leetcode-problemset/leetcode/originData/curry.json

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            "questionId": "2740",
            "questionFrontendId": "2632",
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            "title": "Curry",
            "titleSlug": "curry",
            "content": "<p>Given a function&nbsp;<code>fn</code>,&nbsp;return&nbsp;a&nbsp;<strong>curried</strong>&nbsp;version of that function.</p>\n\n<p>A&nbsp;<strong>curried</strong>&nbsp;function is a function that accepts fewer or an equal number of&nbsp;parameters as the original function and returns either another&nbsp;<strong>curried</strong>&nbsp;function or the same value the original function would have returned.</p>\n\n<p>In practical terms, if you called the original function like&nbsp;<code>sum(1,2,3)</code>, you would call the&nbsp;<strong>curried</strong>&nbsp;version like <code>csum(1)(2)(3)<font face=\"sans-serif, Arial, Verdana, Trebuchet MS\">,&nbsp;</font></code><code>csum(1)(2,3)</code>,&nbsp;<code>csum(1,2)(3)</code>, or&nbsp;<code>csum(1,2,3)</code>. All these methods of calling the <strong>curried</strong> function&nbsp;should return the same value as the original.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nfn = function sum(a, b, c) { return a + b + c; }\ninputs = [[1],[2],[3]]\n<strong>Output:</strong> 6\n<strong>Explanation:</strong>\nThe code being executed is:\nconst curriedSum = curry(fn);\ncurriedSum(1)(2)(3) === 6;\ncurriedSum(1)(2)(3) should return the same value as sum(1, 2, 3).\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong>\nfn = function sum(a, b, c) { return a + b + c; }\ninputs = [[1,2],[3]]]\n<strong>Output:</strong> 6\n<strong>Explanation:</strong>\ncurriedSum(1, 2)(3) should return the same value as sum(1, 2, 3).</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong>\nfn = function sum(a, b, c) { return a + b + c; }\ninputs = [[],[],[1,2,3]]\n<strong>Output:</strong> 6\n<strong>Explanation:</strong>\nYou should be able to pass the parameters in any way, including all at once or none at all.\ncurriedSum()()(1, 2, 3) should return the same value as sum(1, 2, 3).\n</pre>\n\n<p><strong class=\"example\">Example 4:</strong></p>\n\n<pre>\n<strong>Input:</strong>\nfn = function life() { return 42; }\ninputs = [[]]\n<strong>Output:</strong> 42\n<strong>Explanation:</strong>\ncurrying a function that accepts zero parameters should effectively do nothing.\ncurriedLife() === 42\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= inputs.length &lt;= 1000</code></li>\n\t<li><code>0 &lt;= inputs[i][j] &lt;= 10<sup>5</sup></code></li>\n\t<li><code>0 &lt;= fn.length &lt;= 1000</code></li>\n\t<li><code>inputs.flat().length == fn.length</code></li>\n\t<li><code>function parameters explicitly defined</code></li>\n</ul>\n",
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            "difficulty": "Medium",
            "likes": 15,
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            "exampleTestcases": "function sum(a, b, c) { return a + b + c; }\n[[1],[2],[3]]\nfunction sum(a, b, c) { return a + b + c; }\n[[1,2],[3]]\nfunction sum(a, b, c) { return a + b + c; }\n[[],[],[1,2,3]]\nfunction life() { return 42; }\n[[]]",
            "categoryTitle": "JavaScript",
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            "codeSnippets": [
                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "/**\n * @param {Function} fn\n * @return {Function}\n */\nvar curry = function(fn) {\n    return function curried() {\n\n    };\n};\n\n/**\n * function sum(a, b) { return a + b; }\n * const csum = curry(sum);\n * csum(1)(2) // 3\n */\n",
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                {
                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "function curry(fn: Function): Function {\n    return function curried() {\n\n    };\n};\n\n/**\n * function sum(a, b) { return a + b; }\n * const csum = curry(sum);\n * csum(1)(2) // 3\n */\n",
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            "hints": [
                "You can access the count of parameters expected to passed into a function with \"fn.length\".",
                "You can use recursion. If the length of params passed is equal to fn.length, you are done. Just pass those params to fn. Otherwise return a function that is includes the previous passed params plus the new params. The new function should contain a recursive call to curry()."
            ],
            "solution": null,
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            "sampleTestCase": "function sum(a, b, c) { return a + b + c; }\n[[1],[2],[3]]",
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