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Leetcode 1603. Design Parking System

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題目

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Input
["ParkingSystem", "addCar", "addCar", "addCar", "addCar"]
[[1, 1, 0], [1], [2], [3], [1]]
Output
[null, true, true, false, false]

解法思維

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var ParkingSystem = function(big, medium, small) {
    this.big=big
    this.medium=medium
    this.small=small
};

ParkingSystem.prototype.addCar = function(carType) {
    if(carType==1){
        this.big-=1
        return this.big>=0
    }else if(carType==2){
        this.medium-=1
        return this.medium>=0
    }else if(carType==3){
        this.small-=1
        return this.small>=0
    }
    }
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var ParkingSystem = function(big, medium, small) {
    this.remainingSpaces = [big, medium, small];
};
ParkingSystem.prototype.addCar = function(carType) {
    return (this.remainingSpaces[carType - 1]--) > 0
};