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Commit bab817d

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Create 3592-inverse-coin-change.js
1 parent a52820c commit bab817d

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‎3592-inverse-coin-change.js

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/**
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* @param {number[]} numWays
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* @return {number[]}
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*/
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var findCoins = function (numWays) {
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const n = numWays.length
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const dp = new Array(n + 1).fill(0)
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dp[0] = 1
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const res = []
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for (let coin = 1; coin <= n; coin++) {
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const temp = dp.slice()
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let valid = true
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let changed = false
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for (let i = coin; i <= n; i++) {
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temp[i] += temp[i - coin]
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if (temp[i] > numWays[i - 1]) {
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valid = false
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break
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}
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if (temp[i] !== dp[i]) {
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changed = true
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}
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}
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if (valid && changed) {
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res.push(coin)
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for (let j = 0; j <= n; j++) {
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dp[j] = temp[j]
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}
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}
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}
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for (let i = 1; i <= n; i++) {
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if (dp[i] !== numWays[i - 1]) {
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return []
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}
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}
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return res
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}

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