2695. 包装数组
创建一个名为 ArrayWrapper 的类，它在其构造函数中接受一个整数数组作为参数。该类应具有以下两个特性：
+ 运算符将两个该类的实例相加时，结果值为两个数组中所有元素的总和。String() 函数时，它将返回一个由逗号分隔的括在方括号中的字符串。例如，[1,2,3] 。
示例 1：
输入：nums = [[1,2],[3,4]], operation = "Add" 输出：10 解释： const obj1 = new ArrayWrapper([1,2]); const obj2 = new ArrayWrapper([3,4]); obj1 + obj2; // 10
示例 2：
输入：nums = [[23,98,42,70]], operation = "String" 输出："[23,98,42,70]" 解释： const obj = new ArrayWrapper([23,98,42,70]); String(obj); // "[23,98,42,70]"
示例 3：
输入：nums = [[],[]], operation = "Add" 输出：0 解释： const obj1 = new ArrayWrapper([]); const obj2 = new ArrayWrapper([]); obj1 + obj2; // 0
提示：
0 <= nums.length <= 10000 <= nums[i] <= 1000注意：nums 是传递给构造函数的数组。原站题解
typescript 解法, 执行用时: 60 ms, 内存消耗: 44.2 MB, 提交时间: 2023-05-22 14:23:57
class ArrayWrapper {
private _nums: number[]
constructor(nums: number[]) {
this._nums = nums
}
valueOf() {
return this._nums.reduce((sum, cur) => sum + cur, 0)
}
toString() {
return `[${this._nums}]`;
}
};
/**
* const obj1 = new ArrayWrapper([1,2]);
* const obj2 = new ArrayWrapper([3,4]);
* obj1 + obj2; // 10
* String(obj1); // "[1,2]"
* String(obj2); // "[3,4]"
*/
javascript 解法, 执行用时: 48 ms, 内存消耗: 41.3 MB, 提交时间: 2023-05-22 14:23:39
/**
* @param {number[]} nums
*/
var ArrayWrapper = function (nums) {
this.values = nums
};
ArrayWrapper.prototype.valueOf = function () {
return this.values.reduce((pre, cur) => pre + cur, 0)
}
ArrayWrapper.prototype.toString = function () {
return '[' + this.values + ']'
}
/**
* const obj1 = new ArrayWrapper([1,2]);
* const obj2 = new ArrayWrapper([3,4]);
* obj1 + obj2; // 10
* String(obj1); // "[1,2]"
* String(obj2); // "[3,4]"
*/
javascript 解法, 执行用时: 68 ms, 内存消耗: 41.7 MB, 提交时间: 2023-05-22 14:23:16
/**
* @param {number[]} nums
*/
var ArrayWrapper = function(nums) {
this.a = nums
};
ArrayWrapper.prototype.valueOf = function() {
return this.a.reduce((a,b) => a + b, 0)
}
ArrayWrapper.prototype.toString = function() {
return `[${this.a.join()}]`
}
/**
* const obj1 = new ArrayWrapper([1,2]);
* const obj2 = new ArrayWrapper([3,4]);
* obj1 + obj2; // 10
* String(obj1); // "[1,2]"
* String(obj2); // "[3,4]"
*/