mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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180 lines
18 KiB
JSON
180 lines
18 KiB
JSON
{
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"data": {
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"question": {
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"questionId": "1757",
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"questionFrontendId": "1654",
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"boundTopicId": null,
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"title": "Minimum Jumps to Reach Home",
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"titleSlug": "minimum-jumps-to-reach-home",
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"content": "<p>A certain bug's home is on the x-axis at position <code>x</code>. Help them get there from position <code>0</code>.</p>\n\n<p>The bug jumps according to the following rules:</p>\n\n<ul>\n\t<li>It can jump exactly <code>a</code> positions <strong>forward</strong> (to the right).</li>\n\t<li>It can jump exactly <code>b</code> positions <strong>backward</strong> (to the left).</li>\n\t<li>It cannot jump backward twice in a row.</li>\n\t<li>It cannot jump to any <code>forbidden</code> positions.</li>\n</ul>\n\n<p>The bug may jump forward <strong>beyond</strong> its home, but it <strong>cannot jump</strong> to positions numbered with <strong>negative</strong> integers.</p>\n\n<p>Given an array of integers <code>forbidden</code>, where <code>forbidden[i]</code> means that the bug cannot jump to the position <code>forbidden[i]</code>, and integers <code>a</code>, <code>b</code>, and <code>x</code>, return <em>the minimum number of jumps needed for the bug to reach its home</em>. If there is no possible sequence of jumps that lands the bug on position <code>x</code>, return <code>-1.</code></p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> forbidden = [14,4,18,1,15], a = 3, b = 15, x = 9\n<strong>Output:</strong> 3\n<strong>Explanation:</strong> 3 jumps forward (0 -> 3 -> 6 -> 9) will get the bug home.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> forbidden = [8,3,16,6,12,20], a = 15, b = 13, x = 11\n<strong>Output:</strong> -1\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> forbidden = [1,6,2,14,5,17,4], a = 16, b = 9, x = 7\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> One jump forward (0 -> 16) then one jump backward (16 -> 7) will get the bug home.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= forbidden.length <= 1000</code></li>\n\t<li><code>1 <= a, b, forbidden[i] <= 2000</code></li>\n\t<li><code>0 <= x <= 2000</code></li>\n\t<li>All the elements in <code>forbidden</code> are distinct.</li>\n\t<li>Position <code>x</code> is not forbidden.</li>\n</ul>\n",
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"translatedTitle": null,
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"translatedContent": null,
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"isPaidOnly": false,
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"difficulty": "Medium",
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"likes": 1428,
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"dislikes": 259,
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"isLiked": null,
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"similarQuestions": "[{\"title\": \"Reachable Nodes With Restrictions\", \"titleSlug\": \"reachable-nodes-with-restrictions\", \"difficulty\": \"Medium\", \"translatedTitle\": null}, {\"title\": \"Maximum Number of Jumps to Reach the Last Index\", \"titleSlug\": \"maximum-number-of-jumps-to-reach-the-last-index\", \"difficulty\": \"Medium\", \"translatedTitle\": null}]",
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"exampleTestcases": "[14,4,18,1,15]\n3\n15\n9\n[8,3,16,6,12,20]\n15\n13\n11\n[1,6,2,14,5,17,4]\n16\n9\n7",
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"categoryTitle": "Algorithms",
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"contributors": [],
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"topicTags": [
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{
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"name": "Array",
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"slug": "array",
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"name": "Dynamic Programming",
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"__typename": "TopicTagNode"
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},
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{
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"name": "Breadth-First Search",
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"codeSnippets": [
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"lang": "C++",
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"langSlug": "cpp",
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"code": "class Solution {\npublic:\n int minimumJumps(vector<int>& forbidden, int a, int b, int x) {\n \n }\n};",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Java",
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"langSlug": "java",
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"code": "class Solution {\n public int minimumJumps(int[] forbidden, int a, int b, int x) {\n \n }\n}",
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},
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{
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"lang": "Python",
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"langSlug": "python",
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"code": "class Solution(object):\n def minimumJumps(self, forbidden, a, b, x):\n \"\"\"\n :type forbidden: List[int]\n :type a: int\n :type b: int\n :type x: int\n :rtype: int\n \"\"\"\n ",
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"code": "class Solution:\n def minimumJumps(self, forbidden: List[int], a: int, b: int, x: int) -> int:\n ",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "C",
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"langSlug": "c",
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"code": "int minimumJumps(int* forbidden, int forbiddenSize, int a, int b, int x) {\n \n}",
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{
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"lang": "C#",
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"langSlug": "csharp",
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"code": "public class Solution {\n public int MinimumJumps(int[] forbidden, int a, int b, int x) {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "JavaScript",
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"langSlug": "javascript",
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"code": "/**\n * @param {number[]} forbidden\n * @param {number} a\n * @param {number} b\n * @param {number} x\n * @return {number}\n */\nvar minimumJumps = function(forbidden, a, b, x) {\n \n};",
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{
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"lang": "TypeScript",
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"langSlug": "typescript",
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"code": "function minimumJumps(forbidden: number[], a: number, b: number, x: number): number {\n \n};",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "PHP",
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"langSlug": "php",
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"code": "class Solution {\n\n /**\n * @param Integer[] $forbidden\n * @param Integer $a\n * @param Integer $b\n * @param Integer $x\n * @return Integer\n */\n function minimumJumps($forbidden, $a, $b, $x) {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Swift",
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"langSlug": "swift",
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"code": "class Solution {\n func minimumJumps(_ forbidden: [Int], _ a: Int, _ b: Int, _ x: Int) -> Int {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "class Solution {\n fun minimumJumps(forbidden: IntArray, a: Int, b: Int, x: Int): Int {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Dart",
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"langSlug": "dart",
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"code": "class Solution {\n int minimumJumps(List<int> forbidden, int a, int b, int x) {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Go",
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"langSlug": "golang",
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"code": "func minimumJumps(forbidden []int, a int, b int, x int) int {\n \n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Ruby",
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"langSlug": "ruby",
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"code": "# @param {Integer[]} forbidden\n# @param {Integer} a\n# @param {Integer} b\n# @param {Integer} x\n# @return {Integer}\ndef minimum_jumps(forbidden, a, b, x)\n \nend",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Scala",
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"langSlug": "scala",
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"code": "object Solution {\n def minimumJumps(forbidden: Array[Int], a: Int, b: Int, x: Int): Int = {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Rust",
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"langSlug": "rust",
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"code": "impl Solution {\n pub fn minimum_jumps(forbidden: Vec<i32>, a: i32, b: i32, x: i32) -> i32 {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Racket",
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"langSlug": "racket",
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"code": "(define/contract (minimum-jumps forbidden a b x)\n (-> (listof exact-integer?) exact-integer? exact-integer? exact-integer? exact-integer?)\n )",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec minimum_jumps(Forbidden :: [integer()], A :: integer(), B :: integer(), X :: integer()) -> integer().\nminimum_jumps(Forbidden, A, B, X) ->\n .",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Elixir",
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"langSlug": "elixir",
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"code": "defmodule Solution do\n @spec minimum_jumps(forbidden :: [integer], a :: integer, b :: integer, x :: integer) :: integer\n def minimum_jumps(forbidden, a, b, x) do\n \n end\nend",
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"__typename": "CodeSnippetNode"
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}
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],
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"stats": "{\"totalAccepted\": \"40.2K\", \"totalSubmission\": \"137.1K\", \"totalAcceptedRaw\": 40223, \"totalSubmissionRaw\": 137092, \"acRate\": \"29.3%\"}",
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"hints": [
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"Think of the line as a graph",
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"to handle the no double back jumps condition you can handle it by holding the state of your previous jump"
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "[14,4,18,1,15]\n3\n15\n9",
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"metaData": "{\n \"name\": \"minimumJumps\",\n \"params\": [\n {\n \"name\": \"forbidden\",\n \"type\": \"integer[]\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"a\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"b\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"x\"\n }\n ],\n \"return\": {\n \"type\": \"integer\"\n }\n}",
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"judgerAvailable": true,
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"judgeType": "large",
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"envInfo": "{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 20 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 gnu11 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. 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