mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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161 lines
16 KiB
JSON
161 lines
16 KiB
JSON
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"questionId": "2714",
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"questionFrontendId": "2574",
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"title": "Left and Right Sum Differences",
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"titleSlug": "left-and-right-sum-differences",
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"content": "<p>Given a <strong>0-indexed</strong> integer array <code>nums</code>, find a <strong>0-indexed </strong>integer array <code>answer</code> where:</p>\n\n<ul>\n <li><code>answer.length == nums.length</code>.</li>\n <li><code>answer[i] = |leftSum[i] - rightSum[i]|</code>.</li>\n</ul>\n\n<p>Where:</p>\n\n<ul>\n <li><code>leftSum[i]</code> is the sum of elements to the left of the index <code>i</code> in the array <code>nums</code>. If there is no such element, <code>leftSum[i] = 0</code>.</li>\n <li><code>rightSum[i]</code> is the sum of elements to the right of the index <code>i</code> in the array <code>nums</code>. If there is no such element, <code>rightSum[i] = 0</code>.</li>\n</ul>\n\n<p>Return <em>the array</em> <code>answer</code>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [10,4,8,3]\n<strong>Output:</strong> [15,1,11,22]\n<strong>Explanation:</strong> The array leftSum is [0,10,14,22] and the array rightSum is [15,11,3,0].\nThe array answer is [|0 - 15|,|10 - 11|,|14 - 3|,|22 - 0|] = [15,1,11,22].\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1]\n<strong>Output:</strong> [0]\n<strong>Explanation:</strong> The array leftSum is [0] and the array rightSum is [0].\nThe array answer is [|0 - 0|] = [0].\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= nums.length <= 1000</code></li>\n\t<li><code>1 <= nums[i] <= 10<sup>5</sup></code></li>\n</ul>\n",
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"difficulty": "Easy",
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"exampleTestcases": "[10,4,8,3]\n[1]",
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"categoryTitle": "Algorithms",
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"code": "class Solution {\npublic:\n vector<int> leftRigthDifference(vector<int>& nums) {\n \n }\n};",
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"code": "class Solution {\n public int[] leftRigthDifference(int[] nums) {\n \n }\n}",
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"lang": "Python",
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"code": "class Solution(object):\n def leftRigthDifference(self, nums):\n \"\"\"\n :type nums: List[int]\n :rtype: List[int]\n \"\"\"\n ",
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"code": "/**\n * Note: The returned array must be malloced, assume caller calls free().\n */\nint* leftRigthDifference(int* nums, int numsSize, int* returnSize){\n\n}",
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"code": "# @param {Integer[]} nums\n# @return {Integer[]}\ndef left_rigth_difference(nums)\n \nend",
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"code": "impl Solution {\n pub fn left_rigth_difference(nums: Vec<i32>) -> Vec<i32> {\n \n }\n}",
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"code": "function leftRigthDifference(nums: number[]): number[] {\n\n};",
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"code": "(define/contract (left-rigth-difference nums)\n (-> (listof exact-integer?) (listof exact-integer?))\n\n )",
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"lang": "Erlang",
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"code": "-spec left_rigth_difference(Nums :: [integer()]) -> [integer()].\nleft_rigth_difference(Nums) ->\n .",
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"lang": "Elixir",
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"langSlug": "elixir",
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"code": "defmodule Solution do\n @spec left_rigth_difference(nums :: [integer]) :: [integer]\n def left_rigth_difference(nums) do\n\n end\nend",
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"langSlug": "dart",
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"code": "class Solution {\n List<int> leftRigthDifference(List<int> nums) {\n\n }\n}",
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}
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"hints": [
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"For each index i, maintain two variables leftSum and rightSum.",
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"Iterate on the range j: [0 … i - 1] and add nums[j] to the leftSum and similarly iterate on the range j: [i + 1 … nums.length - 1] and add nums[j] to the rightSum."
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],
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"sampleTestCase": "[10,4,8,3]",
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