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40 lines
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40 lines
2.2 KiB
HTML
<p>You are given two <strong>0-indexed binary</strong> strings <code>s</code> and <code>target</code> of the same length <code>n</code>. You can do the following operation on <code>s</code> <strong>any</strong> number of times:</p>
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<ul>
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<li>Choose two <strong>different</strong> indices <code>i</code> and <code>j</code> where <code>0 <= i, j < n</code>.</li>
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<li>Simultaneously, replace <code>s[i]</code> with (<code>s[i]</code> <strong>OR</strong> <code>s[j]</code>) and <code>s[j]</code> with (<code>s[i]</code> <strong>XOR</strong> <code>s[j]</code>).</li>
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</ul>
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<p>For example, if <code>s = "0110"</code>, you can choose <code>i = 0</code> and <code>j = 2</code>, then simultaneously replace <code>s[0]</code> with (<code>s[0]</code> <strong>OR</strong> <code>s[2]</code> = <code>0</code> <strong>OR</strong> <code>1</code> = <code>1</code>), and <code>s[2]</code> with (<code>s[0]</code> <strong>XOR</strong> <code>s[2]</code> = <code>0</code> <strong>XOR</strong> <code>1</code> = <code>1</code>), so we will have <code>s = "1110"</code>.</p>
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<p>Return <code>true</code> <em>if you can make the string </em><code>s</code><em> equal to </em><code>target</code><em>, or </em><code>false</code><em> otherwise</em>.</p>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> s = "1010", target = "0110"
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<strong>Output:</strong> true
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<strong>Explanation:</strong> We can do the following operations:
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- Choose i = 2 and j = 0. We have now s = "<strong><u>0</u></strong>0<strong><u>1</u></strong>0".
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- Choose i = 2 and j = 1. We have now s = "0<strong><u>11</u></strong>0".
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Since we can make s equal to target, we return true.
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</pre>
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<p><strong class="example">Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> s = "11", target = "00"
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<strong>Output:</strong> false
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<strong>Explanation:</strong> It is not possible to make s equal to target with any number of operations.
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li><code>n == s.length == target.length</code></li>
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<li><code>2 <= n <= 10<sup>5</sup></code></li>
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<li><code>s</code> and <code>target</code> consist of only the digits <code>0</code> and <code>1</code>.</li>
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</ul>
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