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Copy pathDesign an ATM Machine.js
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Design an ATM Machine.js
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// Runtime: 617 ms (Top 12.20%) | Memory: 63.7 MB (Top 39.02%)
var ATM = function() {
this.bankNotes = new Array(5).fill(0)
this.banksNotesValue = [20, 50, 100, 200, 500]
};
/**
* @param {number[]} banknotesCount
* @return {void}
*/
ATM.prototype.deposit = function(banknotesCount) {
for (let i = 0; i < 5; i++) {
this.bankNotes[i] += banknotesCount[i]
}
return this.bankNotes
};
/**
* @param {number} amount
* @return {number[]}
*/
ATM.prototype.withdraw = function(amount) {
let remain = amount
let usedBankNotes = new Array(5).fill(0)
let temp = [...this.bankNotes]
for (let i = 4; i >= 0; i--) {
if (temp[i] > 0 && remain >= this.banksNotesValue[i]) {
const bankNote = Math.floor(remain / this.banksNotesValue[i])
const maxCanUse = Math.min(temp[i], bankNote)
usedBankNotes[i] = maxCanUse
temp[i] -= maxCanUse
remain -= maxCanUse * this.banksNotesValue[i]
}
}
if (remain > 0) {
return [-1]
} else {
this.bankNotes = temp
return usedBankNotes
}
};
/**
* Your ATM object will be instantiated and called as such:
* var obj = new ATM()
* obj.deposit(banknotesCount)
* var param_2 = obj.withdraw(amount)
*/