mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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180 lines
18 KiB
JSON
180 lines
18 KiB
JSON
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"questionId": "3519",
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"title": "Find the Number of Winning Players",
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"content": "<p>You are given an integer <code>n</code> representing the number of players in a game and a 2D array <code>pick</code> where <code>pick[i] = [x<sub>i</sub>, y<sub>i</sub>]</code> represents that the player <code>x<sub>i</sub></code> picked a ball of color <code>y<sub>i</sub></code>.</p>\n\n<p>Player <code>i</code> <strong>wins</strong> the game if they pick <strong>strictly more</strong> than <code>i</code> balls of the <strong>same</strong> color. In other words,</p>\n\n<ul>\n\t<li>Player 0 wins if they pick any ball.</li>\n\t<li>Player 1 wins if they pick at least two balls of the <em>same</em> color.</li>\n\t<li>...</li>\n\t<li>Player <code>i</code> wins if they pick at least<code>i + 1</code> balls of the <em>same</em> color.</li>\n</ul>\n\n<p>Return the number of players who <strong>win</strong> the game.</p>\n\n<p><strong>Note</strong> that <em>multiple</em> players can win the game.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">n = 4, pick = [[0,0],[1,0],[1,0],[2,1],[2,1],[2,0]]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">2</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>Player 0 and player 1 win the game, while players 2 and 3 do not win.</p>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">n = 5, pick = [[1,1],[1,2],[1,3],[1,4]]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">0</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>No player wins the game.</p>\n</div>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">n = 5, pick = [[1,1],[2,4],[2,4],[2,4]]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">1</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>Player 2 wins the game by picking 3 balls with color 4.</p>\n</div>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>2 <= n <= 10</code></li>\n\t<li><code>1 <= pick.length <= 100</code></li>\n\t<li><code>pick[i].length == 2</code></li>\n\t<li><code>0 <= x<sub>i</sub> <= n - 1 </code></li>\n\t<li><code>0 <= y<sub>i</sub> <= 10</code></li>\n</ul>\n",
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"Keep track of the number of balls of each color for each user using hashing.",
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"Find the maximum color that occurred for each player."
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