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53 lines
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53 lines
2.0 KiB
HTML
<p>You are given an integer array <code>matches</code> where <code>matches[i] = [winner<sub>i</sub>, loser<sub>i</sub>]</code> indicates that the player <code>winner<sub>i</sub></code> defeated player <code>loser<sub>i</sub></code> in a match.</p>
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<p>Return <em>a list </em><code>answer</code><em> of size </em><code>2</code><em> where:</em></p>
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<ul>
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<li><code>answer[0]</code> is a list of all players that have <strong>not</strong> lost any matches.</li>
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<li><code>answer[1]</code> is a list of all players that have lost exactly <strong>one</strong> match.</li>
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</ul>
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<p>The values in the two lists should be returned in <strong>increasing</strong> order.</p>
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<p><strong>Note:</strong></p>
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<ul>
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<li>You should only consider the players that have played <strong>at least one</strong> match.</li>
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<li>The testcases will be generated such that <strong>no</strong> two matches will have the <strong>same</strong> outcome.</li>
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</ul>
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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> matches = [[1,3],[2,3],[3,6],[5,6],[5,7],[4,5],[4,8],[4,9],[10,4],[10,9]]
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<strong>Output:</strong> [[1,2,10],[4,5,7,8]]
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<strong>Explanation:</strong>
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Players 1, 2, and 10 have not lost any matches.
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Players 4, 5, 7, and 8 each have lost one match.
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Players 3, 6, and 9 each have lost two matches.
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Thus, answer[0] = [1,2,10] and answer[1] = [4,5,7,8].
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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> matches = [[2,3],[1,3],[5,4],[6,4]]
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<strong>Output:</strong> [[1,2,5,6],[]]
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<strong>Explanation:</strong>
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Players 1, 2, 5, and 6 have not lost any matches.
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Players 3 and 4 each have lost two matches.
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Thus, answer[0] = [1,2,5,6] and answer[1] = [].
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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 <= matches.length <= 10<sup>5</sup></code></li>
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<li><code>matches[i].length == 2</code></li>
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<li><code>1 <= winner<sub>i</sub>, loser<sub>i</sub> <= 10<sup>5</sup></code></li>
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<li><code>winner<sub>i</sub> != loser<sub>i</sub></code></li>
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<li>All <code>matches[i]</code> are <strong>unique</strong>.</li>
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</ul>
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