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48 lines
1.8 KiB
HTML
48 lines
1.8 KiB
HTML
<p>There are <code>8</code> prison cells in a row and each cell is either occupied or vacant.</p>
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<p>Each day, whether the cell is occupied or vacant changes according to the following rules:</p>
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<ul>
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<li>If a cell has two adjacent neighbors that are both occupied or both vacant, then the cell becomes occupied.</li>
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<li>Otherwise, it becomes vacant.</li>
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</ul>
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<p><strong>Note</strong> that because the prison is a row, the first and the last cells in the row can't have two adjacent neighbors.</p>
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<p>You are given an integer array <code>cells</code> where <code>cells[i] == 1</code> if the <code>i<sup>th</sup></code> cell is occupied and <code>cells[i] == 0</code> if the <code>i<sup>th</sup></code> cell is vacant, and you are given an integer <code>n</code>.</p>
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<p>Return the state of the prison after <code>n</code> days (i.e., <code>n</code> such changes described above).</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> cells = [0,1,0,1,1,0,0,1], n = 7
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<strong>Output:</strong> [0,0,1,1,0,0,0,0]
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<strong>Explanation:</strong> The following table summarizes the state of the prison on each day:
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Day 0: [0, 1, 0, 1, 1, 0, 0, 1]
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Day 1: [0, 1, 1, 0, 0, 0, 0, 0]
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Day 2: [0, 0, 0, 0, 1, 1, 1, 0]
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Day 3: [0, 1, 1, 0, 0, 1, 0, 0]
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Day 4: [0, 0, 0, 0, 0, 1, 0, 0]
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Day 5: [0, 1, 1, 1, 0, 1, 0, 0]
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Day 6: [0, 0, 1, 0, 1, 1, 0, 0]
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Day 7: [0, 0, 1, 1, 0, 0, 0, 0]
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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> cells = [1,0,0,1,0,0,1,0], n = 1000000000
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<strong>Output:</strong> [0,0,1,1,1,1,1,0]
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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>cells.length == 8</code></li>
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<li><code>cells[i]</code> is either <code>0</code> or <code>1</code>.</li>
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<li><code>1 <= n <= 10<sup>9</sup></code></li>
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</ul>
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