Add recursive factorial function (#85)
* Fix LinkedList * Fix the prepend method for the LinkedList * Fix the remove method for the MinHeap * Correct a comment * Fix BST removal method * Fix the findEdge method of the graph * Fix the value returned by DisjointSet union * Add recursive factorial function
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import factorialRecursive from '../factorialRecursive';
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describe('factorialRecursive', () => {
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it('should calculate factorial', () => {
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expect(factorialRecursive(0)).toBe(1);
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expect(factorialRecursive(1)).toBe(1);
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expect(factorialRecursive(5)).toBe(120);
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expect(factorialRecursive(8)).toBe(40320);
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expect(factorialRecursive(10)).toBe(3628800);
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});
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});
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src/algorithms/math/factorial/factorialRecursive.js
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src/algorithms/math/factorial/factorialRecursive.js
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/**
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* @param {number} number
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* @return {number}
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*/
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export default function factorialRecursive(number) {
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return number > 1 ? number * factorialRecursive(number - 1) : 1;
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}
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