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"categoryTitle": "Algorithms",
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"title": "Number of Ways to Split Array",
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"content": "<p>You are given a <strong>0-indexed</strong> integer array <code>nums</code> of length <code>n</code>.</p>\n\n<p><code>nums</code> contains a <strong>valid split</strong> at index <code>i</code> if the following are true:</p>\n\n<ul>\n\t<li>The sum of the first <code>i + 1</code> elements is <strong>greater than or equal to</strong> the sum of the last <code>n - i - 1</code> elements.</li>\n\t<li>There is <strong>at least one</strong> element to the right of <code>i</code>. That is, <code>0 &lt;= i &lt; n - 1</code>.</li>\n</ul>\n\n<p>Return <em>the number of <strong>valid splits</strong> in</em> <code>nums</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [10,4,-8,7]\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> \nThere are three ways of splitting nums into two non-empty parts:\n- Split nums at index 0. Then, the first part is [10], and its sum is 10. The second part is [4,-8,7], and its sum is 3. Since 10 &gt;= 3, i = 0 is a valid split.\n- Split nums at index 1. Then, the first part is [10,4], and its sum is 14. The second part is [-8,7], and its sum is -1. Since 14 &gt;= -1, i = 1 is a valid split.\n- Split nums at index 2. Then, the first part is [10,4,-8], and its sum is 6. The second part is [7], and its sum is 7. Since 6 &lt; 7, i = 2 is not a valid split.\nThus, the number of valid splits in nums is 2.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [2,3,1,0]\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> \nThere are two valid splits in nums:\n- Split nums at index 1. Then, the first part is [2,3], and its sum is 5. The second part is [1,0], and its sum is 1. Since 5 &gt;= 1, i = 1 is a valid split. \n- Split nums at index 2. Then, the first part is [2,3,1], and its sum is 6. The second part is [0], and its sum is 0. Since 6 &gt;= 0, i = 2 is a valid split.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>2 &lt;= nums.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>-10<sup>5</sup> &lt;= nums[i] &lt;= 10<sup>5</sup></code></li>\n</ul>\n",
"translatedTitle": "分割数组的方案数",
"translatedContent": "<p>给你一个下标从 <strong>0</strong>&nbsp;开始长度为 <code>n</code>&nbsp;的整数数组&nbsp;<code>nums</code>&nbsp;。<br />\n<span style=\"\">如果以下描述为真,那么</span><span style=\"\"> </span><code>nums</code>&nbsp;在下标 <code>i</code>&nbsp;处有一个 <strong>合法的分割</strong>&nbsp;</p>\n\n<ul>\n\t<li>前&nbsp;<code>i + 1</code>&nbsp;个元素的和 <strong>大于等于</strong>&nbsp;剩下的&nbsp;<code>n - i - 1</code>&nbsp;个元素的和。</li>\n\t<li>下标 <code>i</code>&nbsp;的右边 <strong>至少有一个</strong>&nbsp;元素,也就是说下标&nbsp;<code>i</code>&nbsp;满足&nbsp;<code>0 &lt;= i &lt; n - 1</code>&nbsp;。</li>\n</ul>\n\n<p>请你返回&nbsp;<code>nums</code>&nbsp;中的&nbsp;<strong>合法分割</strong>&nbsp;方案数。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1</strong></p>\n\n<pre>\n<b>输入:</b>nums = [10,4,-8,7]\n<b>输出:</b>2\n<b>解释:</b>\n总共有 3 种不同的方案可以将 nums 分割成两个非空的部分:\n- 在下标 0 处分割 nums 。那么第一部分为 [10] ,和为 10 。第二部分为 [4,-8,7] ,和为 3 。因为 10 &gt;= 3 ,所以 i = 0 是一个合法的分割。\n- 在下标 1 处分割 nums 。那么第一部分为 [10,4] ,和为 14 。第二部分为 [-8,7] ,和为 -1 。因为 14 &gt;= -1 ,所以 i = 1 是一个合法的分割。\n- 在下标 2 处分割 nums 。那么第一部分为 [10,4,-8] ,和为 6 。第二部分为 [7] ,和为 7 。因为 6 &lt; 7 ,所以 i = 2 不是一个合法的分割。\n所以 nums 中总共合法分割方案受为 2 。\n</pre>\n\n<p><strong>示例 2</strong></p>\n\n<pre>\n<b>输入:</b>nums = [2,3,1,0]\n<b>输出:</b>2\n<b>解释:</b>\n总共有 2 种 nums 的合法分割:\n- 在下标 1 处分割 nums 。那么第一部分为 [2,3] ,和为 5 。第二部分为 [1,0] ,和为 1 。因为 5 &gt;= 1 ,所以 i = 1 是一个合法的分割。\n- 在下标 2 处分割 nums 。那么第一部分为 [2,3,1] ,和为 6 。第二部分为 [0] ,和为 0 。因为 6 &gt;= 0 ,所以 i = 2 是一个合法的分割。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>2 &lt;= nums.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>-10<sup>5</sup> &lt;= nums[i] &lt;= 10<sup>5</sup></code></li>\n</ul>\n",
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