add-binary

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Add Binary

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addBinary

Given two binary strings <code>a</code> and <code>b</code>, return their sum as a binary string.

&nbsp;
Example 1:
<pre>Input: a = "11", b = "1"
Output: "100"
</pre>Example 2:
<pre>Input: a = "1010", b = "1011"
Output: "10101"
</pre>
&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= a.length, b.length &lt;= 104</code></li>
	<li><code>a</code> and <code>b</code> consist&nbsp;only of <code>&#39;0&#39;</code> or <code>&#39;1&#39;</code> characters.</li>
	<li>Each string does not contain leading zeros except for the zero itself.</li>
</ul>

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