leetcode-problemset/leetcode-cn/originData/the-number-of-weak-characters-in-the-game.json

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            "title": "The Number of Weak Characters in the Game",
            "titleSlug": "the-number-of-weak-characters-in-the-game",
            "content": "<p>You are playing a game that contains multiple characters, and each of the characters has <strong>two</strong> main properties: <strong>attack</strong> and <strong>defense</strong>. You are given a 2D integer array <code>properties</code> where <code>properties[i] = [attack<sub>i</sub>, defense<sub>i</sub>]</code> represents the properties of the <code>i<sup>th</sup></code> character in the game.</p>\n\n<p>A character is said to be <strong>weak</strong> if any other character has <strong>both</strong> attack and defense levels <strong>strictly greater</strong> than this character&#39;s attack and defense levels. More formally, a character <code>i</code> is said to be <strong>weak</strong> if there exists another character <code>j</code> where <code>attack<sub>j</sub> &gt; attack<sub>i</sub></code> and <code>defense<sub>j</sub> &gt; defense<sub>i</sub></code>.</p>\n\n<p>Return <em>the number of <strong>weak</strong> characters</em>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> properties = [[5,5],[6,3],[3,6]]\n<strong>Output:</strong> 0\n<strong>Explanation:</strong> No character has strictly greater attack and defense than the other.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> properties = [[2,2],[3,3]]\n<strong>Output:</strong> 1\n<strong>Explanation:</strong> The first character is weak because the second character has a strictly greater attack and defense.\n</pre>\n\n<p><strong>Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> properties = [[1,5],[10,4],[4,3]]\n<strong>Output:</strong> 1\n<strong>Explanation:</strong> The third character is weak because the second character has a strictly greater attack and defense.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>2 &lt;= properties.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>properties[i].length == 2</code></li>\n\t<li><code>1 &lt;= attack<sub>i</sub>, defense<sub>i</sub> &lt;= 10<sup>5</sup></code></li>\n</ul>\n",
            "translatedTitle": "游戏中弱角色的数量",
            "translatedContent": "<p>你正在参加一个多角色游戏，每个角色都有两个主要属性：<strong>攻击</strong> 和 <strong>防御</strong> 。给你一个二维整数数组 <code>properties</code> ，其中 <code>properties[i] = [attack<sub>i</sub>, defense<sub>i</sub>]</code> 表示游戏中第 <code>i</code> 个角色的属性。</p>\n\n<p>如果存在一个其他角色的攻击和防御等级 <strong>都严格高于</strong> 该角色的攻击和防御等级，则认为该角色为 <strong>弱角色</strong> 。更正式地，如果认为角色 <code>i</code> <strong>弱于</strong> 存在的另一个角色 <code>j</code> ，那么 <code>attack<sub>j</sub> &gt; attack<sub>i</sub></code> 且 <code>defense<sub>j</sub> &gt; defense<sub>i</sub></code> 。</p>\n\n<p>返回 <strong>弱角色</strong> 的数量。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>properties = [[5,5],[6,3],[3,6]]\n<strong>输出：</strong>0\n<strong>解释：</strong>不存在攻击和防御都严格高于其他角色的角色。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>properties = [[2,2],[3,3]]\n<strong>输出：</strong>1\n<strong>解释：</strong>第一个角色是弱角色，因为第二个角色的攻击和防御严格大于该角色。\n</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre>\n<strong>输入：</strong>properties = [[1,5],[10,4],[4,3]]\n<strong>输出：</strong>1\n<strong>解释：</strong>第三个角色是弱角色，因为第二个角色的攻击和防御严格大于该角色。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>2 &lt;= properties.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>properties[i].length == 2</code></li>\n\t<li><code>1 &lt;= attack<sub>i</sub>, defense<sub>i</sub> &lt;= 10<sup>5</sup></code></li>\n</ul>\n",
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            "hints": [
                "Sort the array on the basis of the attack values and group characters with the same attack together. How can you use these groups?",
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