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68 lines
5.5 KiB
JSON
68 lines
5.5 KiB
JSON
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"questionId": "2775",
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"questionFrontendId": "2648",
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"title": "Generate Fibonacci Sequence",
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"titleSlug": "generate-fibonacci-sequence",
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"content": "<p>Write a generator function that returns a generator object which yields the <strong>fibonacci sequence</strong>.</p>\n\n<p>The <strong>fibonacci sequence</strong> is defined by the relation <code>X<sub>n</sub> = X<sub>n-1</sub> + X<sub>n-2</sub></code>.</p>\n\n<p>The first few numbers of the series are <code>0, 1, 1, 2, 3, 5, 8, 13</code>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> callCount = 5\n<strong>Output:</strong> [0,1,1,2,3]\n<strong>Explanation:</strong>\nconst gen = fibGenerator();\ngen.next().value; // 0\ngen.next().value; // 1\ngen.next().value; // 1\ngen.next().value; // 2\ngen.next().value; // 3\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> callCount = 0\n<strong>Output:</strong> []\n<strong>Explanation:</strong> gen.next() is never called so nothing is outputted\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>0 <= callCount <= 50</code></li>\n</ul>\n",
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"difficulty": "Easy",
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"exampleTestcases": "5\n0",
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"categoryTitle": "JavaScript",
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{
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"lang": "JavaScript",
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"langSlug": "javascript",
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"code": "/**\n * @return {Generator<number>}\n */\nvar fibGenerator = function*() {\n \n};\n\n/**\n * const gen = fibGenerator();\n * gen.next().value; // 0\n * gen.next().value; // 1\n */",
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"lang": "TypeScript",
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"langSlug": "typescript",
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"code": "function* fibGenerator(): Generator<number, any, number> {\n\t\n};\n\n/**\n * const gen = fibGenerator();\n * gen.next().value; // 0\n * gen.next().value; // 1\n */",
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"hints": [
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"Javascript has the concept of generators. They are critical to this problem.",
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"First yield 0 and 1.",
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"Create an infinite \"while(true)\" loop.",
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"In that loop, continuously yield the next value which is the sum of the previous two."
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],
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"sampleTestCase": "5",
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"envInfo": "{\"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 5.3.0 version of <a href=\\\"https://github.com/datastructures-js/priority-queue/tree/fb4fdb984834421279aeb081df7af624d17c2a03\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and 4.2.1 version of <a href=\\\"https://github.com/datastructures-js/queue/tree/e63563025a5a805aa16928cb53bcd517bfea9230\\\" target=\\\"_blank\\\">datastructures-js/queue</a>.</p>\"], \"typescript\": [\"Typescript\", \"<p><code>TypeScript 5.1.6, 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 ES2022 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\"]}",
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