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30 lines
510 B
JavaScript
30 lines
510 B
JavaScript
/**
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* @param {number[]} nums
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*/
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var ArrayWrapper = function(nums) {
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this.nums = nums;
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return this;
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};
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ArrayWrapper.prototype.valueOf = function() {
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let sum = 0;
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for (let x of this.nums) {
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sum += x;
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}
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return sum;
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}
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ArrayWrapper.prototype.toString = function() {
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return `[${this.nums.join(',')}]`;
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}
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/**
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* const obj1 = new ArrayWrapper([1,2]);
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* const obj2 = new ArrayWrapper([3,4]);
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* obj1 + obj2; // 10
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* String(obj1); // "[1,2]"
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* String(obj2); // "[3,4]"
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*/
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