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40 lines
1.4 KiB
HTML
40 lines
1.4 KiB
HTML
<p>Given two strings <code>s</code> and <code>t</code>, return <code>true</code> <em>if they are equal when both are typed into empty text editors</em>. <code>'#'</code> means a backspace character.</p>
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<p>Note that after backspacing an empty text, the text will continue empty.</p>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> s = "ab#c", t = "ad#c"
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<strong>Output:</strong> true
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<strong>Explanation:</strong> Both s and t become "ac".
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</pre>
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<p><strong class="example">Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> s = "ab##", t = "c#d#"
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<strong>Output:</strong> true
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<strong>Explanation:</strong> Both s and t become "".
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</pre>
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<p><strong class="example">Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> s = "a#c", t = "b"
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<strong>Output:</strong> false
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<strong>Explanation:</strong> s becomes "c" while t becomes "b".
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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><span>1 <= s.length, t.length <= 200</span></code></li>
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<li><span><code>s</code> and <code>t</code> only contain lowercase letters and <code>'#'</code> characters.</span></li>
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</ul>
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<p> </p>
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<p><strong>Follow up:</strong> Can you solve it in <code>O(n)</code> time and <code>O(1)</code> space?</p>
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