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https://gitee.com/coder-xiaomo/leetcode-problemset
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52 lines
1.3 KiB
HTML
52 lines
1.3 KiB
HTML
<p>The string <code>"PAYPALISHIRING"</code> is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility)</p>
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<pre>
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P A H N
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A P L S I I G
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Y I R
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</pre>
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<p>And then read line by line: <code>"PAHNAPLSIIGYIR"</code></p>
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<p>Write the code that will take a string and make this conversion given a number of rows:</p>
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<pre>
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string convert(string s, int numRows);
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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> s = "PAYPALISHIRING", numRows = 3
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<strong>Output:</strong> "PAHNAPLSIIGYIR"
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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> s = "PAYPALISHIRING", numRows = 4
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<strong>Output:</strong> "PINALSIGYAHRPI"
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<strong>Explanation:</strong>
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P I N
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A L S I G
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Y A H R
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P I
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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> s = "A", numRows = 1
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<strong>Output:</strong> "A"
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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 <= s.length <= 1000</code></li>
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<li><code>s</code> consists of English letters (lower-case and upper-case), <code>','</code> and <code>'.'</code>.</li>
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<li><code>1 <= numRows <= 1000</code></li>
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</ul>
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