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https://gitee.com/coder-xiaomo/leetcode-problemset
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存量题库数据更新
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@@ -7,39 +7,39 @@
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"boundTopicId": 2293968,
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"title": "Timeout Cancellation",
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"titleSlug": "timeout-cancellation",
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"content": "<p>Given a function <code>fn</code>, an array of arguments <code>args</code>, and a timeout <code>t</code> in milliseconds, return a cancel function <code>cancelFn</code>.</p>\n\n<p>After a delay of <code>t</code>, <code>fn</code> should be called with <code>args</code> passed as parameters <strong>unless</strong> <code>cancelFn</code> was invoked before the delay of <code>t</code> milliseconds elapses, specifically at <code>cancelT</code> ms. In that case, <code>fn</code> should never be called.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> fn = (x) => x * 5, args = [2], t = 20, cancelT = 50\n<strong>Output:</strong> [{"time": 20, "returned": 10}]\n<strong>Explanation:</strong> \nconst cancel = cancellable((x) => x * 5, [2], 20); // fn(2) called at t=20ms\nsetTimeout(cancel, 50);\n\nThe cancellation was scheduled to occur after a delay of cancelT (50ms), which happened after the execution of fn(2) at 20ms.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> fn = (x) => x**2, args = [2], t = 100, cancelT = 50 \n<strong>Output:</strong> []\n<strong>Explanation:</strong> \nconst cancel = cancellable((x) => x**2, [2], 100); // fn(2) not called\nsetTimeout(cancel, 50);\n\nThe cancellation was scheduled to occur after a delay of cancelT (50ms), which happened before the execution of fn(2) at 100ms, resulting in fn(2) never being called.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> fn = (x1, x2) => x1 * x2, args = [2,4], t = 30, cancelT = 100\n<strong>Output:</strong> [{"time": 30, "returned": 8}]\n<strong>Explanation:</strong>\nconst cancel = cancellable((x1, x2) => x1 * x2, [2,4], 30); // fn(2,4) called at t=30ms\nsetTimeout(cancel, 100);\n\nThe cancellation was scheduled to occur after a delay of cancelT (100ms), which happened after the execution of fn(2,4) at 30ms.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>fn is a function</code></li>\n\t<li><code>args is a valid JSON array</code></li>\n\t<li><code>1 <= args.length <= 10</code></li>\n\t<li><code><font face=\"monospace\">20 <= t <= 1000</font></code></li>\n\t<li><code><font face=\"monospace\">10 <= cancelT <= 1000</font></code></li>\n</ul>\n",
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"content": "<p>Given a function <code>fn</code>, an array of arguments <code>args</code>, and a timeout <code>t</code> in milliseconds, return a cancel function <code>cancelFn</code>.</p>\n\n<p>After a delay of <code>cancelTimeMs</code>, the returned cancel function <code>cancelFn</code> will be invoked.</p>\n\n<pre>\nsetTimeout(cancelFn, cancelTimeMs)\n</pre>\n\n<p>Initially, the execution of the function <code>fn</code> should be delayed by <code>t</code> milliseconds.</p>\n\n<p>If, before the delay of <code>t</code> milliseconds, the function <code>cancelFn</code> is invoked, it should cancel the delayed execution of <code>fn</code>. Otherwise, if <code>cancelFn</code> is not invoked within the specified delay <code>t</code>, <code>fn</code> should be executed with the provided <code>args</code> as arguments.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> fn = (x) => x * 5, args = [2], t = 20\n<strong>Output:</strong> [{"time": 20, "returned": 10}]\n<strong>Explanation:</strong> \nconst cancelTimeMs = 50;\nconst result = [];\n\nconst fn = (x) => x * 5;\n\nconst start = performance.now();\n\nconst log = (...argsArr) => {\n const diff = Math.floor(performance.now() - start);\n result.push({"time": diff, "returned": fn(...argsArr)});\n}\n \nconst cancel = cancellable(log, [2], 20);\n\nconst maxT = Math.max(t, 50);\n \nsetTimeout(cancel, cancelTimeMs);\n\nsetTimeout(() => {\n console.log(result); // [{"time":20,"returned":10}]\n}, maxT + 15);\n\nThe cancellation was scheduled to occur after a delay of cancelTimeMs (50ms), which happened after the execution of fn(2) at 20ms.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> fn = (x) => x**2, args = [2], t = 100\n<strong>Output:</strong> []\n<strong>Explanation:</strong> \nconst cancelTimeMs = 50;\nThe cancellation was scheduled to occur after a delay of cancelTimeMs (50ms), which happened before the execution of fn(2) at 100ms, resulting in fn(2) never being called.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> fn = (x1, x2) => x1 * x2, args = [2,4], t = 30\n<strong>Output:</strong> [{"time": 30, "returned": 8}]\n<strong>Explanation: \n</strong>const cancelTimeMs = 100;\nThe cancellation was scheduled to occur after a delay of cancelTimeMs (100ms), which happened after the execution of fn(2,4) at 30ms.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>fn</code> is a function</li>\n\t<li><code>args</code> is a valid JSON array</li>\n\t<li><code>1 <= args.length <= 10</code></li>\n\t<li><code><font face=\"monospace\">20 <= t <= 1000</font></code></li>\n\t<li><code><font face=\"monospace\">10 <= cancelTimeMs <= 1000</font></code></li>\n</ul>\n",
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"translatedTitle": "执行可取消的延迟函数",
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"translatedContent": "<p>现给定一个函数 <code>fn</code> ，一个参数数组 <code>args</code> 和一个以毫秒为单位的超时时间 <code>t</code> ，返回一个取消函数 <code>cancelFn</code> 。</p>\n\n<p>在经过 <code>t</code> 毫秒的延迟后，应该调用 <code>fn</code> 函数，并将 <code>args</code> 作为参数传递。<strong>除非</strong> 在 <code>t</code> 毫秒的延迟过程中，在 <code>cancelT</code> 毫秒时调用了 <code>cancelFn</code>。并且在这种情况下，<code>fn</code> 函数不应该被调用。</p>\n\n<p><strong class=\"example\">示例 1:</strong></p>\n\n<pre>\n<b>输入：</b>fn = (x) => x * 5, args = [2], t = 20, cancelT = 50\n<b>输出：</b>[{\"time\": 20, \"returned\": 10}]\n<b>解释：</b>\nconst cancel = cancellable((x) => x * 5, [2], 20); // fn(2) 在 t=20ms 时被调用\nsetTimeout(cancel, 50);\n\n取消操作被安排在延迟了 cancelT（50毫秒）后进行，这发生在 fn(2) 在20毫秒时执行之后。</pre>\n\n<p><strong class=\"example\">示例 2：</strong></p>\n\n<pre>\n<b>输入：</b>fn = (x) => x**2, args = [2], t = 100, cancelT = 50\n<b>输出：</b>[]\n<b>解释：</b>\nconst cancel = cancellable((x) => x**2, [2], 100); // fn(2) 没被调用\nsetTimeout(cancel, 50);\n\n取消操作被安排在延迟了 cancelT（50毫秒）后进行，这发生在 fn(2) 在100毫秒时执行之前，导致 fn(2) 从未被调用。\n</pre>\n\n<p><strong class=\"example\">示例 3：</strong></p>\n\n<pre>\n<b>输入：</b>fn = (x1, x2) => x1 * x2, args = [2,4], t = 30, cancelTime = 100\n<b>输出：</b>[{\"time\": 30, \"returned\": 8}]\n<b>解释：</b>\nconst cancel = cancellable((x1, x2) => x1 * x2, [2,4], 30); // fn(2,4) 在 t=30ms 时被调用\nsetTimeout(cancel, 100);\n\n取消操作被安排在延迟了 cancelT（100毫秒）后进行，这发生在 fn(2,4) 在30毫秒时执行之后。\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>fn 是一个函数</code></li>\n\t<li><code>args 是一个有效的 JSON 数组</code></li>\n\t<li><code>1 <= args.length <= 10</code></li>\n\t<li><code><font face=\"monospace\">20 <= t <= 1000</font></code></li>\n\t<li><code><font face=\"monospace\">10 <= cancelT <= 1000</font></code></li>\n</ul>\n",
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"translatedContent": "<p>现给定一个函数 <code>fn</code> ，一个参数数组 <code>args</code> 和一个以毫秒为单位的超时时间 <code>t</code> ，返回一个取消函数 <code>cancelFn</code> 。</p>\n\n<p>在经过 <code>t</code> 毫秒的延迟后，应该调用 <code>fn</code> 函数，并将 <code>args</code> 作为参数传递。<strong>除非</strong> 在 <code>t</code> 毫秒的延迟过程中，在 <code>cancelT</code> 毫秒时调用了 <code>cancelFn</code>。并且在这种情况下，<code>fn</code> 函数不应该被调用。</p>\n\n<p><strong class=\"example\">示例 1:</strong></p>\n\n<pre>\n<b>输入：</b>fn = (x) => x * 5, args = [2], t = 20, cancelT = 50\n<b>输出：</b>[{\"time\": 20, \"returned\": 10}]\n<b>解释：</b>\nconst cancel = cancellable((x) => x * 5, [2], 20); // fn(2) 在 t=20ms 时被调用\nsetTimeout(cancel, 50);\n\n取消操作被安排在延迟了 cancelT（50毫秒）后进行，这发生在 fn(2) 在20毫秒时执行之后。</pre>\n\n<p><strong class=\"example\">示例 2：</strong></p>\n\n<pre>\n<b>输入：</b>fn = (x) => x**2, args = [2], t = 100, cancelT = 50\n<b>输出：</b>[]\n<b>解释：</b>\nconst cancel = cancellable((x) => x**2, [2], 100); // fn(2) 没被调用\nsetTimeout(cancel, 50);\n\n取消操作被安排在延迟了 cancelT（50毫秒）后进行，这发生在 fn(2) 在100毫秒时执行之前，导致 fn(2) 从未被调用。\n</pre>\n\n<p><strong class=\"example\">示例 3：</strong></p>\n\n<pre>\n<b>输入：</b>fn = (x1, x2) => x1 * x2, args = [2,4], t = 30, cancelTime = 100\n<b>输出：</b>[{\"time\": 30, \"returned\": 8}]\n<b>解释：</b>\nconst cancel = cancellable((x1, x2) => x1 * x2, [2,4], 30); // fn(2,4) 在 t=30ms 时被调用\nsetTimeout(cancel, 100);\n\n取消操作被安排在延迟了 cancelT（100毫秒）后进行，这发生在 fn(2,4) 在30毫秒时执行之后。\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>fn</code> 是一个函数</li>\n\t<li><code>args</code> 是一个有效的 JSON 数组</li>\n\t<li><code>1 <= args.length <= 10</code></li>\n\t<li><code><font face=\"monospace\">20 <= t <= 1000</font></code></li>\n\t<li><code><font face=\"monospace\">10 <= cancelT <= 1000</font></code></li>\n</ul>\n",
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"isPaidOnly": false,
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"difficulty": "Easy",
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"likes": 2,
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{
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"lang": "JavaScript",
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"langSlug": "javascript",
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"code": "/**\n * @param {Function} fn\n * @param {Array} args\n * @param {number} t\n * @return {Function}\n */\nvar cancellable = function(fn, args, t) {\n \n};\n\n/**\n * const result = []\n *\n * const fn = (x) => x * 5\n * const args = [2], t = 20, cancelT = 50\n *\n * const start = performance.now() \n *\n * const log = (...argsArr) => {\n * const diff = Math.floor(performance.now() - start);\n * result.push({\"time\": diff, \"returned\": fn(...argsArr)})\n * }\n * \n * const cancel = cancellable(log, args, t);\n *\n * const maxT = Math.max(t, cancelT)\n * \n * setTimeout(() => {\n * cancel()\n * }, cancelT)\n *\n * setTimeout(() => {\n * console.log(result) // [{\"time\":20,\"returned\":10}]\n * }, maxT + 15)\n */",
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"code": "/**\n * @param {Function} fn\n * @param {Array} args\n * @param {number} t\n * @return {Function}\n */\nvar cancellable = function(fn, args, t) {\n \n};\n\n/**\n * const result = [];\n *\n * const fn = (x) => x * 5;\n * const args = [2], t = 20, cancelTimeMs = 50;\n *\n * const start = performance.now();\n *\n * const log = (...argsArr) => {\n * const diff = Math.floor(performance.now() - start);\n * result.push({\"time\": diff, \"returned\": fn(...argsArr)});\n * }\n * \n * const cancel = cancellable(log, args, t);\n *\n * const maxT = Math.max(t, cancelTimeMs);\n * \n * setTimeout(cancel, cancelTimeMs);\n *\n * setTimeout(() => {\n * console.log(result); // [{\"time\":20,\"returned\":10}]\n * }, maxT + 15)\n */",
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"code": "function cancellable(fn: Function, args: any[], t: number): Function {\n\n};\n\n/**\n * const result = []\n *\n * const fn = (x) => x * 5\n * const args = [2], t = 20, cancelT = 50\n *\n * const start = performance.now() \n *\n * const log = (...argsArr) => {\n * const diff = Math.floor(performance.now() - start);\n * result.push({\"time\": diff, \"returned\": fn(...argsArr)})\n * }\n * \n * const cancel = cancellable(log, args, t);\n *\n * const maxT = Math.max(t, cancelT)\n * \n * setTimeout(() => {\n * cancel()\n * }, cancelT)\n *\n * setTimeout(() => {\n * console.log(result) // [{\"time\":20,\"returned\":10}]\n * }, maxT + 15)\n */",
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"code": "type JSONValue = null | boolean | number | string | JSONValue[] | { [key: string]: JSONValue };\ntype Fn = (...args: JSONValue[]) => void\n\nfunction cancellable(fn: Fn, args: JSONValue[], t: number): Function {\n\t\n};\n\n/**\n * const result = [];\n *\n * const fn = (x) => x * 5;\n * const args = [2], t = 20, cancelTimeMs = 50;\n *\n * const start = performance.now();\n *\n * const log = (...argsArr) => {\n * const diff = Math.floor(performance.now() - start);\n * result.push({\"time\": diff, \"returned\": fn(...argsArr)});\n * }\n * \n * const cancel = cancellable(log, args, t);\n *\n * const maxT = Math.max(t, cancelTimeMs);\n * \n * setTimeout(cancel, cancelTimeMs);\n *\n * setTimeout(() => {\n * console.log(result); // [{\"time\":20,\"returned\":10}]\n * }, maxT + 15)\n */",
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"sampleTestCase": "(x) => x * 5\n[2]\n20\n50",
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