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46 lines
976 B
HTML
46 lines
976 B
HTML
<p>Given a string <code>columnTitle</code> that represents the column title as appear in an Excel sheet, return <em>its corresponding column number</em>.</p>
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<p>For example:</p>
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<pre>
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A -> 1
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B -> 2
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C -> 3
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...
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Z -> 26
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AA -> 27
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AB -> 28
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...
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</pre>
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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> columnTitle = "A"
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<strong>Output:</strong> 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> columnTitle = "AB"
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<strong>Output:</strong> 28
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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> columnTitle = "ZY"
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<strong>Output:</strong> 701
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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 <= columnTitle.length <= 7</code></li>
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<li><code>columnTitle</code> consists only of uppercase English letters.</li>
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<li><code>columnTitle</code> is in the range <code>["A", "FXSHRXW"]</code>.</li>
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</ul>
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