mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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184 lines
27 KiB
JSON
184 lines
27 KiB
JSON
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"categoryTitle": "Algorithms",
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"title": "Distribute Coins in Binary Tree",
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"content": "<p>You are given the <code>root</code> of a binary tree with <code>n</code> nodes where each <code>node</code> in the tree has <code>node.val</code> coins. There are <code>n</code> coins in total throughout the whole tree.</p>\n\n<p>In one move, we may choose two adjacent nodes and move one coin from one node to another. A move may be from parent to child, or from child to parent.</p>\n\n<p>Return <em>the <strong>minimum</strong> number of moves required to make every node have <strong>exactly</strong> one coin</em>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/01/18/tree1.png\" style=\"width: 250px; height: 236px;\" />\n<pre>\n<strong>Input:</strong> root = [3,0,0]\n<strong>Output:</strong> 2\n<strong>Explanation: </strong>From the root of the tree, we move one coin to its left child, and one coin to its right child.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/01/18/tree2.png\" style=\"width: 250px; height: 236px;\" />\n<pre>\n<strong>Input:</strong> root = [0,3,0]\n<strong>Output:</strong> 3\n<strong>Explanation: </strong>From the left child of the root, we move two coins to the root [taking two moves]. Then, we move one coin from the root of the tree to the right child.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li>The number of nodes in the tree is <code>n</code>.</li>\n\t<li><code>1 <= n <= 100</code></li>\n\t<li><code>0 <= Node.val <= n</code></li>\n\t<li>The sum of all <code>Node.val</code> is <code>n</code>.</li>\n</ul>\n",
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"translatedTitle": "在二叉树中分配硬币",
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"translatedContent": "<p>给你一个有 <code>n</code> 个结点的二叉树的根结点 <code>root</code> ，其中树中每个结点 <code>node</code> 都对应有 <code>node.val</code> 枚硬币。整棵树上一共有 <code>n</code> 枚硬币。</p>\n\n<p>在一次移动中，我们可以选择两个相邻的结点，然后将一枚硬币从其中一个结点移动到另一个结点。移动可以是从父结点到子结点，或者从子结点移动到父结点。</p>\n\n<p>返回使每个结点上 <strong>只有</strong> 一枚硬币所需的 <strong>最少</strong> 移动次数。</p>\n\n<p> </p>\n\n<p><strong class=\"example\">示例 1：</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/01/18/tree1.png\" style=\"width: 250px; height: 236px;\" />\n<pre>\n<strong>输入：</strong>root = [3,0,0]\n<strong>输出：</strong>2\n<strong>解释：</strong>一枚硬币从根结点移动到左子结点，一枚硬币从根结点移动到右子结点。\n</pre>\n\n<p><strong class=\"example\">示例 2：</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/01/18/tree2.png\" style=\"width: 250px; height: 236px;\" />\n<pre>\n<strong>输入：</strong>root = [0,3,0]\n<strong>输出：</strong>3\n<strong>解释：</strong>将两枚硬币从根结点的左子结点移动到根结点（两次移动）。然后，将一枚硬币从根结点移动到右子结点。\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li>树中节点的数目为 <code>n</code></li>\n\t<li><code>1 <= n <= 100</code></li>\n\t<li><code>0 <= Node.val <= n</code></li>\n\t<li>所有 <code>Node.val</code> 的值之和是 <code>n</code></li>\n</ul>\n",
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