mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-10 18:48:13 +08:00
157 lines
17 KiB
JSON
157 lines
17 KiB
JSON
{
|
|
"data": {
|
|
"question": {
|
|
"questionId": "1325",
|
|
"questionFrontendId": "1514",
|
|
"boundTopicId": null,
|
|
"title": "Path with Maximum Probability",
|
|
"titleSlug": "path-with-maximum-probability",
|
|
"content": "<p>You are given an undirected weighted graph of <code>n</code> nodes (0-indexed), represented by an edge list where <code>edges[i] = [a, b]</code> is an undirected edge connecting the nodes <code>a</code> and <code>b</code> with a probability of success of traversing that edge <code>succProb[i]</code>.</p>\r\n\r\n<p>Given two nodes <code>start</code> and <code>end</code>, find the path with the maximum probability of success to go from <code>start</code> to <code>end</code> and return its success probability.</p>\r\n\r\n<p>If there is no path from <code>start</code> to <code>end</code>, <strong>return 0</strong>. Your answer will be accepted if it differs from the correct answer by at most <strong>1e-5</strong>.</p>\r\n\r\n<p> </p>\r\n<p><strong>Example 1:</strong></p>\r\n\r\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/09/20/1558_ex1.png\" style=\"width: 187px; height: 186px;\" /></strong></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> n = 3, edges = [[0,1],[1,2],[0,2]], succProb = [0.5,0.5,0.2], start = 0, end = 2\r\n<strong>Output:</strong> 0.25000\r\n<strong>Explanation:</strong> There are two paths from start to end, one having a probability of success = 0.2 and the other has 0.5 * 0.5 = 0.25.\r\n</pre>\r\n\r\n<p><strong>Example 2:</strong></p>\r\n\r\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/09/20/1558_ex2.png\" style=\"width: 189px; height: 186px;\" /></strong></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> n = 3, edges = [[0,1],[1,2],[0,2]], succProb = [0.5,0.5,0.3], start = 0, end = 2\r\n<strong>Output:</strong> 0.30000\r\n</pre>\r\n\r\n<p><strong>Example 3:</strong></p>\r\n\r\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/09/20/1558_ex3.png\" style=\"width: 215px; height: 191px;\" /></strong></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> n = 3, edges = [[0,1]], succProb = [0.5], start = 0, end = 2\r\n<strong>Output:</strong> 0.00000\r\n<strong>Explanation:</strong> There is no path between 0 and 2.\r\n</pre>\r\n\r\n<p> </p>\r\n<p><strong>Constraints:</strong></p>\r\n\r\n<ul>\r\n\t<li><code>2 <= n <= 10^4</code></li>\r\n\t<li><code>0 <= start, end < n</code></li>\r\n\t<li><code>start != end</code></li>\r\n\t<li><code>0 <= a, b < n</code></li>\r\n\t<li><code>a != b</code></li>\r\n\t<li><code>0 <= succProb.length == edges.length <= 2*10^4</code></li>\r\n\t<li><code>0 <= succProb[i] <= 1</code></li>\r\n\t<li>There is at most one edge between every two nodes.</li>\r\n</ul>",
|
|
"translatedTitle": null,
|
|
"translatedContent": null,
|
|
"isPaidOnly": false,
|
|
"difficulty": "Medium",
|
|
"likes": 1152,
|
|
"dislikes": 25,
|
|
"isLiked": null,
|
|
"similarQuestions": "[{\"title\": \"Number of Ways to Arrive at Destination\", \"titleSlug\": \"number-of-ways-to-arrive-at-destination\", \"difficulty\": \"Medium\", \"translatedTitle\": null}]",
|
|
"exampleTestcases": "3\n[[0,1],[1,2],[0,2]]\n[0.5,0.5,0.2]\n0\n2\n3\n[[0,1],[1,2],[0,2]]\n[0.5,0.5,0.3]\n0\n2\n3\n[[0,1]]\n[0.5]\n0\n2",
|
|
"categoryTitle": "Algorithms",
|
|
"contributors": [],
|
|
"topicTags": [
|
|
{
|
|
"name": "Graph",
|
|
"slug": "graph",
|
|
"translatedName": null,
|
|
"__typename": "TopicTagNode"
|
|
},
|
|
{
|
|
"name": "Heap (Priority Queue)",
|
|
"slug": "heap-priority-queue",
|
|
"translatedName": null,
|
|
"__typename": "TopicTagNode"
|
|
},
|
|
{
|
|
"name": "Shortest Path",
|
|
"slug": "shortest-path",
|
|
"translatedName": null,
|
|
"__typename": "TopicTagNode"
|
|
}
|
|
],
|
|
"companyTagStats": null,
|
|
"codeSnippets": [
|
|
{
|
|
"lang": "C++",
|
|
"langSlug": "cpp",
|
|
"code": "class Solution {\npublic:\n double maxProbability(int n, vector<vector<int>>& edges, vector<double>& succProb, int start, int end) {\n \n }\n};",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "Java",
|
|
"langSlug": "java",
|
|
"code": "class Solution {\n public double maxProbability(int n, int[][] edges, double[] succProb, int start, int end) {\n \n }\n}",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "Python",
|
|
"langSlug": "python",
|
|
"code": "class Solution(object):\n def maxProbability(self, n, edges, succProb, start, end):\n \"\"\"\n :type n: int\n :type edges: List[List[int]]\n :type succProb: List[float]\n :type start: int\n :type end: int\n :rtype: float\n \"\"\"\n ",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "Python3",
|
|
"langSlug": "python3",
|
|
"code": "class Solution:\n def maxProbability(self, n: int, edges: List[List[int]], succProb: List[float], start: int, end: int) -> float:\n ",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "C",
|
|
"langSlug": "c",
|
|
"code": "\n\ndouble maxProbability(int n, int** edges, int edgesSize, int* edgesColSize, double* succProb, int succProbSize, int start, int end){\n\n}",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "C#",
|
|
"langSlug": "csharp",
|
|
"code": "public class Solution {\n public double MaxProbability(int n, int[][] edges, double[] succProb, int start, int end) {\n \n }\n}",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "JavaScript",
|
|
"langSlug": "javascript",
|
|
"code": "/**\n * @param {number} n\n * @param {number[][]} edges\n * @param {number[]} succProb\n * @param {number} start\n * @param {number} end\n * @return {number}\n */\nvar maxProbability = function(n, edges, succProb, start, end) {\n \n};",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "Ruby",
|
|
"langSlug": "ruby",
|
|
"code": "# @param {Integer} n\n# @param {Integer[][]} edges\n# @param {Float[]} succ_prob\n# @param {Integer} start\n# @param {Integer} end\n# @return {Float}\ndef max_probability(n, edges, succ_prob, start, end)\n \nend",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "Swift",
|
|
"langSlug": "swift",
|
|
"code": "class Solution {\n func maxProbability(_ n: Int, _ edges: [[Int]], _ succProb: [Double], _ start: Int, _ end: Int) -> Double {\n \n }\n}",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "Go",
|
|
"langSlug": "golang",
|
|
"code": "func maxProbability(n int, edges [][]int, succProb []float64, start int, end int) float64 {\n \n}",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "Scala",
|
|
"langSlug": "scala",
|
|
"code": "object Solution {\n def maxProbability(n: Int, edges: Array[Array[Int]], succProb: Array[Double], start: Int, end: Int): Double = {\n \n }\n}",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "Kotlin",
|
|
"langSlug": "kotlin",
|
|
"code": "class Solution {\n fun maxProbability(n: Int, edges: Array<IntArray>, succProb: DoubleArray, start: Int, end: Int): Double {\n \n }\n}",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "Rust",
|
|
"langSlug": "rust",
|
|
"code": "impl Solution {\n pub fn max_probability(n: i32, edges: Vec<Vec<i32>>, succ_prob: Vec<f64>, start: i32, end: i32) -> f64 {\n \n }\n}",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "PHP",
|
|
"langSlug": "php",
|
|
"code": "class Solution {\n\n /**\n * @param Integer $n\n * @param Integer[][] $edges\n * @param Float[] $succProb\n * @param Integer $start\n * @param Integer $end\n * @return Float\n */\n function maxProbability($n, $edges, $succProb, $start, $end) {\n \n }\n}",
|
|
"__typename": "CodeSnippetNode"
|
|
},
|
|
{
|
|
"lang": "TypeScript",
|
|
"langSlug": "typescript",
|
|
"code": "function maxProbability(n: number, edges: number[][], succProb: number[], start: number, end: number): number {\n\n};",
|
|
"__typename": "CodeSnippetNode"
|
|
}
|
|
],
|
|
"stats": "{\"totalAccepted\": \"42.2K\", \"totalSubmission\": \"90.9K\", \"totalAcceptedRaw\": 42212, \"totalSubmissionRaw\": 90921, \"acRate\": \"46.4%\"}",
|
|
"hints": [
|
|
"Multiplying probabilities will result in precision errors.",
|
|
"Take log probabilities to sum up numbers instead of multiplying them.",
|
|
"Use Dijkstra's algorithm to find the minimum path between the two nodes after negating all costs."
|
|
],
|
|
"solution": null,
|
|
"status": null,
|
|
"sampleTestCase": "3\n[[0,1],[1,2],[0,2]]\n[0.5,0.5,0.2]\n0\n2",
|
|
"metaData": "{\n \"name\": \"maxProbability\",\n \"params\": [\n {\n \"name\": \"n\",\n \"type\": \"integer\"\n },\n {\n \"type\": \"integer[][]\",\n \"name\": \"edges\"\n },\n {\n \"type\": \"double[]\",\n \"name\": \"succProb\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"start\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"end\"\n }\n ],\n \"return\": {\n \"type\": \"double\"\n }\n}",
|
|
"judgerAvailable": true,
|
|
"judgeType": "large",
|
|
"mysqlSchemas": [],
|
|
"enableRunCode": true,
|
|
"enableTestMode": false,
|
|
"enableDebugger": true,
|
|
"envInfo": "{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 17 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\"], \"java\": [\"Java\", \"<p><code> OpenJDK 17 </code>. Java 8 features such as lambda expressions and stream API can be used. </p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n<p>Includes <code>Pair</code> class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.</p>\"], \"python\": [\"Python\", \"<p><code>Python 2.7.12</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\\\"https://docs.python.org/2/library/array.html\\\" target=\\\"_blank\\\">array</a>, <a href=\\\"https://docs.python.org/2/library/bisect.html\\\" target=\\\"_blank\\\">bisect</a>, <a href=\\\"https://docs.python.org/2/library/collections.html\\\" target=\\\"_blank\\\">collections</a>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\\r\\n\\r\\n<p>Note that Python 2.7 <a href=\\\"https://www.python.org/dev/peps/pep-0373/\\\" target=\\\"_blank\\\">will not be maintained past 2020</a>. For the latest Python, please choose Python3 instead.</p>\"], \"c\": [\"C\", \"<p>Compiled with <code>gcc 8.2</code> using the gnu99 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level one optimization (<code>-O1</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n\\r\\n<p>For hash table operations, you may use <a href=\\\"https://troydhanson.github.io/uthash/\\\" target=\\\"_blank\\\">uthash</a>. \\\"uthash.h\\\" is included by default. Below are some examples:</p>\\r\\n\\r\\n<p><b>1. Adding an item to a hash.</b>\\r\\n<pre>\\r\\nstruct hash_entry {\\r\\n int id; /* we'll use this field as the key */\\r\\n char name[10];\\r\\n UT_hash_handle hh; /* makes this structure hashable */\\r\\n};\\r\\n\\r\\nstruct hash_entry *users = NULL;\\r\\n\\r\\nvoid add_user(struct hash_entry *s) {\\r\\n HASH_ADD_INT(users, id, s);\\r\\n}\\r\\n</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>2. Looking up an item in a hash:</b>\\r\\n<pre>\\r\\nstruct hash_entry *find_user(int user_id) {\\r\\n struct hash_entry *s;\\r\\n HASH_FIND_INT(users, &user_id, s);\\r\\n return s;\\r\\n}\\r\\n</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>3. Deleting an item in a hash:</b>\\r\\n<pre>\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n HASH_DEL(users, user); \\r\\n}\\r\\n</pre>\\r\\n</p>\"], \"csharp\": [\"C#\", \"<p><a href=\\\"https://docs.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-9\\\" target=\\\"_blank\\\">C# 10 with .NET 6 runtime</a></p>\\r\\n\\r\\n<p>Your code is compiled with debug flag enabled (<code>/debug</code>).</p>\"], \"javascript\": [\"JavaScript\", \"<p><code>Node.js 16.13.2</code>.</p>\\r\\n\\r\\n<p>Your code is run with <code>--harmony</code> flag, enabling <a href=\\\"http://node.green/\\\" target=\\\"_blank\\\">new ES6 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\\r\\n\\r\\n<p>For Priority Queue / Queue data structures, you may use <a href=\\\"https://github.com/datastructures-js/priority-queue\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and <a href=\\\"https://github.com/datastructures-js/queue\\\" target=\\\"_blank\\\">datastructures-js/queue</a>.</p>\"], \"ruby\": [\"Ruby\", \"<p><code>Ruby 3.1</code></p>\\r\\n\\r\\n<p>Some common data structure implementations are provided in the Algorithms module: https://www.rubydoc.info/github/kanwei/algorithms/Algorithms</p>\"], \"swift\": [\"Swift\", \"<p><code>Swift 5.5.2</code>.</p>\"], \"golang\": [\"Go\", \"<p><code>Go 1.17.6</code>.</p>\\r\\n\\r\\n<p>Support <a href=\\\"https://godoc.org/github.com/emirpasic/gods\\\" target=\\\"_blank\\\">https://godoc.org/github.com/emirpasic/gods</a> library.</p>\"], \"python3\": [\"Python3\", \"<p><code>Python 3.10</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\\\"https://docs.python.org/3/library/array.html\\\" target=\\\"_blank\\\">array</a>, <a href=\\\"https://docs.python.org/3/library/bisect.html\\\" target=\\\"_blank\\\">bisect</a>, <a href=\\\"https://docs.python.org/3/library/collections.html\\\" target=\\\"_blank\\\">collections</a>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\"], \"scala\": [\"Scala\", \"<p><code>Scala 2.13.7</code>.</p>\"], \"kotlin\": [\"Kotlin\", \"<p><code>Kotlin 1.3.10</code>.</p>\"], \"rust\": [\"Rust\", \"<p><code>Rust 1.58.1</code></p>\\r\\n\\r\\n<p>Supports <a href=\\\"https://crates.io/crates/rand\\\" target=\\\"_blank\\\">rand </a> v0.6\\u00a0from crates.io</p>\"], \"php\": [\"PHP\", \"<p><code>PHP 8.1</code>.</p>\\r\\n<p>With bcmath module</p>\"], \"typescript\": [\"Typescript\", \"<p><code>TypeScript 4.5.4, Node.js 16.13.2</code>.</p>\\r\\n\\r\\n<p>Your code is run with <code>--harmony</code> flag, enabling <a href=\\\"http://node.green/\\\" target=\\\"_blank\\\">new ES2020 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\"]}",
|
|
"libraryUrl": null,
|
|
"adminUrl": null,
|
|
"challengeQuestion": null,
|
|
"__typename": "QuestionNode"
|
|
}
|
|
}
|
|
} |