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Merged
raklaptudirm merged 3 commits into from
Oct 20, 2021
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Merged

Create RodCutting.js #776

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0312ee7
Create RodCutting.js
raghhavtaneja Oct 11, 2021
0ae960c
added tests for rodCutting and made some changes
raghhavtaneja Oct 12, 2021
5210273
resolved style issues in the code
raghhavtaneja Oct 12, 2021
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17 changes: 17 additions & 0 deletions Dynamic-Programming/RodCutting.js
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Original file line number Diff line number Diff line change
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/*
* You are given a rod of 'n' length and an array of prices associated with all the lengths less than 'n'.
* Find the maximum profit possible by cutting the rod and selling the pieces.
*/

export function rodCut (prices, n) {
const memo = new Array(n + 1)
memo[0] = 0

for (let i = 1; i <= n; i++) {
let maxVal = Number.MIN_VALUE
for (let j = 0; j < i; j++) { maxVal = Math.max(maxVal, prices[j] + memo[i - j - 1]) }
memo[i] = maxVal
}

return memo[n]
}
21 changes: 21 additions & 0 deletions Dynamic-Programming/tests/RodCutting.test.js
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import { rodCut } from '../RodCutting'

test('Test Case 1', () => {
expect(rodCut([1, 5, 8, 9, 10, 17, 17, 20], 8)).toBe(22)
})

test('Test Case 2', () => {
expect(rodCut([1, 5, 4, 2, 1, 11, 19, 12], 8)).toBe(20)
})

test('Test Case 3', () => {
expect(rodCut([1, 2, 1], 3)).toBe(3)
})

test('Test Case 4', () => {
expect(rodCut([5, 4, 3, 2, 1], 5)).toBe(25)
})

test('Test Case 5', () => {
expect(rodCut([3, 5, 8, 8, 10, 16, 14, 19], 8)).toBe(24)
})