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37 lines
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37 lines
1.0 KiB
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<p>Given an integer <code>num</code>, return <em>the number of digits in <code>num</code> that divide </em><code>num</code>.</p>
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<p>An integer <code>val</code> divides <code>nums</code> if <code>nums % val == 0</code>.</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 = 7
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<strong>Output:</strong> 1
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<strong>Explanation:</strong> 7 divides itself, hence the answer is 1.
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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 = 121
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<strong>Output:</strong> 2
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<strong>Explanation:</strong> 121 is divisible by 1, but not 2. Since 1 occurs twice as a digit, we return 2.
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</pre>
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<p><strong>Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> num = 1248
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<strong>Output:</strong> 4
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<strong>Explanation:</strong> 1248 is divisible by all of its digits, hence the answer is 4.
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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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<li><code>num</code> does not contain <code>0</code> as one of its digits.</li>
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</ul>
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