Maximum Number of Balloons
<p>Given a string <code>text</code>, you want to use the characters of <code>text</code> to form as many instances of the word <strong>&quot;balloon&quot;</strong> as possible.</p>

<p>You can use each character in <code>text</code> <strong>at most once</strong>. Return the maximum number of instances that can be formed.</p>

<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>

<p><strong><img alt="" src="https://fastly.jsdelivr.net/gh/doocs/leetcode@main/solution/1100-1199/1189.Maximum%20Number%20of%20Balloons/images/1536_ex1_upd.jpg" style="width: 132px; height: 35px;" /></strong></p>

<pre>
<strong>Input:</strong> text = &quot;nlaebolko&quot;
<strong>Output:</strong> 1
</pre>

<p><strong class="example">Example 2:</strong></p>

<p><strong><img alt="" src="https://fastly.jsdelivr.net/gh/doocs/leetcode@main/solution/1100-1199/1189.Maximum%20Number%20of%20Balloons/images/1536_ex2_upd.jpg" style="width: 267px; height: 35px;" /></strong></p>

<pre>
<strong>Input:</strong> text = &quot;loonbalxballpoon&quot;
<strong>Output:</strong> 2
</pre>

<p><strong class="example">Example 3:</strong></p>

<pre>
<strong>Input:</strong> text = &quot;leetcode&quot;
<strong>Output:</strong> 0
</pre>

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>1 &lt;= text.length &lt;= 10<sup>4</sup></code></li>
	<li><code>text</code> consists of lower case English letters only.</li>
</ul>

<p>&nbsp;</p>
<p><strong>Note:</strong> This question is the same as <a href="https://leetcode.com/problems/rearrange-characters-to-make-target-string/description/" target="_blank"> 2287: Rearrange Characters to Make Target String.</a></p>
Hash Table; String; Counting
func maxNumberOfBalloons(text string) int {
	cnt := [26]int{}
	for _, c := range text {
		cnt[c-'a']++
	}
	cnt['l'-'a'] >>= 1
	cnt['o'-'a'] >>= 1
	ans := 1 << 30
	for _, c := range "balon" {
		if x := cnt[c-'a']; ans > x {
			ans = x
		}
	}
	return ans
}