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Commit cc16cbd

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Added JugglerSequence.js (#1075)
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‎Maths/JugglerSequence.js

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/*
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* Juggler Sequence: https://en.wikipedia.org/wiki/Juggler_sequence
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* function jugglerSequence
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* Juggler Sequence is a series of integer number in which the first term starts with a positive integer number n
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* and the remaining terms are generated from the immediate previous term using the recurrence relation
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* Produce Juggler Sequence using number n as the first term of the sequence and store in an array
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* Reference: https://www.geeksforgeeks.org/juggler-sequence/
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* jugglerSequence(3) // returns [3, 5, 11, 36, 6, 2, 1 ]
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* jugglerSequence(9) // returns [9, 27, 140, 11, 36, 6, 2, 1]
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* jugglerSequence(15) // returns [15, 58, 7, 18, 4, 2, 1]
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*/
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function jugglerSequence (n) {
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const sequence = []
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sequence.push(n)
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// Calculate terms until last term is not 1
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while (n !== 1) {
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n = Math.floor(n ** ((n % 2) + 0.5))
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sequence.push(n)
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}
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return sequence
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}
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export { jugglerSequence }

‎Maths/test/JugglerSequence.test.js

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import { jugglerSequence } from '../JugglerSequence'
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describe('Testing jugglerSequence function', () => {
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it('should return [3, 5, 11, 36, 6, 2, 1 ] if the number is 3', () => {
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expect(jugglerSequence(3)).toEqual(
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expect.arrayContaining([3, 5, 11, 36, 6, 2, 1])
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)
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})
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it('should return [9, 27, 140, 11, 36, 6, 2, 1] if the number is 9', () => {
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expect(jugglerSequence(9)).toEqual(
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expect.arrayContaining([9, 27, 140, 11, 36, 6, 2, 1])
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)
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})
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it('should return [15, 58, 7, 18, 4, 2, 1] if the number is 15', () => {
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expect(jugglerSequence(15)).toEqual(
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expect.arrayContaining([15, 58, 7, 18, 4, 2, 1])
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)
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})
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})

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