mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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188 lines
16 KiB
JSON
188 lines
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"title": "Find the Highest Altitude",
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"content": "<p>There is a biker going on a road trip. The road trip consists of <code>n + 1</code> points at different altitudes. The biker starts his trip on point <code>0</code> with altitude equal <code>0</code>.</p>\n\n<p>You are given an integer array <code>gain</code> of length <code>n</code> where <code>gain[i]</code> is the <strong>net gain in altitude</strong> between points <code>i</code> and <code>i + 1</code> for all (<code>0 <= i < n)</code>. Return <em>the <strong>highest altitude</strong> of a point.</em></p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> gain = [-5,1,5,0,-7]\n<strong>Output:</strong> 1\n<strong>Explanation:</strong> The altitudes are [0,-5,-4,1,1,-6]. The highest is 1.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> gain = [-4,-3,-2,-1,4,3,2]\n<strong>Output:</strong> 0\n<strong>Explanation:</strong> The altitudes are [0,-4,-7,-9,-10,-6,-3,-1]. The highest is 0.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>n == gain.length</code></li>\n\t<li><code>1 <= n <= 100</code></li>\n\t<li><code>-100 <= gain[i] <= 100</code></li>\n</ul>\n",
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"Let's note that the altitude of an element is the sum of gains of all the elements behind it",
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"Getting the altitudes can be done by getting the prefix sum array of the given array"
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