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37 lines
1.8 KiB
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37 lines
1.8 KiB
HTML
<p>You are given two strings <code>current</code> and <code>correct</code> representing two <strong>24-hour times</strong>.</p>
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<p>24-hour times are formatted as <code>"HH:MM"</code>, where <code>HH</code> is between <code>00</code> and <code>23</code>, and <code>MM</code> is between <code>00</code> and <code>59</code>. The earliest 24-hour time is <code>00:00</code>, and the latest is <code>23:59</code>.</p>
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<p>In one operation you can increase the time <code>current</code> by <code>1</code>, <code>5</code>, <code>15</code>, or <code>60</code> minutes. You can perform this operation <strong>any</strong> number of times.</p>
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<p>Return <em>the <strong>minimum number of operations</strong> needed to convert </em><code>current</code><em> to </em><code>correct</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> current = "02:30", correct = "04:35"
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<strong>Output:</strong> 3
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<strong>Explanation:
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</strong>We can convert current to correct in 3 operations as follows:
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- Add 60 minutes to current. current becomes "03:30".
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- Add 60 minutes to current. current becomes "04:30".
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- Add 5 minutes to current. current becomes "04:35".
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It can be proven that it is not possible to convert current to correct in fewer than 3 operations.</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> current = "11:00", correct = "11:01"
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<strong>Output:</strong> 1
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<strong>Explanation:</strong> We only have to add one minute to current, so the minimum number of operations needed is 1.
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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>current</code> and <code>correct</code> are in the format <code>"HH:MM"</code></li>
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<li><code>current <= correct</code></li>
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</ul>
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