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2023-12-09 18:42:21 +08:00
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leetcode/problem/smallest-k-length-subsequence-with-occurrences-of-a-letter.html
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@@ -7,7 +7,7 @@
<p>A string <code>a</code> is <strong>lexicographically smaller</strong> than a string <code>b</code> if in the first position where <code>a</code> and <code>b</code> differ, string <code>a</code> has a letter that appears earlier in the alphabet than the corresponding letter in <code>b</code>.</p>
<p>&nbsp;</p>
<p><strong>Example 1:</strong></p>
<p><strong class="example">Example 1:</strong></p>
<pre>
<strong>Input:</strong> s = &quot;leet&quot;, k = 3, letter = &quot;e&quot;, repetition = 1
@@ -20,7 +20,7 @@
The lexicographically smallest subsequence among them is &quot;eet&quot;.
</pre>
<p><strong>Example 2:</strong></p>
<p><strong class="example">Example 2:</strong></p>
<img alt="example-2" src="https://assets.leetcode.com/uploads/2021/09/13/smallest-k-length-subsequence.png" style="width: 339px; height: 67px;" />
<pre>
<strong>Input:</strong> s = &quot;leetcode&quot;, k = 4, letter = &quot;e&quot;, repetition = 2
@@ -28,7 +28,7 @@ The lexicographically smallest subsequence among them is &quot;eet&quot;.
<strong>Explanation:</strong> &quot;ecde&quot; is the lexicographically smallest subsequence of length 4 that has the letter &quot;e&quot; appear at least 2 times.
</pre>
<p><strong>Example 3:</strong></p>
<p><strong class="example">Example 3:</strong></p>
<pre>
<strong>Input:</strong> s = &quot;bb&quot;, k = 2, letter = &quot;b&quot;, repetition = 2