class="nx">canBeValid</span><span class="p">(</span><span class="nx">s</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">,</span><span class="w"> </span><span class="nx">locked</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">)</span><span class="o">:</span><span class="w"> </span><span class="kt">boolean</span><span class="w"> </span><span class="p">{</span>
+<span class="w">    </span><span class="kd">const</span><span class="w"> </span><span class="nx">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">s</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+<span class="w">    </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">n</span><span class="w"> </span><span class="o">&amp;</span><span class="w"> </span><span class="mf">1</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">        </span><span class="k">return</span><span class="w"> </span><span class="kc">false</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="nx">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span>
+<span class="w">    </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="nx">n</span><span class="p">;</span><span class="w"> </span><span class="o">++</span><span class="nx">i</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="p">(</span><span class="nx">s</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="s1">&#39;(&#39;</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="nx">locked</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="s1">&#39;0&#39;</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">            </span><span class="o">++</span><span class="nx">x</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="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">x</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mf">0</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">            </span><span class="o">--</span><span class="nx">x</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="k">return</span><span class="w"> </span><span class="kc">false</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="nx">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span>
+<span class="w">    </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">n</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mf">1</span><span class="p">;</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">&gt;=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"> </span><span class="o">--</span><span class="nx">i</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="p">(</span><span class="nx">s</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="s1">&#39;)&#39;</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="nx">locked</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="s1">&#39;0&#39;</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">            </span><span class="o">++</span><span class="nx">x</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="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">x</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mf">0</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">            </span><span class="o">--</span><span class="nx">x</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="k">return</span><span class="w"> </span><span class="kc">false</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">return</span><span class="w"> </span><span class="kc">true</span><span class="p">;</span>
+<span class="p">}</span>
+</code></pre></div></td></tr></table></div>
+</div>
 </div>
 </div>
 <!-- solution:end -->