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33 lines
1.3 KiB
HTML
33 lines
1.3 KiB
HTML
<p>You are given a positive integer <code>num</code>. You may swap any two digits of <code>num</code> that have the same <strong>parity</strong> (i.e. both odd digits or both even digits).</p>
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<p>Return<em> the <strong>largest</strong> possible value of </em><code>num</code><em> after <strong>any</strong> number of swaps.</em></p>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> num = 1234
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<strong>Output:</strong> 3412
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<strong>Explanation:</strong> Swap the digit 3 with the digit 1, this results in the number 3214.
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Swap the digit 2 with the digit 4, this results in the number 3412.
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Note that there may be other sequences of swaps but it can be shown that 3412 is the largest possible number.
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Also note that we may not swap the digit 4 with the digit 1 since they are of different parities.
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> num = 65875
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<strong>Output:</strong> 87655
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<strong>Explanation:</strong> Swap the digit 8 with the digit 6, this results in the number 85675.
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Swap the first digit 5 with the digit 7, this results in the number 87655.
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Note that there may be other sequences of swaps but it can be shown that 87655 is the largest possible number.
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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>1 <= num <= 10<sup>9</sup></code></li>
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</ul>
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