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<p>节点间通路。给定有向图,设计一个算法,找出两个节点之间是否存在一条路径。</p>
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<p><strong>示例1:</strong></p>
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<p><strong>示例 1:</strong></p>
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<pre><strong> 输入</strong>:n = 3, graph = [[0, 1], [0, 2], [1, 2], [1, 2]], start = 0, target = 2
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<pre>
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<strong> 输入</strong>:n = 3, graph = [[0, 1], [0, 2], [1, 2], [1, 2]], start = 0, target = 2
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<strong> 输出</strong>:true
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</pre>
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<p><strong>示例2:</strong></p>
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<p><strong>示例 2:</strong></p>
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<pre><strong> 输入</strong>:n = 5, graph = [[0, 1], [0, 2], [0, 4], [0, 4], [0, 1], [1, 3], [1, 4], [1, 3], [2, 3], [3, 4]], start = 0, target = 4
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<strong> 输出</strong> true
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<pre>
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<strong> 输入</strong>:n = 5, graph = [[0, 1], [0, 2], [0, 4], [0, 4], [0, 1], [1, 3], [1, 4], [1, 3], [2, 3], [3, 4]], start = 0, target = 4
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<strong> 输出</strong>:true
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</pre>
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<p><strong>提示:</strong></p>
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